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  5. Gadzyra M.
  6. Article

FEATURES OF STRUCTURIZATION OF REACTION-SINTERED SILICON CARBIDE MODIFIED BY CHROMIUM CARBIDE

M.Pinchuk,
 
M.Gadzyra
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2019, #11/12
http://www.materials.kiev.ua/article/3007

Abstract

The phase composition of reaction-sintered silicon carbide (RSSC) modified by chromium carbide is examined and the features of its structurization are determined. When hexagonal silicon carbide is used, the modification of RSSC by chromium carbide stabilizes the cubic lattice of secondary silicon carbide. A solid solution of silicon is formed in chromium carbide in the impregnation process. In the impregnation of porous samples, silicon influences the consolidation of chromium carbide particles since chromium carbide particles are displaced by liquid silicon. Depending on the particle size and the characteristics of starting silicon carbide, RSSC is characterized by various structural modifications. A hexagonal 6H structure shows up in RSSC based on a nanosized powder of a cubic solid solution of carbon in silicon carbide.


CHROMIUM CARBIDE, IMPREGNATION, INDUCTION FURNACE, REACTION-SINTERED SILICON CARBIDE, SILICON, SILICON CARBIDE

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