Fracture Behavior of Solidified TiC-TiB2 Ceramic Prepared by Combustion Synthesis in Ultra-high Gravity Field

摘要：

　　A series of TiC-TiB2 ceramics were prepared by combustion synthesis in ultra-high gravity field,the microstructure,fracture behavior and toughening mechanism of the composite ceramic are discussed.The maximum fracture toughness of 13.1 MPa · m0.5 is achieved in TiC-66.7%TiB2,very close to the values (10~15 MPa · m0.5) of fiber-reinforced ceramic composite,contributed from the intensive coupled toughening mechanisms of crack deflection,frictionally crack-bridging and pull out by a large number of fine TiB2 platelets and ductile phase toughing caused by a few Cr-Al metallic phases.

关键词： TiC-TiB2 composite crack propagation fracture behavior self-toughening

作者: Hao Zhang Zhongmin Zhao Long Zhang

作者单位: Mechanical Engineering College,Shijiazhuang 050003,China

会议类型: 国际会议

会议名称: 2013 International Conference on Energy Research and Power Engineering(2013能源研究与电力工程国际会议)(ERPE2013)

会议地点: 郑州

会议语种:英文

页码: 918-922

在线出版日期: 2013-05-24（万方平台首次上网日期，不代表论文的发表时间）