Abstract
The paper experimentally demonstrates the possibility of synthesizing cast W–C–Ni composite materials (CMs) by SHS metallurgy from highly exothermic mixtures based on WO3 and NiO oxides and a complex reducing agent consisting of Al, Ca, and graphite at an elevated gas (nitrogen) pressure. It is shown that by varying the WO3 and NiO ratio, the initial mixtures of the contents of carbon, aluminum, and calcium retain the ability to burn in a wide range of values, and the combustion temperature exceeds the melting temperature of the composite and slag (oxide) combustion products. Under the action of gravity there is a separation of the melts of the CM and slag; and with subsequent cooling, the formation of their structure. This paper studies the laws of combustion of mixtures, gravitational separation of combustion products, and the formation of their composition and structure.
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Silyakov, S.L., Yukhvid, V.I., Khomenko, N.Y. et al. Synthesis of Casting Composite Materials Based on Tungsten Carbides with Nickel Binding by the SHS Metallurgy Method. Russ. J. Phys. Chem. B 14, 847–852 (2020). https://doi.org/10.1134/S1990793120050115
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DOI: https://doi.org/10.1134/S1990793120050115