Hard and electrically conductive multicomponent diboride-based films with high thermal stability

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F22%3A43962995" target="_blank" >RIV/49777513:23520/22:43962995 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.ceramint.2021.09.131" target="_blank" >https://doi.org/10.1016/j.ceramint.2021.09.131</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ceramint.2021.09.131" target="_blank" >10.1016/j.ceramint.2021.09.131</a>

Result language
angličtina
Original language name
Hard and electrically conductive multicomponent diboride-based films with high thermal stability
Original language description
We report high-quality, hard (31–41 GPa), crack-resistant (hardness-to-effective Young's modulus ratio of 0.13–0.16) and electrically conductive (2.8–4.2 × 10^5 S/m) HfB2 based thin-film ceramic materials with high thermal stability. We go through a wide range of compositions resulting from incorporating five other metals (Ti, Y, Zr, Ho or Ta) which partially replace Hf, and focus on the effect of the number and characteristics of elements in the metal sublattice. Growing number of metal elements leads to decreasing crystal size as indicated by the width of diffraction peaks, strongly decreasing compressive stress to less than 2 GPa and slightly decreasing hardness and electrical conductivity. The thermal stability of septenary diboride-based films Hf8Zr4Ti4Ta4Y5B60C9 and Hf10Zr4Ti4Ta4Ho5B58C9 was superior to that of quaternary films Hf22Y5B58C9 and Hf22Ho5B58C9 when annealed to 1300 °C. The results are important for the design and industry-friendly preparation of thin-film materials combining multiple functional properties for various technological applications.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20506 - Coating and films

Project
<a href="/en/project/GA19-14011S" target="_blank" >GA19-14011S: Design of novel functional materials, and pathways for their reactive magnetron sputtering, using advanced computer simulations</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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