Hardness of Re-, Ru-, Os-based borides and metal substituted aluminum diborides of MgB.sub.2./sub. type M.sub.0.5./sub.Al.sub.0.5./sub.B.sub.2./sub.

0519069 - FZÚ 2020 RIV GB eng J - Journal Article
Šimůnek, Antonín - Dušek, Michal
Hardness of Re-, Ru-, Os-based borides and metal substituted aluminum diborides of MgB₂ type M_0.5Al_0.5B₂.
International Journal of Refractory Metals & Hard Materials. Roč. 82, Aug (2019), s. 110-112. ISSN 0263-4368. E-ISSN 2213-3917
R&D Projects: GA MŠMT(CZ) LO1603
Institutional support: RVO:68378271
Keywords : hardness * microscopic model * transition metal borides * metal substituted aluminum diborides * mechanical properties
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.407, year: 2019
Method of publishing: Limited access
https://doi.org/10.1016/j.ijrmhm.2019.04.001

A generalized bond-strength model of hardness was applied to of Re3B, Re7B3, ReB2, Ru7B3, RuB, Ru2B3, RuB2, OsB, Os2B3, OsB2, and metal substituted aluminum diborides of MgB2 type M0.5A10.5B2 (M=Li, Na, Mg, K, Ca, Sc, Ti, V, Y, Zr, Nb, Mo, Tc, Ru, Hf, Ta, W, Re, and Os). The resulting hardness of transition metal borides was found to be within the range of 14.3–28.2 GPa, and metal substituted aluminum diborides 7.2–21.1 GPa. Comparing the results with other semiempirical results and available experimental data shows the applicability of different methods.
Permanent Link: http://hdl.handle.net/11104/0304090