Nanosized composite powders with a composition of titanium diboride–silicides of group IV–VI transition metals are obtained in boride–silicide systems by mechanochemical synthesis for 5–30 min. The initiation effect of TiB2 on the formation of silicide phases during joint mechanochemical synthesis is shown. It is established that the powder particles are 40–70 nm in size. The powders tend to agglomerating. The properties of hot-pressed compacted TiB2–20 wt.% MoSi2 samples are studied: ultimate bending strength 421 ± 29 MPa; microhardness 25 ± 0.8 GPa. Electrolytic Ni–TiB2–MoSi2 coating possesses high wear-resistance in sliding friction and can be recommended for hardening and recovering the surfaces of machinery and mechanical parts.
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Translated from Poroshkovaya Metallurgiya, Vol. 56, Nos. 9–10 (517), pp. 3–13, 2017.
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Makarenko, G.N., Krushinska, L.A., Timofeeva, I.I. et al. Highly Dispersed Powders in Boride–Silicide Systems. Powder Metall Met Ceram 56, 487–495 (2018). https://doi.org/10.1007/s11106-018-9920-1
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DOI: https://doi.org/10.1007/s11106-018-9920-1