Influence of Ca0.6Mg0.4Zr4(PO4)6 Coating on Alkali Corrosion Resistance of SiC Ceramic

摘要：

　　Ca0.6Mg0.4Zr4(PO4)6 coating was used as environmental barrier coatings (EBC) to improve the alkali corrosion resistance of SiC ceramic at high temperature.A new sol-gel based process has been developed for preparing high quality and thick C0.6M0.4ZP coating on SiC ceramic with once deposition.The prepared C0.6M0.4ZP coating on SiC ceramic is homogeneous and dense,and shows a thickness of about 200 μm when sintered at 1400 ℃ for 3h.The effectiveness of C0.6M0.4ZP coating in improving the alkali corrosion resistance of SiC ceramic was evaluated based on the SEM microstructural analysis,mass change and flexural strength measurements after being subjected to alkali Na-salt attack at 1000 ℃ for 96 h.Significantly improved alkali corrosion resistance was confirmed for SiC ceramic using C0.6M0.4ZP coating as EBC.

关键词： SiC ceramic Alkali corrosion resistance Ca0.6Mg0.4Zr4(PO4)6 Coating

作者: Zhou Jianer Zhang Xiaozhen Peng Shijiang

作者单位: School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001,China

会议类型: 国际会议

会议名称: 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))

会议地点: 哈尔滨

会议语种:英文

页码: 386-389

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）