Microstructure and Thermal Shock Resistance of LaPO4-ZrO2
| Periodical | Key Engineering Materials (Volumes 368 - 372) |
|---|---|
| Main Theme | High-Performance Ceramics V |
| Edited by | Wei Pan and Jianghong Gong |
| Pages | 1633-1635 |
| DOI | 10.4028/www.scientific.net/KEM.368-372.1633 |
| Citation | Zhong Qiu Li et al., 2008, Key Engineering Materials, 368-372, 1633 |
| Online since | February, 2008 |
| Authors | Zhong Qiu Li, Jia Chen Liu, Shun Li, Bing Zhou, Wei Jing |
| Keywords | Ceramic, LaPO4, Thermal Shock Resistance, Weak Bonding Interface |
| Price | US$ 28,- |
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 470oC 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.