In order to clarify the effects of sintering property of TiC and the dissolving of metallic impurities into lowchromium carbides, the sintering mechanism in TiC-Cr3C2 ceramic composite containing metallic impurities about 1 % was investigated as a function of Cr3C2 content.
It has been confirmed that densification of TiC was substantially improved by composing with Cr3C2. In the ceramic system, solid solution reaction of Cr3C2 into.TiC plays an important role in densification process. As a result completely dense bodies of TiC-Cr3C2 ceramic composite could be obtained by normal sintering below 1600°C. Metallic impurities were fully dissolved into low-chromium carbides before complete densification.
Cr3C2 content which is to be contained for the compact of complete densification and of full dissolution of metalic impurities were calculated on the basis of the previous and present results.