MgO掺杂8YSZ陶瓷性能的研究  

RESEARCH ON THE PROPERTIES OF 8YSZ CERAMICS WITH MgO ADDITIVE

作　　者：刘小英[1] 黄晓巍[1] 陈静[1] 吴星星[1] 

机构地区：[1]福州大学材料科学与工程学院,福州350108

出　　处：《中国陶瓷》2010年第2期21-23,29,共4页China Ceramics

基　　金：福建省自然科学基金;编号:E0810007;福建省教育厅A类面上项目;编号:JA07004;福州大学科技发展基金(2007-XQ-04)资助项目

摘　　要：以MgO为添加剂,制备8YSZ陶瓷材料,研究MgO掺杂对材料致密化、显微结构、相组成和抗弯强度的影响。结果表明:引入MgO添加剂后有利于材料的致密化。当MgO含量较少时,MgO固溶于基体中,当MgO≥7wt%时,8YSZ基体中出现第二相。添加少量MgO,晶粒尺寸增大,当出现第二相时,晶粒尺寸略有减小。材料的致密化使其具有良好的抗弯强度。8YSZ ceramics were prepared using MgO as additives.Effects of MgO addition on the densification,microstructure,phase composition and bending strength were investigated.The results indicate that the densification is improved by adding MgO.When the MgO content is lower,it dissolves into the matrix and the grain size of zirconia increases,but when MgO is larger than 7wt%,the second phase is presented,by which the grain size decreases.And excellent bending strength is achieved because of the higher densification degree.

关 键 词：8YSZ MGO 显微结构 第二相 

分 类 号：TQ174.75[化学工程—陶瓷工业]