Preparation and Properties of Ti5Si3 Matrix Composites Reinforced by Carbon Nanotube

摘要：

　　Ti5Si3 matrix composites reinforced by carbon nanotubes were fabricated by vacuum hot pressing sintering.X-ray diffraction and scanning electron microcopy were carried out to analyze the phase and microstructure of the composites.The effects of carbon nanotubes on mechanical properties were investigated.Experimental results showed that the nanotubes partly reacted with Ti and Si powders to obtain Ti5Si3 and Ti3SiC2,TiSi2 when the sintering temperature is about 1380℃.The mechanical properties of composites can be affected by carbon nanotubes.Meanwhile,the maximal increments of Vickers hardness,bending strength and fracture toughness of the composites,compared with the Ti5Si3 matrix,were 62.9%,160.9% and 159.3%,respectively.Both of transgranular and intergranular fracture in the composites were the main fracture mode.The fracture manners of composites mainly include bridging of CNTs,deflection of minor phases and the evolution of grain.

关键词： Ti5Si3 Carbon nanotubes Vacuum hot pressing sintering

作者: Cui Xinfang Fang Shuangquan Qiao Yingjie Jia Qi

作者单位: College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin,150001, China

会议类型: 国际会议

会议名称: The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))

会议地点: 哈尔滨

会议语种:英文

页码: 195-198

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）