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| LightMat4Space – Materiál pre vesmírne aplikácie na báze ľahkého nanokryštalického hliníka (modelovanie a verifikácia technológie) | |
| Leightweight nanocrystalline aluminium based material for space applications (modeling and technology verification) | |
| Program: | ERANET |
| Project leader: | doc. RNDr. Lofaj František, DrSc. |
| Annotation: | The aim of the proposed project is to develop lightweight structural material based on nc-Al with deposited gradient hydrogenated C-coating with high wear and contact fatigue resistance under cryogenic conditions for space applications (e.g. gear boxes in extraterrestrial vehicles). The originality of the main idea of the project is in the combination of a novel lightweight and high strength Core/Shell Precipitate (C/S) hardened nc-Al alloys with C-coatings which will result in the improvement of wear and fatigue resistance of the alloy in cryogenic conditions and ultrahigh vacuum. |
| Duration: | 1.10.2015 – 30.9.2017 |
| GRACE – Kompozity keramika-grafénové platničky pre využitie v tribologických systémoch pracujúcich vo vodnom prostredí | |
| Graphene-ceramic composites for tribological application in aqueous environments | |
| Program: | ERANET |
| Project leader: | prof. RNDr. Dusza Ján, DrSc. |
| Duration: | 1.9.2014 – 31.8.2017 |
National
| VEGA – Vplyv prídavkov Nb a V na vysokoteplotnú stabilitu a mechanické vlastnosti multikomponentných Ti-Ta-Zr-Hf-Me-N povlakov (Me= Nb, V), pripravených reakčným DC magnetrónovým naprašovaním a HiTUS technológiou | |
| – | |
| Program: | VEGA |
| Project leader: | Ing. Kvetková Lenka, PhD. |
| Duration: | 1.1.2023 – 31.12.2025 |
| HaTo-Coat – Tvrdé a húževnaté vrstvy na báze boridov a nitridov pripravené progresívnymi PVD technikami | |
| Hard and tough boride and nitride-based coatings prepared by advanced PVD techniques | |
| Program: | SRDA |
| Project leader: | doc. RNDr. Lofaj František, DrSc. |
| Annotation: | The project aims at the increase of fracture toughness of thin hard PVD boride- and nitride based coatings deposited using advance sputtering techniques including HiPPMS and HiTUS while keeping their high thermal and oxidation resistance by means of employment of the intrinsic and extrinsic factors. The main idea is based on a „new design“ of hard coatings including simultaneous contribution from the modification of chemical composition, morphology and structure of the coatings via exploitation of the potential of structure control provide by HiPPMS and HiTUS technologies with high level of sputtered material ionization and high density of working gas plasma, respectively. Both technologies result in the coatings with high densities and allow us to modify the nanostructures, size of the nanocrystallites, modify chemical composition etc. and subsequently, to obtain different physical properties of the coatings. The activities of the project are focused on the development of transition metals-based boride and nitride coatings with improved mechanical (hardness > 30 GPa) and tribological properties (coefficient of friction < 0.3) for extreme conditions (> 1000°C, aggressive oxidation environment, etc.). The main effort will be oriented toward the elimination of the main drawbacks of hard coatings, i.e. toward the increase of their inherently low fracture toughness and increase of their oxidation resistance without hampering their hardness via understanding of the mechanisms of nanostructure evolution, decomposition of the high entropy multicomponent solid solutions, formation of stable phases and their relationships to mechanical and tribological properties. The research activities include also the correlations of the experimental results with the ab initio predictions based on theoretical models related to atomic structure and electronic configuration of the studied systems. |
| Duration: | 1.7.2022 – 30.6.2025 |
| Štúdium vplyvu podmienok prípravy vzoriek mikrometrických rozmerov fokusovaným iónovým zväzkom na ich mechanické vlastnosti | |
| Stufdy of the influence of sdamples preparation conditions of micrometric dimensions by focused ion beam on their mechanical properties | |
| Program: | VEGA |
| Project leader: | Ing. Vojtko Marek, PhD. |
| Duration: | 1.1.2022 – 31.12.2024 |
| FotDekont – Progresívne fotokatalytické materiály pre biologickú a chemickú dekontamináciu | |
| – | |
| Program: | Other projects |
| Project leader: | Mgr. Shepa Ivan, PhD. |
| Duration: | 7.2.2023 – 30.11.2023 |
| CEDITEKII – Rozvoj a podpora výskumno – vývojových aktivít Centra pre testovanie kvality a diagnostiku materiálov v oblastiach špecializácie RIS3 SK | |
| Advancement and support of R&D for "Centre for diagnostics and quality testing of materials" in the domains of the RIS3 SK specialization | |
| Program: | Štrukturálne fondy EÚ Výskum a inovácie |
| Project leader: | prof. RNDr. Dusza Ján, DrSc. |
| Duration: | 1.1.2019 – 30.6.2023 |
| Vysokoteplotné vlastnosti boridových MeB2 (Me = Ti, Zr, Hf) keramických kompozitných materiálov | |
| High-temperature properties of diboride MeB2 (Me = Ti, Zr, Hf) ceramic composite materials | |
| Program: | VEGA |
| Project leader: | Ing. Kovalčíková Alexandra, PhD. |
| Duration: | 1.1.2020 – 31.12.2022 |
| Vplyv kontinuálneho a pulzujúceho kvapalinového prúdu na mikroštruktúru, vlastnosti a integritu v materiáloch. | |
| Effect of continual and pulsating fluid jet on microstructure, properties and integrity on materials | |
| Program: | VEGA |
| Project leader: | doc. RNDr. Hvizdoš Pavol, DrSc. |
| Annotation: | The project is focused on the experimental observation and assessment of the interaction of continuous and pulsating liquid jet with and pulsating water jet with frequency of 20 kHz with material. The energy of the water stream at the site of action releases the mass and causes elastic or plastic deformation, thereby initiating dynamic physical phenomena. These phenomena are manifested in the form of periodic, continuous but non-homogeneous manifestations of vibrational and acoustic emission and their subsequent dynamic manifestations in a wide frequency spectrum. The ongoing disintegration process deforms the wave – changing its shape. An analysis of the waveform change can be identified in the elastic and plastic regions. Through the dynamic signal timing, the process of interaction of the water stream with the material can be controlled, resulting in improved mechanical resistance of the surface layer, controlled change of the microstructure, elimination of delamination and residual stresses. |
| Duration: | 1.1.2018 – 31.12.2021 |
| MiCOAT – Multikomponentné boridové a nitridové PVD povlaky pre ultravysokoteplotné aplikácie | |
| Multicomponent boride and nitride coatings for ultrahigh temperature applications | |
| Program: | SRDA |
| Project leader: | doc. RNDr. Lofaj František, DrSc. |
| Annotation: | The proposed project deals with an experimental development of principally new hard coatings based on nitridesand borides with stable structure and excellent mechanical properties up to temperatures approaching 1500°Cand deposited by the novel deposition methods of highly ionized magnetron sputtering. The main idea is thedevelopment of hard high temperature multicomponent nanocomposite coatings originating from the solidsolutions of ternary systems Ti-Al-N, Cr-Al-N, Ta-Al-N, V-Mo-N, TiB2, Ti-B-N, CrB2, TaB2, etc. by doping byadditional transition metals with high melting temperatures (Zr, Hf, Ta, Nb, V, Mo, W, Y, etc.). The main objectiveof work, which is a logical continuation of the previous APVV-14-173 project, is the increase of the temperaturesof the coating structure stability and degradation of mechanical properties well above 1000 oC by means of theunderstanding of the mechanisms of nanostructure formation and decomposition in the high entropymulticomponent solid solutions deposited by novel deposition technologies. The experimental Works will besupported by theoretical ab initio predictions. |
| Duration: | 1.8.2018 – 30.6.2021 |
| Vplyv grafénu na tribologické vlastnosti keramických materiálov na báze karbidov a boridov | |
| The influence of graphene platelets addition on tribological properties of ceramic composites based on carbides and borides. | |
| Program: | VEGA |
| Project leader: | Ing. Kovalčíková Alexandra, PhD. |
| Duration: | 1.1.2017 – 31.12.2019 |
| Deformačné a lomové vlastnosti keramických materiálov na nano a mikro úrovni | |
| Deformation and fracture properties of ceramic materials in micro/nano scale | |
| Program: | VEGA |
| Project leader: | prof. RNDr. Dusza Ján, DrSc. |
| Annotation: | Project deals with acquirement and application of progressive testing methods for study of deformation and fracture properties of ceramics in micro/nano scale. The project focuses on sintered carbides WC-Co, ceramic materials Si3N4 a ZrB2 and others, which are prepared by spark plasma sintering. The main contribution of the project is the understanding of the newest testing methods, clarification of relationship between the structure (crystallographic orientation of single grains, grain boundaries) and micro/nano mechanical and fracture properties (hardness, strength, Young´s modulus, Yield stress, indentation creep, scratch resistance) of selected ceramic materials. |
| Duration: | 1.1.2016 – 31.12.2018 |
| MICONA – Multikomponentné nanokompozitné povlaky pripravené vysokoionizovanými depozičnými technológiami | |
| Multicomponent nanocomposite coatings prepared by highly ionized deposition technologies | |
| Program: | SRDA |
| Project leader: | doc. RNDr. Lofaj František, DrSc. |
| Annotation: | Project is focused on the application of the latest theoretical models for the increase of thermal stability, structural and oxidation resistance, wear resistance, lifetime and toughness in the development of new hard three- and multicomponent nanocomposite coatings based on Ti-, Cr-, Al- and W-nitrides by means of doping by the reactive elements and on the optimization of the newest iPVD processes with the high degree of ionization of the deposited material based on HiPIMS and HiTUS technologies. The main idea is to create new nanostructural systems based on the known 2D and 3D nanocomposite systems (TiB2, Ti-B-N, Ti-Al-N, Cr-Al-N, W-C, W-C-N) doped with additional elements (Ta, V, Y, W, Nb, Si, B a pod.), which will increase toughness and crack resistance of the coatings. They will simultaneously create active barriers supressing oxidation and thus, reduce mechanical properties degradation of the coatings and/or coated substrate at elevated temperatures. The work, which is a direct continuation of the previous project APVV 0520- 10, also involves the investigation of the relationships among the deposition parameters, resulting structure and properties of new systems for hard coatings and basic understanding of the mechanisms of the nanostructure formation, metastable phase decomposition, formation of stable structures, etc. in the case of novel deposition technologies with high degree of ionization of the sputtered material. |
| Duration: | 1.7.2015 – 29.6.2018 |
| Vplyv stupňa ionizácie plazmy na štruktúru a mechanické vlastnosti MeC a MeN (Me=Ti, Cr, W) povlakov pripravovaných vysokoenergetickými pulznými PVD procesmi | |
| The effect of high plasma ionization on structure and mechanical properties of high energy pulsed PVD MeC and MeN (Me=Ti, Cr, W) based coatings | |
| Program: | VEGA |
| Project leader: | Ing. Kvetková Lenka, PhD. |
| Annotation: | The project is aimed at the investigation of the fundamental relationships between the degree of ionization and the plasma density, as well as power density on the sputtered target on the microstructure and mechanical properties, such as hardness and tribological properties, of nitride and carbide coatings (TiN, Cr and WC) prepared by the novel HiPIMS and HITUS sputtering methods at temperatures below 200oC. The project includes a comparison of these relations with the results of conventional methods of magnetron sputtering, creation of a database of relationships preparation conditions -microstructure – properties of coatings prepared by these new methods as well as determination of optimum conditions for deposition technology of coatings with reproducible properties |
| Duration: | 1.1.2015 – 31.12.2017 |
| ConCer – Vývoj vodivej keramiky na báze SiC | |
| Development of SiC based conductive ceramics | |
| Program: | SRDA |
| Project leader: | doc. RNDr. Hvizdoš Pavol, DrSc. |
| Duration: | 1.10.2013 – 30.9.2017 |
| VEGA – Modelovanie napäťových stavov pri nanoindentácii a mechanickom zaťažení v kompozitných systémoch | |
| Modeling of stress state during nanoindentation and mechanical loading in composite systems (MONACO) | |
| Program: | VEGA |
| Project leader: | doc. RNDr. Lofaj František, DrSc. |
| Annotation: | Project deals with the mathematical and experimental modelling of stress states during instrumented indentation and scratch testing under uniaxial – and multiaxial loading of fixed beam in composite systems by means of finite element modeling and experimental testing in model systems. The aim of the project is to create a knowledge basis for the optimization of the conditions for the measurement of nanohardness and scratch resistance of thin hard coatings on hard and soft substrates using instrumented indentation and scratch testing and on the increase of mechanical bonding of beams under loading mimicking bicortical dental implants. |
| Duration: | 1.1.2014 – 31.12.2016 |
| Lokálne mechanické vlastnosti kostného cementu | |
| Local mechanical properties of bone cement | |
| Program: | VEGA |
| Project leader: | doc. RNDr. Hvizdoš Pavol, DrSc. |
| Annotation: | The main purpose of the project is to investigate mechanical properties of bone cement, as well as structuralintegrity and properties of interfaces of bone cement with selected prosthetic materials. The emphasis will be inexperimental studies of hardness and modulus of elasticity of bone cement by means of instrumented indentationand nanoindentation on local micro- and nano-level in relation with parameters of preparation, composition(presence and absence of antibiotics), and with parameters of formed microstructure (grain size, porosity) withaim to understand their influence on the resulting behaviour. Similarly, the cement / prosthesis interfaces will beinvestigated, the mechanical as well as tribological properties will be measured, and their consequnces on themechanical stability of particular joinings will be evaluated. |
| Duration: | 1.1.2013 – 31.12.2015 |
| SiNGra – Vývoj nitridu kremičitého s prídavkom multivrstiev grafénu | |
| Development of Si3N4 with addition of graphene platelets | |
| Program: | SRDA |
| Project leader: | Mgr. Tatarková Monika, PhD. |
| Annotation: | One of the ways how to improve the mechanical properties of silicon nitride is by formation of composite systems. After the discovery of graphene with its unique mechanical and electrical properties the investigation of graphene as a filler of different materials has started. Present research confirms the significant improvement of the mechanical and electrical properties of the polymer with graphene filler. It is expected that the incorporation of graphene platelets into the silicon nitride matrix improves the fracture toughness which should considerably broaden the potential application of ceramic materials. The aim of the project is to develop materials with the excellent fracture mechanical properties as well as functional properties. The parameter of the processing route and the complex of mechanical properties which are necessary for the estimation of application possibilities will be the results of the project. |
| Duration: | 1.7.2012 – 31.12.2015 |
| Mechanické vlastnosti zubnej skloviny a syntetických zubných výplní | |
| Mechanical properties of tooth enamel and synthetic dental materials | |
| Program: | VEGA |
| Project leader: | prof. RNDr. Dusza Ján, DrSc. |
| Duration: | 1.1.2012 – 31.12.2014 |
| Odolnosť proti tečeniu a tepelným šokom žiarovo-lisovaných Si3N4-SiC kompozitov s prídavkom oxidov vzácnych zemín | |
| The study of the creep behaviour and thermal shock resistance of Si3N4-SiC composites with rare-earth oxide additives | |
| Program: | VEGA |
| Project leader: | Mgr. Tatarková Monika, PhD. |
| Duration: | 1.1.2010 – 31.12.2012 |