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Year 2020 Volume 18, Issue 2 |
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Issues/2020/vol. 18 /Issue 2 |
I. V. Kud, L. I. Ieremenko, L. À. Krushynska, D. P. Zyatkevych, Î. B. Zgalat-Lozynskyy, R. V. Lytvyn, Î. V. Myslyvchenko
«Mechanochemical Synthesis of Nanopowders of Boride–Silicide Compositions»
393–402 (2020)
PACS numbers: 61.05.cp, 61.43.Gt, 68.37.Lp, 81.05.Je, 81.07.Wx, 81.20.Wk
Experimental results of an investigation of the mechanochemical synthesis of composite powder of the TiB\(_2\)–MoSi\(_2\) system in a wide concentration range with a MoSi\(_2\) content of 20-60 mass.% are presented. As shown, it is impossible to obtain a two-phase TiB\(_2\)–MoSi\(_2\) composite powder during mechanosynthesis of multicomponent (Ti + B + Mo + Si) reaction mixtures in the concentration range 40-80 mass.% TiB\(_2\), and the final product is a mixture of the following phases: the solid solution (Ti,Ìî)B\(_2\), Mo\(_3\)Si, Mo\(_5\)Si3, MoB\(_2\). For the (Ti + B + MoSi\(_2\)) reaction mixture, a two-phase composite powder (TiB\(_2\) and MoSi\(_2\)) forms within 30 min at the ball-to-powder mass ratio 10:1. The results of mathematical modelling of the distribution of contacts between powder particles of the reaction mixtures agree well with the experimental results of mechanosynthesis.
Keywords: mechanosynthesis, composite powders, titanium boride, molybdenum disilicide, contacts, mathematical modelling
https://doi.org/10.15407/nnn.18.02.393
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