Mechanical and tribological properties of short-fiber-reinforced SiC composites

作者:Tang, Hanling; Zeng, Xierong*; Xiong, Xinbo; Li, Long; Zou, Jizhao
来源:Tribology International, 2009, 42(6): 823-827.
DOI:10.1016/j.triboint.2008.10.017

摘要

The short-carbon-fiber-reinforced SiC (C-sf/SiC) composites were prepared by hot-pressing sintering with Si, Al and B as sintering additives. The effects of fiber volume fraction on the mechanical and tribological properties of the C-sf/SiC composites were investigated. The results show that the bending strength values of the composites containing a certain content of the short carbon fibers are higher than that of the monolithic SiC. The friction coefficients of the composites decrease with increasing short cat-boil fibers content. Except of the composite containing 53 vol% short carbon fibers, the wear rates of the composites decrease with increasing short carbon fibers content. and are lower than that of the monolithic SiC drastically.