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The list of national projects SAS

Institute of Materials Research
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
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 accurate diagnosis is limiting for quick patient identification, assessment of his contacts and timely epidemiological intervention. Affordability is also a condition for quick diagnostics. Therefore, the present project deals with basic research aimed at the development of an electrochemical sensor that is able to efficiently and quickly detect the presence of the virus in biological fluids. Our goal is to study suitable electrode materials for the electrochemical sensors development that would be able not only qualitatively but also quantitatively to determine the amount of virus particles in a sample. The use of these sensors will ensure fast detection (bed side test), low consumption of materials needed for detection, elimination of the use of instrumental and time-consuming methods, allow patients to 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 of electrode materials with a specific composition and morphology. One of the main benefits will be developed.
Duration: 16.9.2020 - 31.12.2021
Injectable hybrid composite biocements
Injektovateľné hybridné kompozitné biocementy
Program: SRDA
Project leader: Ing. Medvecký Ľubomír PhD.
Annotation:Project is focused on synthesis, preparation and characterization of modified and novel types of injectable hybrid biocements with high bioactivity, structure and chemical biocompatibility with required properties for medical applications. Above biomaterials will have widely utilization in orthopeadics (therapy of bone defects and fractures, 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
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 PhD.
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 features impede 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 viscosity characteristics of cement pastes. The intention is that the addition of colloidal SiO2 will contribute to a faster transformation 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 have enhanced 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
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Morepro
Program:
Project leader: Ing. Bureš Radovan CSc.
Duration: 15.10.2020 - 14.10.2023
Multicomponent boride and nitride coatings for ultrahigh temperature applications
Multikomponentné boridové a nitridové PVD povlaky pre ultravysokoteplotné aplikácie
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 nitrides and borides with stable structure and excellent mechanical properties up to temperatures approaching 1500°C and deposited by the novel deposition methods of highly ionized magnetron sputtering. The main idea is the development of hard high temperature multicomponent nanocomposite coatings originating from the solid solutions of ternary systems Ti-Al-N, Cr-Al-N, Ta-Al-N, V-Mo-N, TiB2, Ti-B-N, CrB2, TaB2, etc. by doping by additional transition metals with high melting temperatures (Zr, Hf, Ta, Nb, V, Mo, W, Y, etc.). The main objective of work, which is a logical continuation of the previous APVV-14-173 project, is the increase of the temperatures of the coating structure stability and degradation of mechanical properties well above 1000 oC by means of the understanding of the mechanisms of nanostructure formation and decomposition in the high entropy multicomponent solid solutions deposited by novel deposition technologies. The experimental Works will be supported by theoretical ab initio predictions.
Duration: 1.8.2018 - 30.6.2021
Nanocomposite material for balistic protection
Nanokompozitný materiál pre balistickú ochranu
Program: Other projects
Project leader: Ing. Puchý Viktor PhD.
Duration: 1.5.2019 - 31.8.2021
Novel glass and glass-ceramic rare-earth aluminates-based phosphors for energy-saving solid state lighting sources emitting white light (pc-WLEDs).
Nové sklené a sklokeramické fosfory na báze hlinitanov vzácnych zemín pre aplikácie v pevnolátkových energiu šetriacich svetelných zdrojoch vyžarujúcich biele svetlo (pc-WLED diódy).
Program: SRDA
Project leader: doc. RNDr. Lofaj František DrSc.
Annotation:The project is focused on research and development of novel glass and glass-ceramic rare-earth aluminatesbased luminescent materials for white light-emitting diodes (pc-WLED), especially materials with efficient red emission, which could improve CRI index compared to the known commercially produced phosphors. Phosphors will be prepared in the form of glass microbeads. The structure of undoped alumninate glasses in the system Al2O3-RE2O3 will be studied by spectroscopic methods. Thermal properties and kinetics of crystallization will be also studied. In order to preparer glass-ceramics materials with required properties, the conditions of crystallization process will be investigated and optimized. Photoluminescence properties of glass and glassceramic rare-earth and transition metal ions doped materials will be studied in detail. Special attention will be paid to study of relations between luminescent properties of materials and their structure and morphology. In final stage of the project, the composite PiG materials (Phosphor in Glass) will be prepared and characterized as thin plates suitable for direct application onto excitation LED chip. A LED diode emitting white light/warm white light will be contracted using the LED chip with suitable excitation wavelength in the NUV spectral range and prepared PiG composite with optimised thickness, so that optimal emission characteristic will be achieved.
Duration: 1.8.2018 - 31.7.2022
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Nové vysokoentropické keramické materiály pre pokročilé aplikácie
Program: SRDA
Project leader: prof. RNDr. Dusza Ján DrSc.
Duration: 1.8.2020 - 31.7.2022
Prediction of weldability and formability for laser welded tailored blanks made of combined high strength steels with CAE support
Predikcia zvariteľnosti a lisovateľnosti kombinovaných laserom zváraných prístrihov z vysokopevných ocelí s podporou CAE systémov
Program: VEGA
Project leader: Ing. Kepič Ján PhD.
Annotation:The aim of the project is to verify the virtual engineering techniques when design and production of prototypes of molds and dies for the production of thin-walled automotive components from tailored laser welded blanks. Based on the results obtained on physical models of selected thin-walled car components, applied CAD/CAE/CAM techniques will be verified. The core of the project consist of CAE analyses and predictions of laser welds microstructure, weldability and formability of laser welded blanks made of combined steels. Verified methodologies for the weldability and the formability prediction should contribute to include more knowledge and less material when design thin-walled car-body components. Thus, low emissions at car operation is reached, production time shortening and production costs decrease as well.
Duration: 1.1.2019 - 31.12.2022
Re-evaluation of the effect of intermetallic phase on embrittling processes of creep-resistant steels
Prehodnotenie vplyvu intermetalickej fázy na procesy krehnutia žiarupevných ocelí
Program: VEGA
Project leader: Ing. Falat Ladislav PhD.
Annotation:The project intention is to investigate the effect of intermetallic Laves phase in thermally exposed 9Cr creep-resistant steels on degradation of their mechanical and brittle-fracture properties. Microstructure evolution aimed at kinetics of precipitation and coarsening of Laves phase will be studied in dependence of the conditions of initial heat treatment. Apart from comparison of the properties of long-term thermally exposed states (i.e. with presence of Laves phase) with the properties of initial material states without long-term thermal exposition (i.e. without Laves phase), the key task will be the study of the effect of supplemental heat treatment of thermally-exposed states (without notable effect on Laves phase precipitation/coarsening) on potential modification of the properties of creep-resistant steels. The main aim of the project is to re-evaluate and eventually complete up-to now generally accepted opinion on the Laves phase considered as the main embrittling factor in creep-resistant steels.
Duration: 1.1.2019 - 31.12.2021
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 on lanthanides (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 mixed EuxTbyGdz-MOF system by solvothermal method from precursors deposited on silicon substrates by spin-coating method. Determination of concentration effect of acetate agent as modulator in reducing particle size of 3D structure will help to clarify the mechanism of phase transformations occurring in films in the heating process. 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 generating white light. The results could help to contribute the knowledge about porous films in terms of their possible application as sensors in the electrotechnical industry.
Duration: 1.1.2020 - 31.12.2022
Preparation and development of nanocrystalline Cu-based composite for high-temperature applications
Príprava a vývoj nanokryštalického kompozitu na báze Cu určeného pre vysokoteplotné aplikácie
Program: VEGA
Project leader: doc. Ing. Milkovič Ondrej PhD.
Duration: 1.1.2019 - 31.12.2021
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 very good 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
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Progresívne metódy prípravy modifikovaných uhlíkových vlákien pre efektívny vývoj vodíka
Program:
Project leader: Mgr. Hečková Mária
Duration: 1.1.2020 - 30.6.2021
Investigation of phenomena induced by electron beam and electromagnetic radiation in chalcogenide glasses
Štúdium procesov vyvolaných elektrónovým zväzkom a elektromagnetickým žiarením v chalkogenidových sklách
Program: SRDA
Project leader: doc. RNDr. Lofaj František DrSc.
Annotation:e-CHALCO project aims to study the interaction of the electron beam and electromagnetic radiation with surfaces of thin films from chalcogenide glasses. In this area, we have reported recently results that lead to fundamental understanding of the phenomena induced by local interaction of electric charge and electromagnetic radiation with these materials. In this project, we plan to continue in more systematic and deeper study of the effects induced during local perturbation of these materials, which can lead to local deformation, change in the chemical composition, phase transitions and charge persistence and accumulation using the latest microscopic, spectroscopic and diffraction techniques. We also focus on the investigation of influence of experimental parameters such as charge deposition lattice period, accelerating voltage, layer thickness, and composition of glass for the observed effects. Opportunities to prepare mesoscopic and nanoscopic structures will lead to new applications of these materials in nanotechnology, for example, in fabrication of nanoemitters, in catalysis and in fabrication of probes for scanning probe microscopy and in technologies for recording and storing information.
Duration: 1.8.2018 - 31.7.2022
Double-oriented electrical steels with high and isotropic magnetic induction.
Textúrne dvojito orientované elektrotechnické ocele s vysokou, izotrópnou indukciou.
Program: VEGA
Project leader: RNDr. Kováč František CSc.
Annotation:The project is a goal-oriented on the development of isotropic electrical steels with high induction. The idea of the project is based on the increase of cubic texture intensity and the control of the Goss texture component in the sheet plane. The mentioned crystallographic texture will be achieved by columnar grains growth via the mechanisms of diffusion-controlled and deformation-induced grain boundary motion. The intensity of the cubic texture component will be increased from sub-surface region to the central part. At the same time the high intensity of the deformation component (111) [0vw] will be eliminated at the middle part of steel. Such a microstructural and textural state will be the basis for the isotropy of magnetic properties at a relatively low losses and a high isotropy of magnetic induction. The output of the project will be not only the acquired knowledge in field of basic research, also will be proposed a technological process for the preparation of such a microstructure.
Duration: 1.1.2019 - 31.12.2021
Multicomponent high entropy ceramic coatings prepared by ionized sputtering (HECC)
Viackomponentné keramické povlaky s vysokou entropiou pripravené iónovým naprašovaním
Program: VEGA
Project leader: doc. RNDr. Lofaj František DrSc.
Annotation:The proposed project deals with the understanding of the processes of structure development of novel multicomponent ceramic coatings with high entropy and extraordinary high temperature properties during deposition by HiPIMS a HiTUS sputtering methods with the aim to determine the relationships among deposition conditions and final properties of coatings and their control to improve coating properties at high temperatures. The basis for the preparation of ceramic coatings will be quaternary and more-component high entropy systems based on Hf, Zr, Ta and Nb metals from which high entropy nitride, carbide or boride coatings will be deposited using reactive sputtering in the Ar atmosphere with nitrogen, hydrocarbons or boron co-deposition, respectively.
Duration: 1.1.2019 - 31.12.2021
Effect of continual and pulsating fluid jet on microstructure, properties and integrity on materials
Vplyv kontinuálneho a pulzujúceho kvapalinového prúdu na mikroštruktúru, vlastnosti a integritu v materiáloch.
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
Research and development of energy saving hybrid bearing reducer with lowered wear rate for robotic equipment (for Industry 4.0)
Výskum a vývoj energeticky úsporného hybridného ložiskového reduktora so zníženým opotrebením pre robotické zariadenia (pre Priemysel 4.0)
Program: SRDA
Project leader: doc. RNDr. Hvizdoš Pavol DrSc.
Duration: 1.7.2019 - 30.6.2022
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:
Project leader: Ing. Medvecký Ľubomír PhD.
Duration: 15.12.2018 - 14.12.2021
High-temperature properties of diboride MeB2 (Me = Ti, Zr, Hf) ceramic composite materials
Vysokoteplotné vlastnosti boridových MeB2 (Me = Ti, Zr, Hf) keramických kompozitných materiálov
Program: VEGA
Project leader: Ing. Kovalčíková Alexandra PhD.
Duration: 1.1.2020 - 31.12.2022
Development and testing of respirators with efficient degradation of viruses by filters containing antiviral materials
Vývoj a testovanie respirátorov s efektívnou degradáciou vírusov filtra s obsahom antivirotických materiálov
Program: SRDA
Project leader: Ing. Saksl Karel DrSc.
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
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 potential to 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 an economically significant resource with an exceptional energy potential. The project is devoted to the preparation of new catalysts for the effective hydrogen evolution from water. The porous carbon fibers modified with metallic nanoparticles and metallic phosphide nanoparticles will be prepared by needle-less elektrospinning technology from the free surface of polymers, to catalyze the production of hydrogen at low overpotential.The outcomes of the project will be design of a compact electrode composed of modified carbon fibers that would effectively catalyse hydrogen evolution.
Duration: 1.1.2020 - 31.12.2022
Development of new biodegradable metal alloys for medical and prosthetic applications
Vývoj nových biodegradovateľných kovových zliatin určených pre medicínske a protetické aplikácie
Program: SRDA
Project leader: 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
Development of new biodegradable metal alloys for medical applications
Vývoj nových biodegradovateľných kovových zliatin určených pre medicínske aplikácie
Program: VEGA
Project leader: 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
Development of progressive dispersion-reinforced metal matrix composites prepared by pulsed electric current sintering
Vývoj progresívnych disperzne spevnených kompozitov s kovovou matricou pripravených spekaním pomocou pulzného elektrického prúdu
Program: VEGA
Project leader: Ing. Puchý Viktor PhD.
Duration: 1.1.2020 - 31.12.2022
Developmnt of REBCO superconductors for biomedical applicatios
Vývoj REBCO supravodičov pre biomedicínske aplikácie
Program: SRDA
Project leader: prof. RNDr. Dusza Ján DrSc.
Duration: 1.8.2018 - 30.6.2022
Development of high-alloy isotropic electrical steels for traction engines of electric vehicles
Vývoj vysoko-legovaných izotrópnych elektro ocelí pre trakčné motory elektromobilov
Program: SRDA
Project leader: RNDr. Kováč František CSc.
Annotation:In this project, for the production of high strength electrical steel type “finish”, we aim to propose an original concept of chemical composition and microstructural design with the desirable crystallographic texture which would be provided a combination of excellent electro-magnetic and high strength properties. The strength properties will be provided by high alloying of steels which are based on substituents elements with Si content from 3 to 3,5 wt.%, Al content from 0,5 to 1,5 wt.%, Cu content up to 0,5 wt.%, and P content up 0,10 wt.%. The low value of watt losses and high level of magnetic induction will be achieved by means of coarse-grained columnar or coarse-grained equiaxial microstructure with average grain size in the range from 150 to 300μm and with increased intensity of cube and Goss texture components at the expense of deformation texture. The evolution of the final microstructure will be based on the use of the strain-induced growth of ferrite grains through the thickness of the sheet from its surface to the central part. At the same time, we want to eliminate the liability to the brittle failure of materials during the cold rolling. It will be realised by optimization of previous thermal deformation exposures in the hot rolling process as well as optimization of deformation process of cold rolling with "tailor-made" parameters of rolled steel.The development steel will be used in traction engines of electric vehicles and in high-speed electric motors with high requirement for the power.
Duration: 1.7.2019 - 30.6.2022
Development of refractory pyrochlore phases for high temperature applications of non-oxide ceramics
Vývoj žiaruvzdorných pyrochlórnych fáz pre vysokoteplotné aplikácie neeoxidovej keramiky
Program: SRDA
Project leader: prof. RNDr. Dusza Ján DrSc.
Duration: 1.7.2018 - 30.6.2022
Increasing the efficiency of forming and joining parts of hybrid car bodies
Zvyšovanie efektívnosti lisovania a spájania dielov hybridných karosérií
Program: SRDA
Project leader: RNDr. Džupon Miroslav PhD.
Annotation:Nowadays, there is a characteristic continual pressure on the emission reduction produced by the cars. One possible way to reduce the amount of emissions produced by the automobiles is the reduction of the body weight. The weight of the automobile could be reduced through the hybrid car body, which consists of different materials based on the light alloys, composite materials and high-strength steel sheets. Solutions related to such hybrid car body designs must be addressed in to the forming, but also to the joining of the individual parts of such multi-material conception. The aim of the project is the optimization of the forming conditions of aluminium alloy sheets and high-strength steel sheets to increase the process efficiency. The appropriate joining technique will be proposed based on the results of the analyses of the stress-strain states of the formed parts. A comparison of strength and load-bearing capacity of the joints after different intensity of deformation and stressstrain states will be the assumed result. Effective and innovative methods of joining of aluminium and highstrength steel sheets after different intensity of deformation and stress-strain states will be assessed. The results obtained from the optimization of the joining process of the materials made of ferrous and non-ferrous metals will allow the strength of joints to be increased.
Duration: 1.7.2018 - 31.12.2021

The total number of projects: 32