Effect of BN Short Fiber Content on Mechanical Properties of ZrB2-SiC UHTCs

摘要：

　　ZrB2-20%volSiC ceramic composites with different volume of BN short fiber were fabricated by hot-pressing sintering.The content of BN short fiber changed from 0 to 15vol%.Dense material was produced at 2000 ℃ and 30MPa.Specimens were then tested for density,flexural strength,fracture toughness and thermal expansions coefficient.Results show that the introducing of BN short fiber into the ZrB2-20%volSiC lead to a serious of change to the mechanical properties of the ceramic.When the content of the BN short fiber is 10vol%,the flexural strength and fracture toughness reach 422.1MPa and 6.15 MPa·m1/2 respectively.And the mechanism of the increasing toughness was also studied.

关键词： BN short fiber hot-pressing sintering mechanical properties

作者: Chang-ling Zhou Yan-yan Wang Zhi-qiang Cheng Chong-hai Wang Rui-xiang Liu

作者单位: Shandong Research & Design Institute of Industrial Ceramics,Zibo 255031,China

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 706-709

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）