Influence of Hot Pressing Temperature and SiC Content on the Microstructure and Mechanical Properties of ZrB2-SiC
The influence of hot pressing temperature and SiC content on the microstructure and mechanical properties of ZrB2-SiC ceramics was investigated.ZrB2 containing 20 volume percent SiC were prepared by hot pressing at 1850,1900 and 1950℃ for 60 min.Fully dense ceramic was obtained after hot pressing at temperature of 1950℃.In addition,the materials with SiC content of 0,10vol.%,15 vol.%,20 vol.% and 30 voi.% hot pressed at 1950℃ were also investigated.Results showed that the grain size of the ZrB2 significantly reduced on adding 10vol.% SiC and then decreased slightly with further increasing SiC content,whereas the grain size of SiC exhibited a opposite trend.The flexural strength of ZrB2-SiC ceramics remarkedly increased on adding 10vol.% SiC due to the significant decrease of ZrB2 particle size and then slightly increased with increasing SiC content up to 20vo1.%.However,further increasing SiC content led to a reduction of the flexural strength.
ZrB2 SiC Microstructure Mechanical properties
Yong Zhang Ping Hu Xing-Hong Zhang
Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, PR China
国际会议
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))
哈尔滨
英文
189-192
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）