凝胶注模成型氧化锆陶瓷坯体的性能和显微结构分析  

Performance and Microstructure of Green Bodies on Gelcasting of Zirconium Ceramic

作　　者：徐国良[1] 刘忆明[1] 贺与平 易中周[3] 

机构地区：[1]保山师范高等专科学校化学系,云南保山678000 [2]云南省分析测试研究所,云南昆明650051 [3]云南红河学院化学系,云南蒙自661100

出　　处：《云南民族大学学报（自然科学版）》2007年第3期235-238,共4页Journal of Yunnan Minzu University:Natural Sciences Edition

基　　金：云南省教育厅科研基金资助项目(5Y1432D)

摘　　要：研究了通过添加2.6%(质量分数)水溶性高分子聚丙烯酰胺到氧化锆陶瓷悬浮体中能够消除在空气中凝胶注模成型的坯体的表面脱粉现象,成型出的形状复杂的氧化锆湿坯体性能良好,均匀致密.并研究了氧化锆粉体加入聚丙烯酰胺前后在水中的分散特性,同时对坯体的抗弯强度和显微结构进行了详细地测试和观察.In this paper the surface - exfoliation phenomenon of bodies gelcasted in the air was eliminated by adding 2. 6wt% of water - soluble polyacrylamide （PAM） to zirconia ceramic suspension. The performance of zirconia wet adobe with complex shape by gelcasting is good and dense. Also the dispersion characteristics of the zirconia powder in the water in the presence and without of PAM is investigated. Meanwhile the flexural strength and microstructure of bodies are measured and observed in detail.

关 键 词：凝胶注模成型 氧化锆 抗弯强度 显微结构 

分 类 号：O484[理学—固体物理]