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| Keramické kompozitné materiály na báze SiC s vysokou tepelnou vodivosťou | |
| Silicon carbide ceramic composite materials with high thermal conductivity | |
| Program: | VEGA |
| Project leader: | Ing. Hanzel Ondrej, PhD. |
| Annotation: | The main goal of this project is preparation of dense silicon carbide (SiC) ceramics without sintering additives and/or silicon carbide composites with very low content (up to 1 wt. %) of sintering additives (oxides of rare-earth elements), with high thermal conductivity. The research will be focus on study of the effect of a-SiC and ß-SiC phase content on thermal conductivity of silicon carbide without sintering additives and the second research direction will be focus on study of the effect of amount and type of additives (oxides of rare-earth elements) on the thermal conductivity of SiC composites. In order to achieve project objectives, research focused on preparation of dense silicon carbide or SiC composite at relatively low sintering temperature (up to 2000°C) will be necessary. This process comprises study of SiC powders or SiC composite powders modification by freeze granulator, thermal annealing of granulated powders and followed by granules sintering with field assisted sintering technology (FAST). |
| Duration: | 1.1.2025 – 31.12.2028 |
| TESLOW – Základ k ekologicky udržateľným sodíkovo-iónovým batériám pre nízko nákladovú technológiu | |
| Towards Eco-sustainable Sodium-ion batteries for a LOW-cost technology | |
| Program: | SRDA |
| Project leader: | doc. Ing. Lenčéš Zoltán, PhD. |
| Duration: | 1.7.2024 – 30.6.2028 |
| Nová generácia termoelektrických materiálov pre udržateľnú energiu | |
| Next Generation Thermoelectrics for Sustainable Energy | |
| Program: | Plán obnovy EÚ |
| Project leader: | Ing. Tatarko Peter, PhD. |
| Annotation: | The aim of the project is to build up a new excellent research team with the state-of-the-art infrastructure to design and develop new generation thermoelectric materials with significantly improved efficiency of energy conversion. The project proposes a unique and innovative approach to design new entropy stabilised perovskite oxides to generate new significant knowledge and understanding of the effect of multi-principal elements doping at both A- and B-sites of ABO3 perovskite structures on their thermoelectric performance. In addition, the effect of non-equimolar multi-principal elements doping on thermoelectric properties of perovskite oxides will be investigated for the first time. The project also proposes a new strategy in manufacturing of perovskite oxides to further improve their thermoelectric performance by the combination of entropy stabilisation approach with the nanostructuring design and vacancies formation approaches. The proposed methodology and approach will significantly contribute to the ongoing effort to reach a climate neutral Europe by 2050. |
| Duration: | 1.4.2024 – 30.6.2026 |
| ComCer – Vývoj nových keramických materiálov komplexného zloženia pre extrémne aplikácie | |
| Development of new compositionally-complex ceramics for extreme applications | |
| Program: | SRDA |
| Project leader: | Ing. Tatarko Peter, PhD. |
| Annotation: | The main aim of the proposed project is to develop next generation ultra-high temperature ceramics capable of withstanding temperatures up to 3000°C for propulsion systems, rocket engines and other aerospace applications. This will be achieved by the synthesis of diboride ceramics with unique compositionally -complex structures, comprising of at least five metal elements. A systematic study will be conducted to generate new knowledge on the understanding of the effect of various molar ratios of individual metal cations in diboride structures on the stability, synthesis, sintering and mechanical properties of bulk diboride ceramics. The results will significantly contribute to the expansion of the high entropy ceramics concept with equimolar compositions towards the development of compositionally-complex ceramics with non-equimolar compositions. The project also proposes an innovative way of manufacturing ultra-high temperature ceramics, consisting of the development of ceramic composites based on the high-entropy and compositionally-complex diboride matrix, reinforced with the refractory additives. The output of the project will be new fundamental knowledge on the formation of disordered diboride structures, and their effect on mechanical properties of the materials at room, intermediate, and ultra-high temperatures. |
| Duration: | 1.7.2022 – 30.6.2026 |