Finished projects

International

Syntesis and characterization of novel organic-inorganic polymeric hybrids for 3D printing
Príprava a charakterizácia pokročilých anorganicko-organických polymérnych hybridov pre 3D tlač
Program:	Inter-academic agreement
Project leader:	Ing. Bureš Radovan, CSc.
Annotation:	Three-dimensional printing is currently largely bound to the use of polymer materials supplied bythe printer manufacturer. This, however, greatly limits the wider application of 3D printing of objects with specific physicochemical and mechanical properties. The primary reason of this limitation is the requirement for biocompatibility, biodegradability, enhancement of anti-corrosion properties, or specific requirements for the mechanical and electrical properties of the resulting products. Consequently, the objective of this project is the synthesis and characterization of novel advancedpolymer composites with inorganic fillers applicable in 3D printing. The aim will be to examine the influence of the size and shape distribution of inorganic fillers on thestructure and physicochemical properties of the newly formulated composites. Increased attentionwill be paid to modifying the macromolecular structure and microstructure at the interface between the organic and inorganic phases and unveiling the induced changes in the macroscopic properties of the infiltrated hybrid materials.
Duration:	1.1.2018 – 31.12.2021

Progressisve methods for treatment of the functional and mechanical properties of powder materials
Progresívne metódy úpravy funkčných a mechanických vlastností práškových materiálov
Program:	Inter-academic agreement
Project leader:	RNDr. Kovaľ Vladimír, DrSc.
Annotation:	Rapidly solidified powder alloys as well as mechanically prepared powder metal alloys have a limited plastic deformation capability. Limited plasticity of the powders leads to their limited form-ability and in some cases prevents compacting of the powder by uniaxial cold pressing. Structural defects typical for mechanically synthesized alloys also cause deterioration of their electrical and magnetic properties. The aim of the project is to investigate the progressive processing methods of mechanically prepared powder alloys in order to improve their compaction, while maintaining or improving their electrical, magnetic and mechanical properties. The project solution can bring original findings, leading to expansion of the usability of fast-solidified and mechanically synthesized alloy powder materials in industry.
Duration:	1.1.2018 – 31.12.2021

WȔRTH – Preparation of soft magnetic composites for infustrial application
Príprava magneticky mäkkých kompozitov pre priemysel
Program:	Bilateral – other
Project leader:	RNDr. Strečková Magdaléna, PhD.
Annotation:	The project focuses on the preparation of soft magnetic composites based on ferromagnetic material and modified polymers. The soft magnetic composite material will be potentialy used for the preparation of miniaturized high temperature templates.
Duration:	1.9.2017 – 31.8.2020

Compaction of soft magnetic powder materials with limited plastic deformation ability
Kompaktizácia magneticky mäkkých práškových materiálov s obmedzenou schopnosťou plastickej deformácie
Program:	Inter-academic agreement
Project leader:	Ing. Bureš Radovan, CSc.
Annotation:	Goal of the project is to investigate the progressive compaction methods to achieve high density and low defectiveness of the structure of soft magnetic materials based on powder FeSi and High entropy alloys. Research is focused on the clarification of densification mechanism in powder soft magnetic materials. Mechanical and magnetic properties of compacted materials will be correlated with parameters of compaction technology. This knowledge will contribute to application of progressive magnetic alloy in technical practice mainly in the field of green energy and transportation industry.
Duration:	1.1.2018 – 31.12.2019

MagElMat – Development of novel multifunctional materials for next generation magnetoelectric sensors and data storage devices
Vývoj nových multifunkčných materiálov pre magnetoelektrické senzory a úložiska digitálnych dát budúcej generácie
Program:	Bilateral – other
Project leader:	RNDr. Kovaľ Vladimír, DrSc.
Annotation:	The main goal of the proposed project is to establish and develop a scientific cooperationbetween Slovakia and China in the field of multifunctional materials for advanced applications inmicroelectronics and spintronics. Joining of the research teams from both countries is motivatednot only because of great technological potential of multifunctional materials but also due to thefascinating physics behind their unique properties. Multiferroics, exhibiting simultaneouslyferroelectric and magnetic properties, are among the most attractive multifunctional materials.They allow for controlling the magnetic state of multifunctional devices with an external electric field, and vice versa. The main obstacle is, however, the scarcity of multifunctionalmagnetoelectrics in nature. Currently, single-phase multiferroics are far beyond any practicalapplication, because they only demonstrate useful properties at very low temperatures.Recently, we showed that Aurivillius-type ferroelectrics doped by magnetic atoms can exhibitmultiferroic behavior at room temperature. The origin of magnetism and magnetoelectriccoupling in these materials, however, still needs a proper interpretation and confirmation fromdetailed experimental and theoretical studies. Our aim is to combine research on multiferroicmaterials in Slovakia with activities in China on theoretical modelling of multiferroics to designand prepare single-phase materials with the improved magnetoelectric property at roomtemperature.
Duration:	1.1.2018 – 31.12.2019

Structural PM steels containing alloying elements with high affinity for oxygen sintered in atmosphere with different chemical composition
Konštrukčné PM ocele obsahujúce legujúce prvky s vysokou afinitou ku kyslíku spekané v atmosférach s rôznym chemickým zložením
Program:	Inter-academic agreement
Project leader:	RNDr. Kupková Miriam, CSc.
Duration:	1.1.2016 – 31.12.2018

Functional composites based on elastomer matrix and inorganic filler
Funkčné kompozity na báze elastomérnej matrice a anorganických plnív
Program:	Inter-academic agreement
Project leader:	Ing. Bureš Radovan, CSc.
Annotation:	Advanced functional materials combining required mechanical and electro-magnetic properties currently represent a promising approach in development of new types of sensors. The primary aim of the proposed joint project is formulation of novel functional composites based on elastomer matrix modified by nano-particle fillers. To obtain materials with a broad range of physicochemical properties the polymer matrix, for instance polyurethane based on polybutadiene blocks, will be modified by different types and amounts of metallic nano-particles. Indispensable part of the proposed project is detailed structural and physicochemical characterization of the prepared composite systems. For such task specific correlations between mechanical and electrical properties and the chemical composition of the prepared systems will be primarily studied. Molecular structure will be probed by FTIR and ssNMR techniques while surface morphology will be determined using advanced microscopy. Successful solution of the proposed project requires extensive knowledge transfer between both working groups.
Duration:	1.1.2016 – 31.12.2017

Preparation and characterization of soft magnetic high entropy alloys
Príprava a charakterizácia magneticky mäkkých zliatin s vysokou entropiou
Program:	Inter-academic agreement
Project leader:	RNDr. Strečková Magdaléna, PhD.
Annotation:	The project will be focused on preparation of soft magnetic alloys materials high energy milling of Fe and Ni with addition of glassy phase stabilizer and with addition of elements supporting nanocrystallization process. Main goal of the project is preparation and haracterization of nanocrystalline or partially amorphous alloys. Task of Czech research team will be echanochemicalpreparation of powder nano-crystalline material. XRD and SEM-EBSD methods will be used forcharacterization and optimization of mechanical milling process. Technology parameters andconditions of preparation of studied nano-crystalline alloys will be defined. Task of Slovak research team is analyses of powder morphology and particle size distribution of prepared powder alloys. Analysis of compressibility, shaping and compaction of selected powders to sample body for electric, magnetic and mechanical tests. Correlation analyse of measured characteristics will beused to obtain the information, which will be important for potential application of studied alloys in technical practice.
Duration:	1.1.2015 – 31.12.2017

The investigation of structural steels sintered in atmosphere with different chemical composition
Výskum konštrukčných ocelí spekaných v atmosférach rôzneho chemického zloženia
Program:	Bilateral – other
Project leader:	RNDr. Kupková Miriam, CSc.
Duration:	1.8.2013 – 31.12.2015

COST MP1005 – Porous composite biomaterial substrates biopolymer-calcium phosphate type for regenerative medicine
Pórovité kompozitné biomateriálové substráty typu biopolymér-kalcium fosfát pre regeneratívnu medicínu
Program:	COST
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Duration:	30.3.2012 – 30.3.2015

SIMUFER – Ferroelectrics and magnetoelectric multiferroics
Feroelektrické a magnetoelektrické materiály
Program:	COST
Project leader:	RNDr. Kovaľ Vladimír, DrSc.
Annotation:	The goal of the Action is to build a high level European scientific knowledge platform in the field of single and multiphase nanoscale ferroic and multiferroic oxides with restricted geometries, in which new properties are driven by engineering size, shape and interface-mediated phenomena.
Project webpage:	http://stoner.phys.uaic.ro/cost/
Duration:	13.1.2010 – 31.5.2014

Calcium phosphate based biomaterials utilized in medicine
Kalcium fosfátové biomateriály využiteľné v lekárstve
Program:	Inter-academic agreement
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Duration:	17.12.2009 – 16.12.2012

NCM – Composites with Novel Functional and Structural Properties by Nanoscale Materials (Nano Composite Materials-NCM)
Kompozity s novými funkčnými a štruktúrnymi vlastnosťami prostredníctvom nanomateriálov
Program:	COST
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Duration:	1.1.2008 – 31.3.2012

Innovative Calcium Phosphate based Materials for Medicine
Inovatívne materiály na báze kalcium fosfátov pre medicínu
Program:	Inter-academic agreement
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Duration:	1.9.2006 – 30.9.2009

ELENA – Structure-property Relationship Study in Advanced Nanostructured Electroceramic Materials
Štúdium vzájomného vzťahu medzi mikroštruktúrou a vlastnosťami v progresívnych elektrokeramických materiáloch pripravených z nanopráškov
Program:	COST
Project leader:	RNDr. Kovaľ Vladimír, DrSc.
Annotation:	no description
Project webpage:	www.cost539.cms-bg.net
Duration:	27.5.2005 – 22.6.2009

PROSURFMET – Modifications of Surfacing PM Tool Steels
Modifikácie povrchových úptav PM nástrojových ocelí
Program:	EUREKA
Project leader:	Ing. Jakubéczyová Dagmar, CSc.
Annotation:	Improvement of industrial properties of P/M cutting steels by the method of surface treatment of the functional surface (PVD-technologies, duplex coating with plasma nitrided layer as a "support layer" for additional PVD-methods). Realization of surface treatment of PM cutting and forming tools (Vanadis 4, 6, K190). Determination of suitable parameters of thermal deposition processes from the point of view of the coat/surface system behaviour under concrete conditions of loading. Evaluation of microstructure by light and scanning electron microscopy, in close association with image analysis (IA) oriented on surface characteristics (microhardness, adhesion, resistance to wear. Testing of tools under industrial conditions and microstructural analysis after their use.
Project webpage:	www.eureka.be
Duration:	1.1.2005 – 31.12.2007

Sintered iron-based alloys with microgradient structure
Spekané zliatiny na báze železa s mikrogradientnou štruktúrou
Program:	Inter-governmental agreement
Project leader:	RNDr. Kupková Miriam, CSc.
Annotation:	no description
Duration:	1.1.2006 – 31.12.2007

Switching and subswitching properties of ferroelectrics under mechanical load
Charakterizácia ferolektrík pri mechanickom a elektrickom namáhaní
Program:	Bilateral – other
Project leader:	RNDr. Kovaľ Vladimír, DrSc.
Annotation:	The objective of the proposed research is to investigate and develop current understanding of the ferroelectric and ferroelastic subcoercive behavior and switching processes in ferroelectric ceramics and thin films subjected to a combined electro-mechanical loading.
Duration:	16.1.2007 – 15.7.2007

POLECER – Polar Electroceramics
Polárna elektrokeramika
Program:	FP5
Project leader:	RNDr. Kovaľ Vladimír, DrSc.
Annotation:	no description
Project webpage:	www.polecer.rwth-aachen.de
Duration:	1.4.2002 – 31.3.2007

Electromechanical characterisation of ferroelectric thin films using nanoindentation
Elektromechanická charakterizácia tenkých feroelektrických filmov s využitím nanoindentácie
Program:	FP5
Project leader:	RNDr. Kovaľ Vladimír, DrSc.
Annotation:	The overall objective of the project is a characterisation of the electromechanical response of ferroelectric thin films by using nanoindentation techniques. The force, displacements and charge transients signals will be used to study the elastic, plastic, ferroelastic and electromechanical propertiesof the films.
Duration:	3.3.2003 – 2.3.2005

UPLETOOLS – Upgrading of ledeburitic type P/M tool steels
Povrchová úprava ledeburitických PM nástrojových ocelí
Program:	EUREKA
Project leader:	Ing. Jakubéczyová Dagmar, CSc.
Annotation:	The aim of the project is to increase both the surface hardness and the wear resistence, in order to achieve the prolonging of the service time of cutting tools made from the PM high speed steels. The prolonging of the manufacture qualities will be achieved mainly by the plasma nitriding and PVD-coating. The experimental efforts are closely connected with those solved within the frame of the EUREKA E!2060 SURTELEM-project.Within this project,the PM made Vanadis30 – type high speed steel (HSS) has been investigated.Obtained know-how is assimed to be applied to the investigation of the newly developed cobalt containing PM HSS with an unusual chemical composition.
Duration:	1.1.2002 – 31.12.2004

SURTELEM – Surfacing Techniques for Advanced Ledeburitic Steel and Hard Materials
Metódy povrchových úprav pre progresívne ledeburitické ocele a tvrdé materiály
Program:	EUREKA
Project leader:	Ing. Jakubéczyová Dagmar, CSc.
Duration:	1.1.1999 – 31.12.2001

Co-operation for microstructural Characterization and Electrophysical Properties Measurements of Piezoelectric Ceramics
Spolupráca pri mikroštruktúrnej charakterizácii a meraniach elektrofyzikálnych vlastností piezoelektrickej keramiky
Program:	Inter-academic agreement
Project leader:	RNDr. Kovaľ Vladimír, DrSc.
Annotation:	The objective of the project is the development of novel piezoelectric ceramic materials based on the lead zirconate titanate system (PZT), currently used in many electromechanical applications, through the incorporation of multicomponents. In order to improve the dielectric and piezoelectric properties of these systems, special attention will be paid to the study of the relationship between the chemical composition and the electrical response of the obtained ceramics, as well as to the existing relationship between the microstructure and the dielectric behaviour of samples upon introducing modifications in the poling processes.
Duration:	13.2.1998 – 12.2.2001

National

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Fosfidy prechodných kovov pre elektrolytický rozklad vody
Program:	DoktoGranty
Project leader:	Ing. Bera Cyril
Duration:	1.1.2023 – 31.12.2023

Composite systems based on bioelastomers and bioactive phases
Kompozitné systémy na báze bioelastomérov a bioaktívnych fáz
Program:	VEGA
Project leader:	RNDr. Sopčák Tibor, PhD.
Annotation:	As the population continues to grow, so does the number of surgeries in various fields of medicine, including reconstructive surgery and regenerative medicine. This implies a need for a research of such biomaterials that will closely mimic the structure of the original tissue. The present project will aim to address the issues related to the currently used bone implants, i.e. low mechanical properties with the simultaneous maintenance of their biological properties. The production of composite systems based on bioelastomers and bioactive phases in the form of bioceramics or cements is expected to take advantage of both components with the outstanding bioactivity, self-setting and handling properties of cements along with excellent elastic properties, mechanical reinforcement and improved biodegradation offered by elastomers. A great emphasis will be given on the production of glycerol carboxylate polyesters and their effective incorporation into the bioactive matrix.
Duration:	1.1.2021 – 31.12.2023

Preparation of hybrid composites and characterization of structure and magnetic properties at a wider temperature range
Príprava hybridných kompozitných materiálov a charakterizácia štruktúry a magnetických vlastností v širšom intervale teplôt
Program:	VEGA
Project leader:	RNDr. Birčáková Zuzana, PhD.
Annotation:	The project is focused on the preparation of new progressive composites, on the research of the structure and magnetic properties of materials composed of ferromagnetic, ferrimagnetic and insulating components. The resulting solid composite material will be formed by compression. The research will focus on explaining the influence of ferromagnetic and ferrimagnetic magnetic structure of composites and magnetic interactions on electromagnetic properties under different physical conditions. The aim is to determine the relationships between magnetic parameters, particle size, thickness of ferromagnetic and other insulating coatings and to prepare a hybrid composite material with verygood magnetic properties. The research results have the ambition to expand the application potential of composite materials for electrical engineering.
Duration:	1.1.2020 – 31.12.2023

Solid ionic conductors: preparation, properties and potential application in all-solid-state lithium batteries.
Tuhé iónové vodiče: výroba, vlastnosti, perspektíva využitia v lítiových batériách s tuhým elektrolytom.
Program:	VEGA
Project leader:	RNDr. Kupková Miriam, CSc.
Duration:	1.1.2021 – 31.12.2023

Influence of microwave radiation on the structure and properties of powder functional materials
Vplyv mikrovlnného žiarenia na štruktúru a vlastnosti práškových funkčných materiálov
Program:	VEGA
Project leader:	Ing. Bureš Radovan, CSc.
Annotation:	The subject of research is the interaction of MW radiation with functional powder materials with specific electrical and magnetic properties, especially soft magnetic composites (SMC). The aim of the project is to contribute to the explanation of the mechanisms of densification of the MW processed structure of powder composites based on the primary ferromagnetic component and the secondary dielectric component distributed in the volume of the composite as a network. The structural characteristics will be correlated with the electromagnetic and mechanical properties of MW sintered materials in order to contribute to the explanation of changes in the functional properties induced by the interaction of MW radiation with ferromagnets and dielectrics. It is assumed that fundamental knowledge about the relations of process parameters, structure and physical properties will contribute to the application possibilities of MW PM processing. The contribution can also be expected in the field of structural design of SMC.
Duration:	1.1.2021 – 31.12.2023

FEGAFAB – Development of technology for the manufacture of FeGa-based alloys for high-frequency devices.
Development of technology for the manufacture of FeGa-based alloys for high-frequency devices.
Program:	MoRePro
Project leader:	Ing. Milyutin Vasily, PhD
Annotation:	The iron-gallium alloy has the great prospect of widespread use in industry, as a material for the production of modern smart systems, including those operating at elevated temperatures, mechanical loads, and high frequency magnetization fields. This is due to the number of unique functional characteristics, namely, large tetragonal magnetostriction in small magnetic fields, weak hysteresis, high Curie temperature and weak dependence of properties on temperature, moreover, this alloy has relatively good mechanical properties, which makes it possible to produce thin sheets from it for use in high-frequency devices, such as ultrasound transducers and dispersants. For this purpose, it is necessary to create a given crystallographic texture and microstructure by selecting the optimal modes of rolling and annealing, which is impossible without comprehensive studies of the patterns of structural evolution in this alloy. Despite the good mechanical properties compared to, for example, Terfenol-D, the problem of FeGa double alloy is low plasticity, which can lead to cracking during rolling, which makes it difficult to manufacture sheets of this alloy in industrial conditions. The first way to solve this problem in the project is small additions of alloying elements, which lead to a significant increase in plasticity. We will study the processes of structure and crystallographic texture formation in double and doped alloys, their correlation with the modes of thermomechanical processing, the establishment of the physical causes of such a correlation. The second way is use of new achievements of powder metallurgy for FeGa compaction. This will significantly reduce magnetic loses without the need for thin sheet, but at the same time reduce magnetostriction, our task is find a balance. The purpouse of the project is comprehensive study of the structure formation processes in the FeGa alloy under different conditions and the development of optimal fabrication regimes.
Duration:	15.10.2020 – 14.10.2023

Design surface topography tools from the WC-Co applied PVD coating
Dizajn topografie povrchov nástrojov z WC-Co s aplikovanými PVD povlakmi
Program:	VEGA
Project leader:	Ing. Jakubéczyová Dagmar, CSc.
Annotation:	The aim of the project is to solve the partial role of the optimization process of Ni-super alloys used in the aircraft industry, specifically in jet engines. In the machining of Ni-superalloys, a high thermal and mechanical load occurs in the active area of the tool, reducing its lifetime and decreasing production efficiency. The challenge is the design and experimental verification of the new surface texture design of the active parts of the machining tool from WC-Co, the laser pre-treatment technology and the PVD coating of the 4th generation. Surface topography of the active part of the instrument will be modified by impulse laser radiation with controlled energy density and controlled area distribution of the heat exposed areas. The resulting surface of the active part of the tool will contain microcraters at the desired depth profile positions. The output will be an innovated texture of the tool surface in order to make machining of special nickel superalloys more effective – Inconel 713, resp. 718.
Duration:	1.1.2020 – 31.12.2022

Innovative approaches to research and development of novel ferroic materials by using complex impedance spectroscopy
Inovatívne postupy vo výskume a vývoji nových feroických materiálov s využitím komplexnej impedančnej spektroskopie
Program:	VEGA
Project leader:	RNDr. Kovaľ Vladimír, DrSc.
Annotation:	Ferroelectric and multiferroic (e.g., magnetoelectric) materials have received extensive attention in the last few decades, primarily because of their numerous potential applications in microelectronics and spintronics. Ferroic ceramics, however, suffer usually from high losses, leakage currents and low polarization (ferroelectric and/or magnetic) due to grain boundary effects and interfacial polarization phenomena. These microstructural featuresimpede largely commercial viability of electro-active ceramics. The main goal of the proposed project is to employ the AC complex impedance technique for probing the electrical properties of functional ceramics and reveal the correlation between the microstructural features and conductivity phenomena in grain boundary and/or interfacial layer dominated materials. Understanding the structure-property relationship would allow designing novel (multi-) functional materials with improved dielectric and (multi-) ferroic properties.
Duration:	1.1.2020 – 31.12.2022

Composite magnesium-calcium phosphate biocements with addition of colloidal silicon dioxide
Kompozitné horčíkovo-vápenato fosforečné biocementy s prídavkom koloidného oxidu kremičitého
Program:	VEGA
Project leader:	Ing. Štulajterová Radoslava, PhD.
Annotation:	The project is focused on the research and development of composite calcium phosphate biocements containing magnesium and colloidal silica particles, which represents an improvement in particular, in the viscositycharacteristics of cement pastes. The intention is that the addition of colloidal SiO2 will contribute to a fastertransformation of calcium phosphate biocement to calcium deficient hydroxyapatite and change or improving the biocement characteristics, which are important in bone reconstruction. Resulting biocement system should haveenhanced mechanical strength that would be sustained over a longer time period during soaking in body fluids and should positively affect bioresorption with an active influence on specific cell lineages.
Duration:	1.1.2020 – 31.12.2022

Preparation and characterization of porous EuTbGd-MOF thin films for luminescent sensors.
Príprava a charakterizácia pórovitých EuTbGd-MOF tenkých filmov pre luminiscenčné senzory.
Program:	VEGA
Project leader:	RNDr. Bruncková Helena, PhD.
Annotation:	The project is focused on research of structure of porous metal-organic frameworks (MOFs) based onlanthanides (Ln = Eu, Tb, Gd) in the form of hybrid nanomaterials assembled from Ln3+ ions and organic ligands.Nanocrystalline thin films will be prepared individually with europium, therbium, gadolinium and mixedEuxTbyGdz-MOF system by solvothermal method from precursors deposited on silicon substrates byspin-coating method. Determination of concentration effect of acetate agent as modulator in reducing particle sizeof 3D structure will help to clarify the mechanism of phase transformations occurring in films in the heatingprocess. In addition, the project is focused on characterization of luminescent properties. Eu3+, Tb3+ and Gd3+phosphors emitting red, green and blue light will be incorporated into resulting framework capable of generatingwhite light. The results could help to contribute the knowledge about porous films in terms of their possibleapplication as sensors in the electrotechnical industry.
Duration:	1.1.2020 – 31.12.2022

Development of electrode materials based carbon fibers doped with metal phosphides for electrocatalysis of hydrogen evolution reaction.
Vývoj elektródového materiálu na báze uhlíkových vlákien dopovaných fosfidmi kovov pre elektrokatalýzu vodíka.
Program:	VEGA
Project leader:	RNDr. Strečková Magdaléna, PhD.
Annotation:	Hydrogen produced from renewable energy sources is considered to be a fuel of the future that has the potentialto reduce the energy dependence of developed countries on oil imports and to improve the quality of human life.Hydrogen produced from electrolysis of water could be a sustainable source of energy. However the simple,efficient, and secure methods of hydrogen retrieval must be developed before it can be recognized as aneconomically significant resource with an exceptional energy potential. The project is devoted to the preparationof new catalysts for the effective hydrogen evolution from water. The porous carbon fibers modified with metallicnanoparticles and metallic phosphide nanoparticles will be prepared by needle-less elektrospinning technologyfrom the free surface of polymers, to catalyze the production of hydrogen at low overpotential.The outcomes ofthe project will be design of a compact electrode composed of modified carbon fibers that would effectivelycatalyse hydrogen evolution.
Duration:	1.1.2020 – 31.12.2022

EDEVIR – Electrochemical detection of viruses
Elektrochemická detekcia vírusov
Program:	SRDA
Project leader:	RNDr. Strečková Magdaléna, PhD.
Annotation:	Currently, rapid diagnosis of the SARS-CoV-2 virus presence is limited by the inability to perform bed side PCR,while other assays that detect viral antigens are associated with low sensitivity and specificity. Fast and accuratediagnosis is limiting for quick patient identification, assessment of his contacts and timely epidemiologicalintervention. Affordability is also a condition for quick diagnostics. Therefore, the present project deals with basicresearch aimed at the development of an electrochemical sensor that is able to efficiently and quickly detect thepresence of the virus in biological fluids. Our goal is to study suitable electrode materials for the electrochemicalsensors development that would be able not only qualitatively but also quantitatively to determine the amount ofvirus particles in a sample. The use of these sensors will ensure fast detection (bed side test), low consumption ofmaterials needed for detection, elimination of the use of instrumental and time-consuming methods, allow patientsto self-test, which will ultimately reduce the overall consumption of personal protective equipment.The study of electrochemical sensors for virus detection will bring new knowledge about the preparation ofelectrode materials with a specific composition and morphology. One of the main benefits will be developed.
Duration:	16.9.2020 – 31.12.2021

VIFKDBB – Research of innovative forms treatment of bone defects by joining bioactive biomaterials and autologous growth factors
Výskum inovatívnych foriem liečenia kostných defektov prepojením bioaktívnych biomateriálov s autológnymi rastovými faktormi
Program:	Vedecko-technické projekty
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Duration:	15.12.2018 – 14.12.2021

INJEHYB – Injectable hybrid composite biocements
Injektovateľné hybridné kompozitné biocementy
Program:	SRDA
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Annotation:	Project is focused on synthesis, preparation and characterization of modified and novel types of injectable hybridbiocements with high bioactivity, structure and chemical biocompatibility with required properties for medicalapplications. Above biomaterials will have widely utilization in orthopeadics (therapy of bone defects andfractures, stabilization of endoprosthesis etc.), for reconstruction of bone injuries in maxillofacial region and like bioactive adhezive cements in dentistry.
Duration:	1.8.2018 – 30.6.2021

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Progresívne metódy prípravy modifikovaných uhlíkových vlákien pre efektívny vývoj vodíka
Program:	DoktoGranty
Project leader:	Mgr. Štelmáková Mária
Duration:	1.1.2020 – 30.6.2021

Nanomaterials and nanostructured layers with specific functionality
Nanomateriály a nanoštruktúrované vrstvy so špecifickou funkcionalitou
Program:	VEGA
Project leader:	RNDr. Kupková Miriam, CSc.
Duration:	1.1.2017 – 31.12.2020

SBIOMAT – Sintered biodegradable metallic materials
Spekané biologicky odbúrateľné kovové materiály
Program:	SRDA
Project leader:	RNDr. Kupková Miriam, CSc.
Duration:	1.7.2017 – 31.12.2020

Investigation of the progressive powder processing methods designated for fabrication of the soft magnetic composite
Výskum progresívnych metód úpravy práškových zliatin určených na prípravu magneticky mäkkých kompozitov
Program:	VEGA
Project leader:	Ing. Bureš Radovan, CSc.
Annotation:	Excellent powder soft magnetic materials are characterized by limited compressibility due to shape, size and plastic deformation ability. Compressibility is improved by pressing additives. Additives degrade the magnetic properties and resistivity of the soft magnetic composites. Aim of the project is investigation of the progressivemethods of powder alloy processing with focus on modification of powder particles and dielectric coating formation at their surface. Motivation of modifications are improvement of the compressibility, increase in resistivity of the powder alloy thus improvement of functional and mechanical properties of the composites. The project will contribute to evaluation of the physical and technical possibility to utilize the microwaves and high density electric field in modification of metallic powder. It could be expected preparation of the powder alloy ofwhich physical and technological properties will be suitable for the soft magnetic composites production or potentially 3D printing.
Duration:	1.1.2018 – 31.12.2020

Biomimetically hardened hydrogel/calcium phosphate cements
Biomimeticky vytvrdzované hydrogél/kalcium fosfátové cementy
Program:	VEGA
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Annotation:	The project is focused on research and development of hydrogel / calcium phosphate cements with optimized content of calcium and phosphate ions concentrated in hydrogels. This arrangement allows biomimetic precipitation of calcium phosphate nanoparticleswith specific ordering, which will affect the strength of the interface, microstructure and properties of cement composites. The objective of the project will be research and development of new method for creating of larger pores using resorbable macroporous particles added to the cement paste and analysis relation of characterstics of cement particles on the final cement properties. Final systems will mimic the composition of bone tissue and imitate the ossification processes of bone tissue formation via hydrogel component.
Duration:	1.1.2017 – 31.12.2019

MACOMA – Design of the structure and the functional properties of soft magnetic 3-d transitions metals based composites
Dizajn štruktúry a funkčných vlastností magneticky mäkkých kompozitných materiálov na báze 3-d prechodných kovov
Program:	SRDA
Project leader:	Ing. Bureš Radovan, CSc.
Annotation:	The project focuses on structure and functional properties design of 3-d transition metals based soft magnetic composite materials, in which will be carried out the experimental research of functional properties of advanced materials with heterogeneous structure consisting of isolated ferromagnetic particles. Magnetic micro- and nanocomposite systems will be prepared using advanced powder metallurgy method and current chemical processes. The research will be focused on explanation of the interface influence on the electric, magnetic and mechanical properties investigated magnetic composite materials. Expected results extend the potential for application of advanced soft magnetic materials suitable for use in a medium frequencies, where ferrites are currently used.
Duration:	1.7.2016 – 31.12.2019

Multifunctional Aurivillius-type magnetoelectrics for advanced data storage and sensor applications
Multifunkčné keramické materiály Aurivilliového typu pre pokročilé magnetoelektrické pamäťové zariadenia a senzory
Program:	VEGA
Project leader:	RNDr. Kovaľ Vladimír, DrSc.
Annotation:	The purpose of the proposed project is to design and prepare novel single-phase Aurivillius-type ceramic materials with improved multiferroic properties at and above room temperature. The research is motivated by the great potential of these materials for non-volatile data storage, transducers, sensors, and many other future device applications. Bismuth-layered structure ferroelectrics, doped on the A- and B- sites by magnetic cations, will be synthesized by solid-state reaction. An innovative method of microwave heating will be introduced along with conventional sintering in processing of ceramics in order to produce at the reduced sintering temperature and time phase pure multifunctional magnetoelectrics with improved properties. The effects of the rare-earth (RE) substitution at Bi sites and modulation of the number of perovskite layers on the crystal structure, microstructure, and electrical and magnetic properties of Aurivillius phase ceramics in the Bi4Ti3O12-(Bi,RE)FeO3 system will be investigated.
Duration:	1.1.2017 – 31.12.2019

Effect of lanthanides on structure and nanomechanical properties of pyrochlore polymorphic Ln(Nb, Ta)O4 thin films prepared by sol-gel process.
Vplyv lantanoidov na štruktúru a nanomechanické vlastnosti pyrochlórových polymorfných Ln(Nb, Ta)O4 tenkých filmov pripravených sol-gel procesom.
Program:	VEGA
Project leader:	RNDr. Bruncková Helena, PhD.
Annotation:	The project is focused on research of structure of transparent nanocrystalline thin films based on lanthanides withNb and Ta in form of pyrochlore niobates and tantalates with ferroelastic properties. Polymorphic LaNbO4 andLaTaO4 films will be prepared individually and with addition of other lanthanides by sol-gel process fromprecursors deposited on silicon substrates using spin-coating method. Determination of effect of Nd, Sm, Eu andGd components on structure of both systems will help to clarify mechanism of phase transformation occurring infilms in heating process. In addition, the project is focused on characterization of mechanical properties offilm/substrate systems by nanoindentation and the relationship between them. Elastic modulus and hardness ofsimple LaNbO4 and LaTaO4 films will be determined from their composite values. The results could help tocontribute the knowledge about ferroelastic films in terms of their possible application as solid electrolytes in theelectrotechnical industry.
Duration:	1.1.2017 – 31.12.2019

Research of systems of duplex nanocomposite PVD coatings with laser – modified base material intended for pressure mould cast applications.
Výskum systémov duplexných nanokompozitných PVD povlakov s laserom modifikovaným podkladovým materiálom pre aplikácie tlakového liatia kovov.
Program:	VEGA
Project leader:	Ing. Jakubéczyová Dagmar, CSc.
Annotation:	The goal of the project is the development of an innovative process of surface treatment of tools and parts of moulds for pressure metal casting. The process involves laser heating of tool surface which takes place after the final thermal treatment, and subsequent depositing of duplex PVD coating. The contribution of the project willconsist in testing the nanocomposite PVD coatings deposited to specimens from steel intended for hotapplications, subjected to laser treatment before coating and testing their mechanical,tribological and chemical properties at interaction of molten aluminium with the mould material. By treatment of these materials / machine parts by laser in combination with duplex PVD coating the following properties will be achieved: high resistance towear and excellent resistance to thermal shocks which are the factors affecting service life of functional parts of moulds used for for pressure casting, and of mould cavities.
Duration:	1.1.2017 – 31.12.2019

Lowdimensional systems in electrode and magnetic materials potentially applied in green technologies.
Nízkorozmerné systémy pre elektródové a magnetické materiály využité v zelených technológiách
Program:	VEGA
Project leader:	RNDr. Strečková Magdaléna, PhD.
Annotation:	The growing demand for energy and depletion of primary fossil energy resources causes an increasing pressure on use of alternative energy sources in larger scale. The project will be focused on the preparation and development of technologies producing 1D and 2D nanostructures. The carbon fibers incorporating metalnanoparticles represent a prospective materials for catalytic hydrogen evolution. Ferrite thin films and nanofibers are potentially useful for the preparation of soft magnetic composites with low eddy currents and total current losses during magnetization. The needle-less electrospinning technology will be used for fibers production due to cheap, user friendly and production of fibers in a wider scale. The thin ferrite films will be prepared by sol-gel method. The main aim of project concentrates on the effect of input parameters of the solutions influence the finalfunction properties of prepared fibers and films.
Duration:	1.1.2017 – 1.12.2019

Sintered biologically degradable materials based on the iron powders.
Spekané biologicky odbúrateľné materiály na báze práškového železa.
Program:	VEGA
Project leader:	RNDr. Kupková Miriam, CSc.
Duration:	1.1.2015 – 31.12.2017

Microstructure development and properties of functional composites based on progressive soft magnetic alloys
Vývoj mikroštruktúry a vlastnosti funkčných kompozitov založených na progresívnych magneticky mäkkých zliatinách
Program:	VEGA
Project leader:	Ing. Bureš Radovan, CSc.
Duration:	1.1.2015 – 31.12.2017

Phase transformation in sol-gel R1/3(Nb, Ta)O3 ceramics and thin films based on rare earth elements.
Fázové transformácie v sol-gel R1/3(Nb, Ta)O3 keramike a tenkých filmoch na báze prvkov vzácnych zemín
Program:	VEGA
Project leader:	RNDr. Bruncková Helena, PhD.
Annotation:	The main part of the project is concerned on the study of sol-gel processes during preparation of R1/3MO3 (R = La, Nd, Eu and M = Nb, Ta) precursors perovskite ceramics and thin films and the influence on polymeric M-complex on phase composition, microstructure and mechanical properties. La1/3NbO3 and La1/3TaO3 thin films will be prepared by spin-coatingmethod onto the SiO2/Si substrates from sols with different solvent (methanol, ethanol) and chelating agent (citric, tartaric acid) synthetized by polymeric complex sol-gel process. At preparation rare-earth precursos R (R = La, Nd and Eu) will be studied influence of the transformation temperature of pyrochlore R3MO7 and RMO4 phase on perovskite R1/3MO3 in final ceramics and nanocrystalline films. In addition the project will be oriented on the study of evolution of the morphology and nanoparticle size and measurement of the mechanical properties of ceramic systems by nanoindentation.
Duration:	1.1.2014 – 31.12.2016

Hybrid composite systems with bioglass component
Hybridné kompozitné systémy s bioskelnou zložkou
Program:	VEGA
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Annotation:	Project is focused on research and development of hybride composite systems with bioglass component applicable in reconstruction and regenerative medicine. The aim of the project is a more detailed analysis of relationships between interaction of various types of polymer phase, synthesized during preparation ofcomposites, with surface of bioglass particles and its influence on microstructure, mechanical properties and biodegradation of composites. An important part of the project is study of nanohybride composites with homogeneous silico-organic matrix formed by sol-gel synthesis.
Duration:	1.1.2014 – 31.12.2016

Investigation of phase transitions induced in magnetoelectric ceramics by chemical substitution and temperature changes
Štúdium fázových prechodov indukovaných v keramických magnetoelektrikách chemickou substitúciou a teplotnými zmenami
Program:	VEGA
Project leader:	RNDr. Kovaľ Vladimír, DrSc.
Annotation:	The main goal of the proposed research is to identify and describe the fundamental mechanisms involved in phase transitions in rare earth substituted BiFeO3 magnetoelectrics. Multifunctional ceramics will be prepared bymodified solid-state reaction with the selected lanthanides and various concentrations of substituting element. A thorough analysis of the dielectric response measured in wide frequency and temperature ranges will be carried out in order to evaluate the basic processes related to the magnetoelectric coupling. The effect of the introduction of rare earth ions in BiFeO3 on the phase evolution and magnetic ordering will be investigated in relation to both the rare earth concentration and variation in temperature. Understanding fundamental structure-property relationships and their connection to the stoichiometric composition would allow fabricating multifunctional ceramics with improved magnetoelectric properties for potential applications in microelectronics and spintronics.
Duration:	1.1.2014 – 31.12.2016

Investigation of degradation processes of advanced nanocomposite mutilayers in melt of aluminum foundry alloys.
Výskum procesov degradácie moderných nanokompozitných multivrstiev v tavenine zlievárenských zliatin hliníka.
Program:	VEGA
Project leader:	Ing. Jakubéczyová Dagmar, CSc.
Annotation:	The objective of the project is to study the partial processes occurring in the interaction of aluminum melt with advanced PVD coatings deposited onto the substrate used for the production of cores for forms and ejectors.There will be analysed the local tribological and mechanical properties of systems melt – coating-substrate depending on the variability of the process of preparation, composition and application as a result of the environmental influence. The main benefits of the project will include the selection and testing of advancedmultilayer and nanocomposite coatings deposited on samples from steels for hot working and testing their resistance in molten aluminum. Preferred features of this steel group coated by optimal types of coatings will pose the combination of properties such as high abrasive wear resistance and superior protection against thermal shocks, which are essential factors influencing lifetime of functional components of forms for metal casting under pressure.
Duration:	1.1.2014 – 31.12.2016

AMETIST – Biodegradable metallic materials prepared by powder technologies
Biologicky odbúrateľné kovové materiály pripravené práškovými technológiami
Program:	SRDA
Project leader:	RNDr. Kupková Miriam, CSc.
Project webpage:	http://ametist.saske.sk
Duration:	1.7.2012 – 31.12.2015

Preparation and characterization of nanostructured functional layers
Príprava a charakterizácia nanoštruktúrovaných funkčných vrstiev
Program:	VEGA
Project leader:	RNDr. Kupková Miriam, CSc.
Duration:	1.1.2012 – 31.12.2015

PROMALLOY – Progresive soft magnetic materials base on multicomponent alloys
Progresívne magneticky mäkké materiály na báze viaczložkových zliatin
Program:	SRDA
Project leader:	RNDr. Strečková Magdaléna, PhD.
Annotation:	Perspective soft magnetic composites (SMCs) for various electrotechnical applications are designed as ferromagnetic powder particles coated by very thin dielectric layer. The basic parameters of such prepared SMCs are low coercivity, high value of saturation magnetization and of complex permeability. One of the most important electrical parameter is the high value of specific resistivity, which is ensured by a minimum content of appropriately selected electrical insulating coating with respect to the individual ferromagnetic powder particles completely isolated from each other. The present project is concerned with preparation and overall characterization of SMCs from i) preparation of a ferromagnetic material, ii) through the chemical synthesis of dielectric coatings and the coating process on powder particles, iii) up to final characterization of magnetic, electrical and mechanical properties of the prepared SMCs. Soft magnetic powder material (SMM) will be represented by Permalloy-type alloy (NiFe) with addition of suitable additives prepared by high energetic milling. SMM will be characterized from the microstructure and morphology point of view by use of SEM an XRD analysis. The resulting structural characteristics will be confronted with magnetic properties. The excellent SMM will be selected from prepared alloying powder and further coated by electrically insulating layer. Theprepared core/shell powders will be compacted by powder metallurgical methods (cold uniaxial pressing) and finally heat treatment. The final SMCs will be characterized from material, electrical and last but not least magnetic point of view with regard to a design of functional SMCs for the applications at moderately high frequencies.
Duration:	1.1.2015 – 31.12.2015

MIKROMATEL – Advanced technology of preparation of micro-composite materials for electrotechnics
Progresívna technológia prípravy mikrokompozitných materiálov pre elektrotechniku
Program:	EU Structural Funds Research & Development
Project leader:	Ing. Bureš Radovan, CSc.
Project webpage:	http://www.imr.saske.sk/project/mikromatel/index.html
Duration:	1.12.2010 – 31.3.2015

Metallic biomaterials prepared by powder-processing techniques
Kovové biomateriály pripravené práškovými technológiami
Program:	VEGA
Project leader:	RNDr. Kupková Miriam, CSc.
Duration:	1.1.2012 – 31.12.2014

Preparation, microstructure and properties of magnetic composites based on iron powders.
Príprava, mikroštruktúra a vlastnosti magnetických kompozitov na báze práškového železa.
Program:	VEGA
Project leader:	Ing. Bureš Radovan, CSc.
Annotation:	The aim of the project is the study of correlation of powder morphology,microstructure and properties of SMC.Composite powders prepared by chemical methods will be compacted using advanced technology of microwave sintering.Project will focus on:a)study of methods for preparation of composite powders related to their physical and technological properties b)study of the influence of modern compaction methods on microstructure of SMC in comparison with conventional pressing and sintering c)study of changes in electric,magnetic and mechanical properties of composites in dependence on technology of preparation d)correlation of technological parameters,morphology,microstructure a physical properties of SMC.Methods:quantification of morphology and microstructure using image analysis stereology;analysis of electric and mechanical properties.Project will help to explain the microstructure development patterns and nature of changes in the properties of SMC with the aim to achieve homogeneity and isotropy of properties.
Duration:	1.1.2012 – 31.12.2014

Composite biocement-biopolymer systems with addition of surfactants
Kompozitné systémy biocement-biopolymér s povrchovo aktívnymi aditívami
Program:	VEGA
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Annotation:	The aim of project is study of the relation between physico-chemical and mechanical properties of composite withaddition of surfactants during composite biocement-biopolymer systems (calcium phosphatecement-polyhydroxybutyrate) preparation process. The effect of surfactant on particle morphology of formedapatite phase, microstructure of interface between polymeric and inorganic composite components as well as on mechanism of processes in biocement hardening will be more detailed examined.
Duration:	1.1.2011 – 31.12.2013

Multiferroics – fabrication, structure and properties of substitutionally modified bismuth ferrite based materials
Multiferoické materiály – príprava, štruktúra a vlastnosti substitučne modifikovaných perovskitových systémov na báze oxidu železito-bizmutitého
Program:	VEGA
Project leader:	RNDr. Kovaľ Vladimír, DrSc.
Annotation:	The overall objectives of the proposed research are to prepare a multiferroic material that simultaneously show electric and magnetic order, to study dielectric properties of substitutionally modified bismuth ferrite (BiFeO3)-type ceramics; and to identify fundamental mechanisms and interactions responsible for magnetoelectric effect appearing in magnetoelectrics. A classic solid state reaction method will be employed to produce experimental materials. The effect of ionic substitution at the A-sites of ABO3 perovskite on spontaneous electric polarization in multiferroic Bi(1-x)LnxFeO3 systems (Ln is a substituting element) will be investigated. For A-site substitution, selected lanthanides and alkaline-earth metals are intended to be testified in various concentration profiles. AC impedance spectroscopy will be used to identify the contributions of structural elements to AC conductivity in wide frequency range and at selected temperatures, including temperatures close to phase transitions.
Duration:	1.1.2011 – 31.12.2013

Research of the properties of composite coatings applied by advanced PVD technologies onto powder metallurgy tools
Výskum vlastností kompozitných povlakov aplikovaných modernými PVD technológiami na nástrojoch práškovej metalurgie
Program:	VEGA
Project leader:	Ing. Jakubéczyová Dagmar, CSc.
Annotation:	Research of the properties of multilayer composite coatings deposited by modern PVD technologies onto tools produced by powder metallurgy (PM). Modern PVD coating technologies (ARC and LARC methods)will be used for deposition of coatings based on (Ti,Al)N with addition of Cr, Si, or as Ti substitution. The system coating–base substrate will be subjected to the research focusing on degradation of the coating surface under condition of mechanical wear. For the investigation of failure mechanisms will be used analytical methods – light, electron andtransmission microscopy, AFM to study surface morphology and its roughness, evaluation of adhesive-cohesive properties, indentation and tribological tests, mechanical bending and compression tests and tests of service life.Interpretation of mutual physical and tribological relationships within the scope of analysed systems and conditions of testing on concrete materials will contribute to the knowledge on utilization of new types of coatingsin the working process.
Duration:	1.1.2011 – 31.12.2013

Evolution of the microstructure and phase transformation of sol-gel precursors in lead-free ferroelectric (K, Na)NbO3 thin films
Vývoj mikroštruktúry a fázová transformácia sol-gel prekurzorov bezolovnatých feroelektrických (K, Na)NbO3 tenkých filmov
Program:	VEGA
Project leader:	RNDr. Bruncková Helena, PhD.
Annotation:	The main part of the project is concerned on the study of processes during preparation of lead-free ferroelectricKNbO3 (KN), NaNbO3 (NN) and (K0.5Na0.5)NbO3 (KNN) thin films from sols and their influence on the phasecomposition and microstructure. Environmental acceptable KNN thin films will be prepared by spin-coatingmethod onto the Al2O3 and SiO2/Si substrates from sols with different concentration, synthetized by sol-gelprocess from acetates of K and Na with polymeric Nb-complex. For the preparation of the films will be appliedmodified Pechini method utilized by Nb-ethylene glycol-tartarate complex instead of the classical citrate method.In addition the project will be oriented on the study of transformation processes on amorphous films afterpyrolysis and final 1-3 layered KNN nanocrystalline films with the perovskite phase and development of theirmicrostructure.
Duration:	1.1.2011 – 31.12.2013

Center of excellence of biomedical technologies
Centrum excelentnosti biomedicínskych technológií
Program:	EU Structural Funds Research & Development
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Duration:	15.11.2010 – 31.10.2013

Advanced implants seeded with stem cells for hard tissue regeneration and reconstruction
Pokročilé implantáty s naočkovanými kmeňovými bunkami na regeneráciu a rekonštrukciu tvrdých tkanív
Program:	EU Structural Funds Research & Development
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Duration:	1.1.2010 – 31.3.2012

Compaction of microcomposite materials based on iron powder
Štúdium kompaktizácie mikrokompozitných materiálov na báze Fe práškov
Program:	VEGA
Project leader:	Ing. Bureš Radovan, CSc.
Annotation:	The project objective is study microcomposite materials (MM) compaction with special physical properties based on Fe and Fe alloyed powders with insulation coated layer based on inorganic or organic compounds. Conventional and innovated methods of pressing and sintering will be used. Key attention will be focused on a) study of morphological, microstructural and chemical changes in relation to pressure and temperature as main compaction parameters, b) quantification of MM microstructure, c) explanation of processes performing in interphase regions during compaction, d) correlation of compaction parameters, microstructure and properties of MM. Methodics: quantification of compressibility and sinterability, LOM, SEM+EDS, image analysis, stochastic stereological methods, mechanical,electrical and magnetic properties. It is expected that project will contribute to explanation of compaction patterns of MM with goal to achieve homogeneous and defective free microstructure and isotropic materials properties
Duration:	1.1.2009 – 31.12.2011

Processing, structure and properties of metal matrix composites originating from coated, nanostructured or amorphous raw materials
Výroba, štruktúra a vlastnosti kompozitov s kovovou matricou, pripravených z povlakovaných, nanoštruktúrnych alebo amorfných surovín.
Program:	VEGA
Project leader:	RNDr. Kupková Miriam, CSc.
Annotation:	The project deals with metal matrix composites made by powder metallurgy from coated, nanostructured or amorphous materials. Metals with nanostructured or amorphous reinforcements represent a relatively new and yet poorly understood class of materials. The project is oriented on fundamentals rather than on a specific composite development. The aim is to answer the questions: How is the powder-mass\’ behavior related to properties of individual coated, nanostructured or amorphous particles? What are the fundamental processes during compaction and sintering of such powders and how do they affect the product’s microstructure? What are the basic links between microstructure and macroscopic properties of metals with coated, nanostructured or amorphous reinforcements?Both experimental and theoretical means will be used to reach the project goals. Experiments combined with a theoretical study of model systems should contribute to the understanding of properties and potential of a given class of materials.
Duration:	1.1.2009 – 31.12.2011

Biocements on composite basis with active calcium phosphate-biopolymer interface
Biocementy na báze kompozitov s aktívnym rozhraním kalcium fosfát- biopolymér
Program:	VEGA
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Annotation:	It was analysed the influence of the chitosan addition to calcium phosphate biocement on hardening process, microstructure formation and mechanical properties of composite.The effect of polyhydroxybutyrate microparticles addition into biocement on mechanical and physico-chemical properties was studied hereby with modification of the preparation process from the point ofview of final mechanical properties, which were increased about 50% in comparison with pure biocement. The carbonated nanohydroxyapatite was synthesized via tetrabutylammonium hydroxide addition. New three component macroporouspolyhydroxybutyrate-chitosan-hydroxyapatite system was developed with suitable in-vitro bioactivity and excluding of high toxic halogen solvents.
Duration:	1.1.2008 – 31.12.2010

Sol-gel processes of the synthesis of ferroelectric nanoprecursors and their influence on phase composition and microstructure in thin layers
Sol-gel procesy syntézy feroelektrických nanoprekurzorov a ich vplyv na fázové zloženie a mikroštruktúru v tenkých vrstvách
Program:	VEGA
Project leader:	RNDr. Bruncková Helena, PhD.
Annotation:	The main part of the project is concerned on sol-gel processes of the synthesis of nanoprecursors PZT,PMN, PMnN, PFN and PZN ferroelectric ceramics and thin layers and examines their influence on the phasecomposition in final materials. For the preparation of ferroelectric thin layers from sol-gel solutions onto thesubstrate by spin-coating method, hybrid composite slurrries will be synthetised by sol-gel process from organiccomponents by dispersing of nanoprecursors in the sols. Study of the processes of formation of the resultingperovskite phase in thin layers during the thermal treating and the development of the microstructure andanalysis their relationship to physical properties is also part of the project.
Duration:	1.1.2008 – 31.12.2010

Study of Characteristics of PVD Coatings on the Tool Steels prepared by Powder Metallurgy and their Behaviour
Štúdium charakteristík PVD povlakov na nástrojových oceliach pripravených práškovou metalurgiou a ich
Program:	VEGA
Project leader:	Ing. Jakubéczyová Dagmar, CSc.
Annotation:	Study of the effect of the non-coated and coated inserts (VANADIS30 and S390 grades), prepared by powder metallurgy (PM), on the service life at machining of selected sintered materials based on iron. Single- and multilayered coatings based on TiN will be deposited by the PVD method. Complex analysis of the coating/substrate system, microstructural composition of deposited coatings and determination of mechanical and technological properties of the coated system. Detailed analysis of the failure of tools and PM workpiecesmainly in the area of their contact. Explanation of physical and tribological relationships between the material of sintered workpiece and the cutting tools. The results will be a contribution to the knowledge about themachinability of sintered materials by the coated PM cutting tools.
Duration:	1.1.2008 – 31.12.2010

Tribologic aspects of sintered materials failures as a result of rolling contact fatigue and wear
Tribologické aspekty porušovania spekaných materiálov s dôrazom na kontaktnú únavu a opotrebenie.
Program:	VEGA
Project leader:	Ing. Jakubéczyová Dagmar, CSc.
Annotation:	The subject of project is to study the behavior of classical sintered ferritic materials with the density cca 7g.cm-3 under contact fatigue and wear conditions. Sintered materials, by their specific structure (presence of pores ), are known for their different responses to different forms of stresses. These facts along with theintensive expansion in production of spareparts on the basis of sintered materials, mostly in automotive industry, call for both basic research and systematic monitoring of attributes affecting service life of materials under stress. The results achieved will widen the area of knowledge in this field and assist in establishing the priorities of main directions of basic or applied research.
Duration:	1.1.2008 – 31.12.2010

Investigation of correlation between properties of induvidual coated powder particles and behaviour of powder mass, green compacts and sinte red materials made of such particles
Štúdium korelácie medzi vlastnosťami povlakovaných práškových častíc a správaním sa práškovej masy, surových výliskov a spekaných materiálov pripravených z takýchto častíc
Program:	VEGA
Project leader:	RNDr. Kupková Miriam, CSc.
Duration:	1.1.2006 – 1.12.2008

Biokomposites on hydroxiapatite basis with oriented structure
Biokompozity na báze hydroxiapatitu s orientovanou štruktúrou
Program:	VEGA
Project leader:	Ing. Medvecký Ľubomír, DrSc.
Duration:	1.1.2005 – 1.12.2007

Multicomponent and doped ferroelectric systems of relaxor type on PZT and PMN basis with high surface activity and chemical homogeneity
Multikomponentné a dotované relaxátorové feroelektrické systémy na báze PZT a PMN s vysokou povrchovou aktivitou a chemickou homogenitou
Program:	VEGA
Project leader:	RNDr. Bruncková Helena, PhD.
Duration:	1.1.2005 – 1.12.2007

Study of coated surface layers of tool steels prepared by powder metallurgy
Štúdium povlakovaných povrchových vrstiev nástrojových ocelí pripravených práškovou metalurgiou
Program:	VEGA
Project leader:	Ing. Jakubéczyová Dagmar, CSc.
Annotation:	Study of surface layers of PM tool steels by application of coating with PVD-technologies, duplex coating (plasma nitrided layer as a "support layer" for additional PVD-methods) with the aim of an improvement of their functional properties. Surface treatment of tools made from PM steels – machining tools (HSS-S590-Vanadis 30), cutting and forming tools (Vanadis 4 a 6, K190). Determination of suitable parameters of thermal deposition processes from the point of view of the coat/surface system behaviour under specific loading conditions. Microstructure evaluation by light and scanning electron microscopy, in connection with image analysis (IA) oriented on the surface characteristics (microhardness, adhesion, wear resistance).
Duration:	1.1.2005 – 1.12.2007

Analysis of behaviour and properties of powder compacts at various stages of compaction
Analýza správania a vlastností výliskov v rôznych štádiách kompaktizácie
Program:	VEGA
Project leader:	RNDr. Kupková Miriam, CSc.
Duration:	1.1.2003 – 31.12.2005

Surface treatment of high speed steel prepared by powder metallurgy
Povrchová úprava práškovej rýchloreznej ocele
Program:	VEGA
Project leader:	Ing. Jakubéczyová Dagmar, CSc.
Annotation:	The aims of the proposed project can be characterised as follows; a complex analysis of the materials developed during previous projects solving, consolidated by hot isostatic pressing (HIP) technology with optimised microstructure, heat treatment and excellent mechanical properties including the microstructure evaluation depending on production process conditions, intermediate product refinement and final high speed cutting tool – cutting inserts taps. The selected materials – powder high speed steel alloyed by Co and Nb resp. vanadis 30 type – will be surface treated by plasma nitridation in order to achieve higher hardness, toughness and wear resistance. The appropriate thickness of nitride coating will be defined at different time-temperature conditions and documented by microstructural analysis. The wear resistance, hardness, ultimate strength, toughness and cutting edge durability tests will be realised.
Duration:	1.1.2002 – 31.12.2004

Metallic foams and functionally graded materials: Investigation of influence of microstructure on macroscopic properties
Kovové peny a gradientné materiály: štúdium vplyvu mikroštruktúry na makroskopické vlastnosti
Program:	VEGA
Project leader:	RNDr. Kupková Miriam, CSc.
Duration:	1.1.2000 – 31.12.2002

Regularities of relationship between microstructure and properties of unconventional high speed steels produced via powder metallurgy
Zákonitosti vzťahov medzi mikroštruktúrou a vlastnosťami nekonvenčných rýchlorezných ocelí vyrobených cestou práškovej metalurgie
Program:	VEGA
Project leader:	Ing. Jakubéczyová Dagmar, CSc.
Annotation:	The aim of the scientific project is to study the relationship between technology conditions, microstructure and properties of newly developed unconventional high-speed steels (HSS) prepared via progressive powder metallurgy (PM) techniques. The starting chemically modified powder with addition of microcrystalline powders will be produced under rapid solidification (RS) conditions using nitrogen atomising of melt into nitrogen and consolidated. There will be determined the relationship between chemical composition, microstructure and cutting properties.
Duration:	1.1.1999 – 31.12.2001