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| H2MobilHydride – Vývoj a spracovanie pokročilých metalhydridových kompozitných materiálov pre uskladnenie vodíka určených pre mobilné aplikácie | |
| Developoment and processing of advanced metal hydride composites with specific microstructure properties for mobile hydrogen storage applications | |
| Program: | ERANET |
| Project leader: | RNDr. Nigutová Katarína, PhD. |
| Annotation: | The innovation goals of this project are to provide a novel metal hydride composite offering hydrogenation capacity close to Mg alloys, faster kinetics, higher dehydrogenation capacity, and limited material degradation per cycle. The material will be based on the concept of high entropy alloy with the addition of catalysts and will be produced not only in the conventional powder form, but also as thin sheets and bulk materials. The project will improve the fundamental understanding of the mechanisms governing the hydrogenation and high-temperature behavior of HEA-based composites and also provide a functional model of a new composite material for hydrogen storage, followed by a technology for its fabrication. |
| Duration: | 1.5.2023 – 30.4.2026 |
| EHSAL – Zvýšenie uskladňovacej schopnosti vodíka v ľahkých vysoko-entropických zliatinách (HEA) typu AlTiVCr prídavkom Ti3C2 Mxenu a veľkej plastickej deformácie | |
| Enhancement of Hydrogen Storage Properties of AlTiVCr Light Weight High Entropy Alloys (HEA) by Ti3C2 Mxene and Several Plastic Deformation | |
| Program: | European Interest Group (EIG) CONCERT-Japan |
| Project leader: | doc. Ing. Saksl Karel, DrSc. |
| Annotation: | Recently discovered AlTiVCr high entropy alloy (HEA) exhibits about 70x increase in equilibrium pressure, ~20 kJ/mol H2 decrease in desorption enthalpy (ΔH) relative to the benchmark TiVZrNbHf HEA possessing H/M ratio > 2 with 2.7 wt % hydrogens at 53 bar H2. The AlTiVCr HEA desorption enthalpy ΔH is ~40 kJ/mol and H/M ratio ~1. Since AlTiVCr alloy includes lighter-weight elements relative to earlier studied refractory HEAs, it is envisaged that AlTiVCr can be a potential lightweight metal hydride for future hydrogen storage application if its H/m ratio and hydrogenation/dehydrogenation kinetics can be improved. So far, the addition of Mxene (Ti3C2) as catalyst and nanosizing exhibited a significant influence on the kinetics and hydrogenation capacity of Mg metal hydrides independently. Therefore, in this study, we aim to develop a lightweight metal hydride composite of AlTiVCr HEA by the combination of three concepts of HEA, Mxenes (Ti3C2 Mxene) and nanosizing by high-pressure torsion (HPT). The influence of Mxene and deformation heterogeneities will be investigated and will be tailored for achieving lower ΔH, higher H/M ratio and faster kinetics. |
| Duration: | 1.4.2022 – 31.3.2025 |
| ExploGuard – Nové, výbuchom zvárané vrstevnaté materiály určené pre geotermálne elektrárne | |
| Novel explosive welded corrosion resistant clad materials for geothermal plants | |
| Program: | ERANET |
| Project leader: | doc. Ing. Saksl Karel, DrSc. |
| Annotation: | The aim of the project is to develop and characterize of brand new classes of clad materials prepared by explosion welding. Materials prepared by this method (capable to join very dissimilar types of metals and alloys) have high potential in replacement of conventional materials which are utilized in highly corrosive environments of geothermal industry e.g as in parts of heat exchangers, expansion vessels, medium transfer lines etc.. In respect to relatively large number of geothermal sources in Slovakia is the proposed research very interesting also for the needs of the Slovak republic. Clad materials finding nowadays also applications in petrochemical and food industry. |
| Duration: | 1.9.2014 – 31.8.2017 |
| MAMINA – Makro, Mikro a nano aspekty obrábania | |
| Macro, Micro and Nano Aspects of Machining | |
| Program: | FP7 |
| Project leader: | doc. Ing. Saksl Karel, DrSc. |
| Annotation: | The use of titanium, nickel-base and cobalt-base alloys is necessary for production of turbine parts and other components by the aerospace and power generation industries due to their high strength even in high-temperature regimes. On the other hand, these materials are known as themost difficult-to-machine metallic materials and, so far, only small progress has been made to improve their machinability. During the production of turbine components up to 50% of themanufacturing costs can be related to machining. Hence, the reduction of the production costs bythe optimisation of the cutting process is mandatory for European manufacturers to remaininternationally competitive.The MAMINA project will combine the work of ninenteen European universities, researchinstitutions and industrial companies to analyse and improve the machinability of three selectedalloys that are widely used in industry, namely Ti15V3Cr3Al3Sn (a titanium-base beta-alloy),Inconel IN706 (a nickel-base superalloy) and X40 (a cobalt-base alloy). As the chip formation isone of the key factors influencing the machinability of these materials, this process will be studiedin detail in a multidisciplinary approach. 24 early stage researchers from the fields of theoreticalphysics, materials science and mechanical engineering will work under the supervision ofexperienced scientists on metal cutting experiments, material analyses and simulations at the macro,micro- and nano-scale.Three different approaches will be made to improve the cutting process of the investigated alloysby means of: (1) introduction of enhanced manufacturing techniques; (2) production of progressivetools with extended endurance, and (3) development of free-machining alloys by the use ofpermanent and temporary alloying elements. The results will be transferred to applications by theindustrial partners of the consortium. It is expected that the production costs of improved machining will be reduced by up to 20% |
| Project webpage: | http://rzv014.rz.tu-bs.de/mamina/index.htm |
| Duration: | 1.11.2008 – 31.10.2012 |
National
| PNMHCS – Výskum a vývoj prototypu nízkotlakovej čerpacej stanice pre zásobovanie metalhydridových zariadení zeleným vodíkom | |
| Research and development of a prototype of a low-pressure refuelling station for refuelling metal hydride equipment with green hydrogen | |
| Program: | SRDA |
| Project leader: | RNDr. Nigutová Katarína, PhD. |
| Annotation: | The purpose of the project is the research, development and designing of a prototype of a low-pressure refuelling station intended for refuelling mobile technical equipment for hydrogen storage at low pressure in metal hydrides (MH). The existing infrastructure for hydrogen production that applies a renewable energy source in water electrolysis will be used, while the green hydrogen generated in the process of electrolysis will be stored in stationary tanks with an absorption-based storage system. A strategic objective of the project is to interconnect the system for green hydrogen production operated in the island mode, installed at the Centre for Hydrogen Technologies at the Faculty of Mechanical Engineering, with a system for stationary low-pressure hydrogen storage in metal hydrides, which will then facilitate refuelling mobile MH equipment using a newly developed prototype of a refuelling stand. An important milestone in the project is the research into a design of stationary tanks with an inbuilt thermal management system. Developing the thermal management system is crucial for operational safety and for increasing the efficiency of hydrogen storage while considering the overall reduction of energy consumption in the process of hydrogen absorption and subsequent desorption. The research of novel MH alloys, while respecting equilibrium pressures at predefined operating temperatures, is therefore a primary input parameter for designing the thermal management system. The use of MH alloys for increasing hydrogen pressure eliminates the risks related to the compression process when compared to mechanical compression. The thermal management system will also include a system for cooling hydrogen during refuelling; hence, reduction of the time of refuelling MH tanks for consumers will be verified. |
| Duration: | 1.7.2022 – 30.6.2025 |
| Vývoj a výskum vysokoentropických zliatin určených na efektívne uskladnenie vodíka | |
| Research and development of highentropy alloys for efficient hydrogen storage | |
| Program: | VEGA |
| Project leader: | doc. Ing. Saksl Karel, DrSc. |
| Annotation: | The aim of this project is the development and research of high-entropy alloys – HEA whose primary function will be in hydrogen storage. Commercial use of H2 relies on its efficient and safe storage. One of the most efficient ways to store H2 is chemically bond it to an alloy lattice in a form of metalhydrides. The TiVZrNbHf alloy is capable of storing far greater amounts of H2 up to 210 kg.m-3. The problem of the alloy is its relatively high density of 7.81 g.cm-3, for transport applications. Much higher mass storage capacities are expected to be achieved with other HEA, consisting of lighter elements. In the project, we will design, prepare and fully characterize a series of new HEA with a low density of <7 g.cm-3. Materials that meet the targets of absorption capacity (>2wt% and>220 kgH2/m3), low desorption temperature <140°C and high cyclic absorption/desorption stability (>1000 cycles with a capacity drop of less than 10%). In the project, we will use our knowledge and expertise in the design and preparation of HEA. |
| Duration: | 1.1.2022 – 31.12.2024 |
| NOVEMBER – Vývoj nových 3D materiálov pre post Li-iónové batérie s vysokou energetickou hustotou | |
| Development of novel 3D materials for post lithium ion batteries with high energy density | |
| Program: | SRDA |
| Project leader: | Ing. Ballóková Beáta, PhD. |
| Annotation: | The overall objective of NOVEMBER is to prepare and characterize new materials and concepts with self-healing functionalities integrated within the battery cell. These new composite 3-D materials will enable a variety of critical features including fail-safe and self-healing technologies to improve the battery performance, and greatly extended lifetimes. Special emphasis will be on in-operando electrochemical measurements using impedance spectroscopy and structural measurements. Validation of new materials will be done in small laboratory prototypes. This small prototypes are important in order to demonstrate scalability to battery cell production processes. To reach this goal, NOVEMBER has identified three specific objectives: 1. Development of novel high entropy oxides and sulfur based materials with self-healing functionalities. 2. Development of new physico-chemical in-operando techniques and solutions for monitoring of agign and degradation mechanisms 3. Validation and exploitation of the developed materials in prototypes. In summary, this project combines materials research advances and sophisticated in-operando technology development in order to obtain new materials for post Li -ion batteries with enhanced life-time and performances. |
| Duration: | 1.7.2021 – 31.12.2024 |
| HydroHEA – Výskum a vývoj nových vysokoentropických zliatin určených na efektívne uskladnenie vodíka v energetických aplikáciách | |
| Research and development of new high – entropy alloys for efficient hydrogen storage in energy applications | |
| Program: | SRDA |
| Project leader: | doc. Ing. Saksl Karel, DrSc. |
| Annotation: | The presented project aims to development and research of metal hydride materials of the latest generation – highentropyalloys, which report the highest volumetric storage capacity of hydrogen among all materials used so far.We intend to utilize these materials in metal hydride tanks of hydrogen compressors, which are being developed inSlovakia by the project cooperating organisation – FME TUKE.In June 2020, the European Commission presented the Union\’s hydrogen strategy, which states that hydrogen andthe hydrogen economy are among the key technologies for the future of industry in the EU.The presented project aims to meet the goal of efficient and safe hydrogen storage. Up to date studies show thehighest volumetric hydrogen storage capacity of 150 kg/m3, out of all conventional alloys, is reached by Mg2FeH6metal hydride. In 2016, Sahlberg et al. in a publication entitled "Superior hydrogen storage in high entropy alloys"confirmed that the high-entropy alloy TiVZrNbHf can store an incredible "superior" of 210 kg/m3 of hydrogen in itsstructure with a ratio of hydrogen atoms to metal (H / M) 2.5. However, the problem of the alloy is its relatively high density of 7.81 g/cm3, which makes it too high for transport applications. In the project, we will design, prepare andfully characterize a series of completely new high-entropy materials with a low density <7 g/cm3. Materials thatmeet the targets of absorption capacity (> 2 wt% and> 220 kg H2/m3), low desorption temperature (<140C) andhigh cyclic absorption / desorption stability (> 1000 cycles with capacity drop of less than 10%) we will patent. Thealloys will also be tested in a hydrogen compressor, which will undoubtedly contribute to the further evaluation ofthe outputs of this project. In the project we will use our long-term knowledge and expertise in the design,preparation and characterization of high-entropy alloys. |
| Duration: | 1.7.2021 – 30.6.2024 |
| BiAll-2 – Vývoj nových bioresorbovateľných zliatin pre vnútrotelové implantáty | |
| Development of new bioresorbable alloys for intracorporeal implants | |
| Program: | SRDA |
| Project leader: | Ing. Molčanová Zuzana, PhD. |
| Annotation: | The main goal of submitted project is to develop the new bioresorbable alloys Ca-Mg-Zn-NN and Ca-Mg-Sr-NNwith controlled rate of biodegradation (NN are solid solution strengthening and stabilizing elements). Developed alloys will be preferentially dedicated to fabrication of intracorporal implants for bone tissue engineering field. Members of project research team are highly focused on the investigation of these alloys systems since 2014. Essential and logical continuity of research activities are moving towards to experimental outputs into medical practice. However, this requires a large-scale investments of research capabilities to enhance the plastic deformability of alloys, while maintain their excellent strength properties and slow dissolution rate. Taking into account that healing of traumatic injuries needs different time of implant mechanical support, the great ambition of the project is to prepare alloys with possibility of controlling their dissolution rate. Another research point with hugepotential of success is handling and mastering of 3D printing of well -defined intracorporal implants from proposed alloys. One of the final research tasks will be in-vivo testing of implants dissolution in the environment of animals bone tissue and continuous monitoring of their degredation rate. Several state-of-the-art experimental techniques, such as HR-TEM microscopy or experiments using synchrotron and neutron diffraction techniques, will be used to study the atomic structure and microstructure of materials to meet the project objectives. Modern techniques of selective laser sintering and/or melting will be used for the production of final implants. The achieved outputs of the project research programme will be adapted by contracted private company Biomedical Engineering s.r.o. and displayed into clinical practice. |
| Duration: | 1.7.2021 – 30.6.2024 |
| THERMAGS – Termoelektrický materiál Ag2S ako ekologický konvektor tepla ľudského tela na elektrinu | |
| Thermoelectric material Ag2S as green converter of heat from human body into electricity | |
| Program: | SRDA |
| Project leader: | doc. Ing. Saksl Karel, DrSc. |
| Annotation: | A carbon neutral society demands the development of efficient and energy saving technologies. Efficient thermoelectric devices have great potential to convert the waste heat from power plants, automotive engines, andindustrial processes into fruitful electricity. Another natural source of heat is our body. As the heat released by the human body is given for “free” wearable renewable energy generators (or harvesters) have potential to trigger revolution in the electronics industry in 21st century. For example, bendable, scalable, portable, and lightweight thermoelectrics can in future sourced flexible displays, medical image sensors, smart wearables, and large-area epapers to name a few. To date, state-of-the-art thermoelectrics is based on inorganic semiconductors that afford high electron mobility but lack in mechanical flexibility. By contrast, organic materials are amply flexible but low in electrical mobility and power output; the inorganic-organic hybrid design is a viable material-level option but has critical device-level issues for practical application. In flexible full-inorganic devices made of such Ag2S-based materials, high electrical mobility yielded a normalized maximum power density up to 0.08 W•m-1 near room temperature under a temperature difference of 20 K, orders of magnitude higher than organic devices and organic-inorganic hybrid devices. These results promised an emerging paradigm and market of wearable thermoelectrics. |
| Duration: | 1.1.2022 – 31.12.2023 |
| REDHYBEAR – Výskum a vývoj energeticky úsporného hybridného ložiskového reduktora so zníženým opotrebením pre robotické zariadenia (pre Priemysel 4.0) | |
| Research and development of energy saving hybrid bearing reducer with lowered wear rate for robotic equipment (for Industry 4.0) | |
| Program: | SRDA |
| Project leader: | doc. RNDr. Hvizdoš Pavol, DrSc. |
| Duration: | 1.7.2019 – 30.6.2022 |
| VaTRsEDVFsOAM – Vývoj a testovanie respirátorov s efektívnou degradáciou vírusov filtrami s obsahom antivirotických materiálov | |
| Development and Testing of Respirators with Efficient Degradation of Viruses by Filters Containing Antiviral Materials | |
| Program: | SRDA |
| Project leader: | Ing. Ballóková Beáta, PhD. |
| Annotation: | In response to the situation resulting from the spread of the SARS-CoV-2 virus, the research and development performed at workplaces of the Faculty of Mechanical Engineering of the Technical University of Kosice has been partially transformed into research and development of special respirators and filtration materials. The submitted project is focussed on the development and construction of respirators with separable filters without exhalation valves which provide efficient protection against SARS-CoV-2 virus. The aim of the project is the investigation, development and production of respirators with separable filters and the testing of novel filtration materials. Designing and production of the respirator will be carried out while applying biomimetic and ergonomic principles and modern additive manufacturing technologies, and the production of multicomponent filters will be carried out while applying a combination of powder metallurgy technology and electrospinning which will facilitate combining metal filters and polymer nanofibres. Also, ceramic components produced by 3D printing will be used as a protective packaging of the used nanofibres and nanoparticles. In order to achieve the project objectives, it will be necessary to carry out the fundamental investigation of filtration efficiencies of the suggested materials with virucidal effects based on copper and ions of silver of zinc. The purpose of the project is to develop and construct testing systems intended for identification of resistance coefficients of newly developed filtration materials, filter permeability using a suitable aerosol, as well as mask penetration through the facepiece contact line. Optimisation of the shape of the respirator facepiece will be based on the analysis of biological parameters of at least 20 human facial scans; this will facilitate elimination of potential infection by particles escaping through the space around the mask. |
| Duration: | 16.9.2020 – 31.12.2021 |
| Vývoj nových biodegradovateľných kovových zliatin určených pre medicínske aplikácie | |
| Development of new biodegradable metal alloys for medical applications | |
| Program: | VEGA |
| Project leader: | doc. Ing. Saksl Karel, DrSc. |
| Annotation: | In the submitted project we would like to prepare and investigate ultralight amorphous alloys (metallic glasses) which will be produced only from bioabsorbable elements (Ca, Mg, Zn, Sr, Si, Zr and Li). These elements are present in the human body and they are naturally tolerated by the human body.These amorphous alloys are applied in the field of medicine to prepare intracorporeal implants with controlled dissolution in the body of a patient. During the project our research team will design a brand new amorphous alloys. We will perform analysis of their atomic structures, tests of thermal stability, critical casting thickness, mechanical properties, corrosion resistance in environment similar to the human body fluids and cytotoxicity of the osteoblastic cells on the alloys surface. During the evaluation of new alloys we use our knowledge in field of detail study of atomic structure upon highly disorered materials. |
| Duration: | 1.1.2019 – 31.12.2021 |
| BiAll – Vývoj nových biodegradovateľných kovových zliatin určených pre medicínske a protetické aplikácie | |
| Development of new biodegradable metal alloys for medical and prosthetic applications | |
| Program: | SRDA |
| Project leader: | doc. Ing. Saksl Karel, DrSc. |
| Annotation: | In the submitted project we aim to prepare and investigate ultralight amorphous alloys been made exclusively from bioabsorbable elements (Ca, Mg, Zn, Sr, Si, Zr, Li), existing in human body and to which the body has inherent tolerance. Applications of these materials are foreseen in the field of medicine – for implants with targeted dissolution in patient body. Metallic glasses based on bioresorbable chemical elements are interesting due to the unique combination of properties: very low density, Young’s modulus and hardness similar to human bones and toughness exeeding 300MPa. During the poject we will made series of new alloys not presented up to date on which we will characterise atomic structure, thermal stability in addition to functional properties as: mechanical, electrical conductivity, corrosion resistance in enviroments similar to human body solutions as well as cytotoxicity of the osteoblastic cells on their surfaces. Determination of atomic structure of highly disordered materials belongs to the most complicated experimentally theoretical procedures in materials research and in condensed matter physics. Within the project we plan to do also very ambitious experiments on X-ray free electron laser aiming to study dynamics of the solid state systems sampled in femtosecond timescales by X-ray photon correlation spectroscopy. Goals of this project are highly ambitious but achiavable will require application of the most sophisticated methods applied today in material research. The previous experiences of the research team proved by more than 70 scientific papers published in most prestigious scientific journals like Nature Physics, Physical Review Letters, Applied Physics Letters etc. we believe guarantees their fulfilment. |
| Duration: | 1.8.2018 – 30.6.2021 |
| VKaNMH – Vývoj zariadenia pre efektívnu kompresiu a uskladnenie vodíka pomocou nových metalhydridových zliatin | |
| Development equipment for efficient compression and storage of hydrogen using new metal hydride alloys | |
| Program: | SRDA |
| Project leader: | doc. Ing. Saksl Karel, DrSc. |
| Annotation: | The project aims to development of unique prototype devices at efficient compression of hydrogen using metal hydride storage tandem in conjunction with a heat pump. The development of device closely related to the research of thermal cycles hydrogen compressor utilizing metal-hydride alloys, which have a significant pressure gradients according to their temperature. The research of capacities of storage of selected types of metalhydride alloys is necessary to achieve effective hydrogen compression. The operating pressures should be respected at predefined acceptable operating temperatures. The output of the project is the development of a functional prototype of the tandem compressor to compress the hydrogen that will be to contain suitably used types of metal hydride alloys. Prototype development requires structural design of the heat pump system, serving to transport heat between reservoirs and optimize the management with the creation of an algorithm for increase effectiveness. The application organization long-term cooperates with businesses in research of hydrogen technologies and their utilization in the automotive and energy industries. In the case of confirmation of theoretical assumptions, technology of research replaces today existing technology certainly. The researching technologies have a number of crucial advantages such as lower energy consumption, simpler and more compact design, saving on installation space, lower estimated cost, significantly lower service costs in achieving longer life and high standards of safety by avoiding contact with the moving parts of the system with compressed hydrogen. Development of hydrogen compressor has great potential for innovation needs of social and economic practice in the development and application of hydrogen technologies in the automotive industry and transport, especially in the context of Slovak European innovation strategy. |
| Duration: | 1.7.2016 – 30.6.2019 |
| Vývoj a výskum kovových skiel a nanokryštalických materiálov | |
| Development and research on metallic glasses and nanocrystalline materials | |
| Program: | VEGA |
| Project leader: | doc. Ing. Saksl Karel, DrSc. |
| Duration: | 1.1.2016 – 31.12.2018 |
| SVE-Sn – Vývoj novej generácie spojov výkonovej elektroniky s použitím neštandardných zliatin na báze cínu | |
| Development of new generation joints of power electronics using nonsandard Sn-based alloys | |
| Program: | SRDA |
| Project leader: | doc. Ing. Saksl Karel, DrSc. |
| Annotation: | The aim of the proposed project is to develop new types of nonstandard lead-free solder alloys based on Sn with different content of intermetallic compounds, and to develop new generation of quality solder joints as well as a functioning testing electronic module in the field of power electronics. A detailed study on solder joints in power electronics has not yet been performed and it represents an entirely new approach, since as a solder alloy there is an alloy with different content of intermetallic compounds prepared by a rapid cooling method. In the newgeneration of solder joints based on alloys with standard composition and high content of intermetallic compounds, using the process of isothermal solidification, the major potential lies in their temperature resistance at least until 200°C. Future results of functioning testing electronic module as well as the results of thermomechanical stress simulation, comparative analysis of electrical and mechanical properties, and microstructure of joints, will be confronted with the results of a comprehensive analysis of the developed solder alloys and intermetallic compounds. As a guarantee of the proposed project fulfillment, there is a previous experience of the research team in the area of electrotechnologies and materials, and intensive cooperation with an industrial partner which is a client of the project. Development of the new generation of solder joints in power electronics will find its direct use in the industrial production as well as in many other clients. |
| Duration: | 1.7.2015 – 30.6.2018 |
| Štúdium štruktúry a teplotnej stability kovových skiel a nanokryštalických materiálov. | |
| Study of microstructure and thermal stability of metallic glasses and nanocrystalline materials | |
| Program: | VEGA |
| Project leader: | Ing. Ďurišin Juraj, CSc. |
| Annotation: | Project is oriented on study microstructure and thermal stability of the selected metallic alloys with disorderedstructure. One group will be alloys with high disordered structure in particular metallic glasses based on Zr. Thesecond group will be materials which structure is partially disordered, dispersion strengthened nanocrystallinecomposites based on Cu and Al. Macro and microstructure, thermal stability and local mechanical properties ofthese materials will be characterized by means of standard methods applicable in material science: opticalmicroscopy, scanning electron microscopy, transmission electron microscopy, simultaneous thermal analysis,X-ray diffraction, micro and nanoindentation. Atomic structure and thermal stability of the metallic glasses will becomplexly characterized. Experimental data will be obtained by advanced techniques like: high energy X-raydiffraction, X-ray absorption spectroscopy measured at absorption edges of elements present in the sampleand/or neutron diffraction |
| Duration: | 1.1.2013 – 31.12.2015 |
| BIMETAL – Štúdium zvarov a tepelne ovplyvnených zón bimetalov | |
| Study of welds and heat effected zones of bimetals | |
| Program: | SRDA |
| Project leader: | doc. Ing. Saksl Karel, DrSc. |
| Annotation: | The main aim of the presented project are consultations of reached results of welds analysesand heat influenced zones of industrially and explosively welded bimetals by use of X-raydiffraction utilizing synchrotron source and comparison of our results from light and electronmicroscopy (SEM) with results obtained in the ÚMV SAV Košice. Czech side could realisemechanical tests (fatigue, hydrogen induced cracking, light microscopy and basic fracturesurfaces evaluation and structural phases using SEM). The Slovak side could first of all securenon-destructive material evaluation, then welds (analyses using synchrotron, transmissionelectron microscopy, EBSD and X-ray diffraction). From mechanical tests the ÚMV SAV Košice would be focused on local mechanical properties. During solution experiences from field which have had a long time tradition on both sides would be exchange. Two material types (Ti + anticorrosion steel and Ti + C-Mn steel) after two heat treatment ways and tested at two fatigue life time types and evaluated on hydrogen response (hydrogen induced cracking, then HIC according NACE Standart TM 0284-2011) would be taken into consideration. |
| Duration: | 1.1.2015 – 31.12.2015 |
| Štruktúrna stabilita nanokryštalických kovových materiálov pripravených progresívnou práškovou technológiou | |
| Structure stability of nanocrystalline metal materials prepared by progressive powder technology | |
| Program: | VEGA |
| Project leader: | Ing. Ďurišin Juraj, CSc. |
| Annotation: | Creation and development of the ultrafine structured powders with metallic matrix and secondary phase, preparedby progressive technology based on mechano-chemical processes combining phase transformation, refinementof a matrix and homogenization of secondary phase in one operation. Analysis of dispersed particles, theirinfluence on the powder nanostructure thermal stabilization, suppression of fast grain coarsening during sinteringprocess as well as at the straining material at high temperatures. Analysis of particle/matrix interfaces in the lightof effective mechanism of grain boundaries strengthening. Elucidation of the mechanisms among the production,microstructure and microhardness at bulk nanocrystalline materials designed for high-temperature applications. |
| Duration: | 1.1.2010 – 31.12.2012 |
| Štúdium štruktúry nanokryštalických disperzne spevnených materiálov s kovovou matricou | |
| Microstructural study of nanocrystaline, dispersion strengthened metal matrix materials | |
| Program: | VEGA |
| Project leader: | Ing. Ďurišin Juraj, CSc. |
| Duration: | 1.1.2007 – 31.12.2009 |