胶凝剂对Sol-Gel法合成PZT95/5粉体的影响  

THE EFFECT OF GELLING AGENT ON PZT95/5 POWDERS PREPARED BY Sol-Gel PROCESS

作　　者：王军霞[1] 王进[1] 毕新利[1] 牟国洪[1] 杨世源[1] 

机构地区：[1]西南科技大学材料科学与工程学院,绵阳621010

出　　处：《中国陶瓷》2008年第9期18-20,共3页China Ceramics

基　　金：国家自然科学基金-中国工程物理研究院联合基金资助项目;编号:10476023;学校青年基金项目;编号:06ZX3125

摘　　要：在以无机盐为主要反应前驱物、水为主要溶剂的溶胶-凝胶法制备PZT95/5粉体中,胶凝剂具有重要的作用。研究表明:胶凝剂主要起到调节溶液pH值的作用,可影响溶胶和凝胶的形成,并影响凝胶的微观结构和PZT粉体的性能;当选用氨水为凝胶剂时,控制pH值在3.5～4.0时对溶胶-凝胶的形成有利,且在700℃/2.5h煅烧后能合成单一钙钛矿相PZT95/5粉体,粉体粒度细且均匀。Gelling agent is very important in the process that PZT95/5 powders are prepared by sol-gel method, which using inorganic salts and water as primary precursors and solvent. The results showed that the gelling agent primarily mainly adjusted the pH value which impacted on solgel form, moreover affected gel＇ s microstructure and powders＇ performance. When ammonia was chosen as the gelling agent, the pH value had better be controlled form 3.5 to 4.0 to advantage solgel form, and the gel calcined at 700℃for 2.5h to synthesize single perovskite PZT powders whose granularity was fine and uniform.

关 键 词：PZT95/5 SOL-GEL 胶凝剂 

分 类 号：TQ174.758[化学工程—陶瓷工业] TM534[化学工程—硅酸盐工业]