Heat stability of sintered composite materials based on titanium carbide

The method of residual strength is used to study the thermal stability of sintered cermet composite materials based on TiC. It is shown that the thermal stability and the coefficient of variation of the residual strength depend strongly on the chemical composition of the metallic binder and the volu...

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Bibliographic Details
Published in:Refractories and industrial ceramics 1999-01, Vol.39 (5-6), p.179-182
Main Authors: Pribytkov, G A, Svitich, Y V, Polev, I V, Vagner, M I, Borisov, S S
Format: Article
Language:English
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Summary:The method of residual strength is used to study the thermal stability of sintered cermet composite materials based on TiC. It is shown that the thermal stability and the coefficient of variation of the residual strength depend strongly on the chemical composition of the metallic binder and the volume fraction of the carbide phase in the material. It is inferred that the value of the compressive stresses in the bulk of the material is a determining factor for the thermal stability of the composite material, which depends in turn on the difference in the coefficients of thermal expansion of the carbide and metallic phases. (Material is composed of titanium carbide and tungsten carbide with nickel alloy binders. Alloys are KhN65MV and Kh77TYuR.)
ISSN:1083-4877