钇稳定四方氧化锆精细陶瓷老化性能检测方法的研究  

Study of Determination Method of Y-TZP Fine Ceramics Aging Behavior

作　　者：吴皓[1,2] 蒋丹宇[2] 张骋[3] 李强[1] 

机构地区：[1]华东师范大学,上海200062 [2]中国科学院上海硅酸盐研究所,上海200050 [3]上海应用技术学院,上海200235

出　　处：《硅酸盐通报》2010年第3期747-750,共4页Bulletin of the Chinese Ceramic Society

摘　　要：钇稳定四方氧化锆(Y-TZP)精细陶瓷依靠钇掺杂来稳定四方相结构,在实际应用中,特别是在潮湿环境1000℃以上的中低温区,长期使用时由于发生四方相向单斜相的转变,而表现出老化现象。因此Y-TZP这类重要精细陶瓷的可靠性及失效分析的关键是其低温老化性能的检测和分析。在对Y-TZP老化性能研究中,通过设定温度、时间、气氛等参数,对氧化锆陶瓷样品进行老化实验。然后通过实验前后对样品称重,X射线粉末衍射仪进行物相分析等手段,对老化样品进行分析,从而了解在老化条件下对氧化锆陶瓷材料的样品表面相结构影响,分析氧化锆陶瓷材料的老化机理。通过多种检测分析方法的对比研究,确定XRD相定量分析是一种可靠、可行、高效、准确的Y-TZP老化性能检测分析手段。The stable structure of Y-TZP fine ceramics must depend on doped Y.While Y-TZP is employed at low temperature over 1000 ℃ and humidity atmosphere for a long time,its phase structure will be changed from tetragonal to monoclinic and aging behavior take places.So the determination and analysis of low temperature degradation of Y-TZP are key points of its reliability.The aging experiments of Y-TZP were conducted at varied conditions including temperature,time,atmosphere,et al.Then the aging specimens were tested by weight loss and XRD phase analysis to investigate the structure transformation on the surface and aging mechanism.Based on comparison of several determination methods,the quantitative phase analysis by XRD is confirmed as a reliable,valid and exact determination method of Y-TZP aging behavior.

关 键 词：Y-TZP 老化 陶瓷 XRD 

分 类 号：TQ174[化学工程—陶瓷工业]