(MgO·Y_2O_3)稳定ZrO_2的研究  

A Study on (MgO·Y_2O_3) Costabilized Zirconia Ceramic

作　　者：吴建锋[1] 徐晓虹[1] 孙淑珍[1] 任永光 

机构地区：[1]武汉工业大学材料科学与工程学院,430070

出　　处：《硅酸盐通报》1999年第5期69-71,共3页Bulletin of the Chinese Ceramic Society

基　　金：湖北省重点科技攻关项目

摘　　要：本研究在ＭｇＯ－ ＰＳＺ 基础上引入Ｙ２Ｏ３ 共同稳定ＺｒＯ２ ，采用溶胶—凝胶法制得ＭｇＯ－ Ｙ２Ｏ３ － ＺｒＯ２ 超微细粉，经成型、烧结制得（ Ｍｇ、Ｙ） —ＰＳＺ 陶瓷材料。经性能及微观结构测试，结果表明用此法制得的材料，其烧结温度从１６００ ℃降至１４５０ ℃，晶粒尺寸减小至１ ～２μｍ ，抗弯强度及断裂韧性明显提高。The study introduced yttria for costabilizing zirconia on the basis of MgO-PSZ,and prepared ultra-fine active powders of MgO-Y 2O 3-ZrO 2 system by sol-gel method.The (Mg、Y)-PSZ ceramic was made by dry pressing,isostatic pressing and sintering processes.The tests of the properties and microstructure of the material were carried out.The results showed that its sintering temperature was decreased to 1450℃ from 1600℃,and the grain size to 1～2μm,and the strengh and fracture toughness were increased markedly.

关 键 词：PSZ 烧结温度 力学性能 二氧化锆 氧化镁 陶瓷 

分 类 号：TQ174.758[化学工程—陶瓷工业] TQ174.15[化学工程—硅酸盐工业]