Y_2O_3改性的MgOZrO_2共析陶瓷  

EUTECTOID MgOZrO 2 CERAMICS MODIFIED WITH 2% Y 2O 3

作　　者：陈玉如[1] 吴厚政[1] 张琪[1] 谈家琪[1] 

机构地区：[1]天津大学材料科学与工程系

出　　处：《硅酸盐学报》1997年第4期401-405,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金

摘　　要：共析ＭｇＯＺｒＯ２陶瓷添加Ｙ２Ｏ３可以获得高温热稳定性和较佳的力学性能，添加２％Ｙ２Ｏ３时断裂韧性为７．６ＭＰａ·ｍ１／２，弯曲强度为６１８ＭＰａ。用透射电子显微镜详细研究和讨论了上述材料的时效显微组织和韧化的原因。A kind of ceramics of eutectoid composition in MgOZrO 2 system with Y 2O 3 addition can be obtained,having optimum stability at high temperature and mechanical properties with fracture toughness in 7 6MPa·m 1/2 and bending strength in 618MPa when adding 2%(in mole) Y 2O 3.The ageing microstructures and cause of toughening of the above mentioned materials were investigated by means of TEM in detail.

关 键 词：氧化锆 氧化钇 共析体 改性 陶瓷 烧结 

分 类 号：TQ174.758[化学工程—陶瓷工业] TQ174.652[化学工程—硅酸盐工业]