Microstructure and Mechanical Properties of SICP/MoSi2 Composites Manufactured by in situ Reaction and Hot Pressing

摘要：

Pure MoSi2 and MoSi2 composites with different volume fraction of SiC particles were prepared by the technology of in situ reaction and hot pressing the pure powder of Mo, Si and C after alcohol mixing.The effects of in situ formed SiC particles on the microstructure, the flexural strength and fracture toughness of SiCp/MoSi2 composites were studied.The research shows the relative density, flexural strength and fracture toughness of the composites are increased compared with those of the pure MoSi2 material.It is found that the in-situ formed SiC particles refine the M0S12 grains and eliminate the brittle SiO2 glass phase.The strengthening mechanism of the composites is of the refinement of MoSi2 grains,dispersion strengthening of the in-situ formed SiC particles and elimination of the brittle SiO2 glass phase.

关键词： SiCp/MoSi2 composites Microstructure Mechanical Properties in situ Reaction and hot pressing

作者: Han-Ying Wang Gao-Shan Ma Yan-Qing Yang

作者单位: ZhengZhou Institute of Aeronautical Industry Management,China ZhengZhou Institute of eronautical Industry Management,China Northwestern Polytechnical University,China

会议类型: 国际会议

会议名称: 2011 2nd International Conference on Material and Manufacturing Technology(2011第二届材料与制造技术国际会议 ICMMT2011)

会议地点: 厦门

会议语种:英文

页码: 204-209

在线出版日期: 2011-07-08（万方平台首次上网日期，不代表论文的发表时间）