Features of formation of composite ceramics from SiC-Si-Mo at high pressure

Abstract

SiC-based composite ceramics were investigated by X-ray diffraction, electron microscopy and electron-probe X-ray microanalysis. It is established that, depending on the composition of the initial powder mixtures, at T = 1500-1800°C and P = 4 GPa, different types of composite ceramics formed. Ceramics obtained from mixtures with CSiC ≥ 50 wt. % contains SiC, Si, and Mo. Ceramics on the base of SiC-MoSi2 was obtained from mixtures with CSiC < 50 wt.%.

Keywords

• silicon carbide
• silicon
• molybdenum
• composite ceramics