将复合稳定剂稳定(C-TZP)、Y
2O
3稳定(Y-TZP)和CeO
2稳定(Ce-TZP)四方相氧化锆多晶陶瓷在200℃水热处理0~45 h,研究了水热处理前后陶瓷的微观形貌、物相组成,以及不同水热时间下的力学性能,分析了其水热老化机理。结果表明:随着水热时间的延长,3种氧化锆陶瓷的硬度、抗弯强度及断裂韧性均有不同程度下降,其中Y-TZP陶瓷的下降幅度最大,C-TZP陶瓷的次之;与水热处理前的相比,Y-TZP陶瓷水热处理30 h后其单斜相体积分数增加了58%,Ce-TZP陶瓷和C-TZP陶瓷水热处理45 h后单斜相含量增加较少,Y-TZP陶瓷的抗水热老化性能最差;Y
2O
3是引起水热老化的直接原因,减少Y
2O
3增加CeO
2含量有利于抑制水热老化,其水热老化过程符合氧化锆陶瓷水热老化的化学腐蚀模型。
所属栏目
试验研究清远市科技计划项目(2015D09)
收稿日期
2015/7/312016/12/8
作者单位
周宏明:中南大学材料科学与工程学院, 长沙 410083湖南省正源储能材料与器件研究所, 长沙 410083
夏庆路:中南大学材料科学与工程学院, 长沙 410083
李荐:中南大学材料科学与工程学院, 长沙 410083湖南省正源储能材料与器件研究所, 长沙 410083
备注
周宏明(1974-),男,湖南株洲人,副教授,博士。
引用该论文:
ZHOU Hong-ming,XIA Qing-lu,LI Jian.Hydrothermal Aging Property and Mechanism of Zirconia Ceramics with Different Stabilizers[J].Materials for mechancial engineering,2017,41(2):24~29
周宏明,夏庆路,李荐.含不同稳定剂氧化锆陶瓷的抗水热老化性能及其机理[J].机械工程材料,2017,41(2):24~29
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