WC-Ni-SiCw Alloys Prepared by Hot-pressed Sintering

摘要：

　　WC-Ni-SiCw alloys were prepared through hot-pressed sintering by using WC,Ni,VC,TaC and SiC nano-whisker as raw materials.The influence of SiC whisker addition on the microstructure and mechanical properties of the as-prepared WC-Ni alloys was investigated.Except WC hard phase and Ni binder phase,no other phase was detected by x-ray diffraction.The observations by scanning electron microscope demonstrated that there were some micropores in the as-prepared materials,and their size and quantity increased with increasing amount of SiCw.Vickers hardness and flexural strength tests indicated that the bulk hardness of WC-Ni-SiCw alloys slightly decreased with increasing amount of SiCw; and the flexural strength increased at first and then decreased with increasing amount of SiCw.The alloys with 0.53 wt% SiCw presented the highest flexural strength of 1700 MPa.

关键词： WC-Ni alloy SiC whisker Hot-pressed sintering Mechanical properties

作者: Xiaoyong Ren Zhijian Peng Huiyong Rong Ying Peng Zhiqiang Fu Chengbiao Wang Yue Wen Longhao Qi Hezhuo Miao

作者单位: School of Engineering and Technology,China University of Geosciences,Beijing 100083,China State Key Lab of New Ceramics and Fine Processing,Tsinghua University,Beijing 100084,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: 928-931

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）