首页|Densification and Mechanical Properties of B_4C Based Composites Sintered by Reaction Hot-pressing
Densification and Mechanical Properties of B_4C Based Composites Sintered by Reaction Hot-pressing
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
Trans Tech Publications Ltd
Boron carbide (B_4C) possesses unique physical and thermal properties. In this paper, B_4C based composites toughened by TiB_2 were fabricated by in-situ reaction sintering with the original microcrystalline powders B_4C, TiO_2 and glucose. The influences of sintering temperature and content of TiO_2 on the sintering behavior and mechanical properties were investigated. (TiB_2, Al_2O_3)/B_4C and (TiB_2,SiC)/B_4C composites with almost fully dense were fabricated by using additives of Al_2O_3 and Si powders and sintering at 1950℃ and 1900℃, the fracture toughness of composites reach to 7.09 and 6.35 MPa·m~(1/2) respectively. The analysis of microstructure shows that the main toughen mechanism is the crack deflection due to the existence of residual stress.
boron carbidetitanium diboridein situ reaction
Wang Guofeng、Zhang Jihong、Zhang Chunping、Zhang Kaifeng
展开 >
National Key Laboratory of Precision Hot Processing of Metals, Harbin, China
Mudanjiang Jingangzuan Boron Carbide Co., Ltd, Mudanjiang, China
NETL
NSTL
Trans Tech Publications Ltd
