Combined synthesis from powders of elements B, C, and Si at 1400, 1500, and 1650°C is used to prepare heterophase powders in the system SiC–B4C containing 80, 57, and 30 (mol.%) boron carbide. Powders containing only SiC and B4C phases are prepared at 1550°C from a mixture with 5% excess silicon given vibration grinding for 60 h. The powder has a unimodal particle size distribution and d 50 = 3.5 μm with a volume concentration of 12% submicron particles.
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Research was carried out with financial support of the RFFI within the scope of scientific project No. 14-03-00501A.
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Translated from Novye Ogneupory, No. 10, pp. 37 – 41, October, 2016.
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Nesmelov, D.D., Vlasova, E.A. & Ordan’yan, S.S. Combined Elemental Synthesis of Boron and Silicon Carbides. Refract Ind Ceram 57, 531–535 (2017). https://doi.org/10.1007/s11148-017-0018-y
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DOI: https://doi.org/10.1007/s11148-017-0018-y