Microstructure and Thermal Shock Resistance of LaPO4-ZrO2
LaPO4-ZrO2 composites were prepared by slip casting and pressureless-sintered in air.The effects of LaPO4 addition on microstructure and thermal shock resistance were addressed.The thermal shock resistance of the composites was evaluated by air quenching and a subsequent three-point bending test to determine the strength degradation.Comparisons were made with results from parallel experiments conducted using a ZrO2 ceramic without LaPO4 additions.The reference ZrO2 ceramic showed the expected substantial strength losses when thermally quenched from 470℃ above room temperature.By contrast,the LaPO4-ZrO2 ceramics,while displaying reduced strength relative to the reference ZrO2 ceramics,exhibited minimal strength degradation under severe thermal shock conditions.
Ceramics LaPO4 Weak bonding interface Thermal shock resistance
Zhongqiu Li Jiachen Liu Shun Li Bing Zhou Wei Jing
School of Materials Science and Engineering of Tianjin University,Key Lab of Advanced Ceramics and Machining Technology,Ministry of Education,Tianjin 300072,China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
1633-1635
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）