Multicomponent boride and nitride coatings for ultrahigh temperature applications
| Acronym: | Mi-COAT |
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| Project start: | 01.08.2018 |
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| Project end: | 30.06.2021 |
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| Programme: | APVV |
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| Project number: | APVV-17-0320 |
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| Institute position in the project: | Partner |
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| Project leader at the institute: | Marián Mikula |
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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.