Si3N4–TiN–SiC three particle phase composites for wear applications

Abstract

A three phase ceramic composite consisting of a Si3N4 matrix reinforced with TiN and SiC particles was prepared by hot pressing. The Si3N4–TiN–SiC composite material was investigated for microstructure and mechanical properties. Dry wear tests were carried out and the results compared with two phase Si3N4–TiN and Si3N4–SiC composites. The Si3N4–TiN–SiC was found to have an interesting combination of high abrasive wear resistance, low coefficient of friction and high hardness, which could lead to its use in very interesting wear applications.