湿-干法合成超细颗粒PZT固溶体粉料及陶瓷  

Preparation of Super-fine PZT Powder and Ceramic by Wet-dry Method

作　　者：吴裕功[1] 王斌[1] 李艺峰[1] 乔劲轩[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《电子元件与材料》2006年第4期7-9,共3页Electronic Components And Materials

基　　金：国家自然科学基金资助项目(50472065)

摘　　要：提出了一种制备PZT粉料及陶瓷的新工艺,即采用湿-干法制备PZT固溶体粉料。首先用聚合物中间体方法合成了钙钛矿型PZT中的B位离子氧化物固溶体ZrxTi1-xO2(x=0.50～0.56),并以此作为B位先驱体,其物相为单相,组成超出固相反应可以合成的单相ZrxTi1-xO2固溶体的锆钛比范围;然后用该先驱体与碳酸铅通过固相反应合成PZT固溶体。固相反应温度可显著降低至725℃,PZT粉料颗粒的粒度达到130nm。常温下,PZT陶瓷εr的最大值达到1260。A new method of preparing PZT powders and ceramics was established. PZT powders were prepared by wet-dry method. As B-site precursor, oxide ZrxTi1-xO2 of B-site ions in perovskite PZT was prepared by the polymeric method. The precursor is ZrxTi1-xO2 solid solution and has single phase of ZrTiO4 structure. The composition range （x = 0.50-0.56） exceeds the limitation of that by conventional solid state method. The B-site precursor and PbCO3 are synthesized into PZT powders by solid state reaction, and its calcination temperature can be reduced to 725℃ obviously. The average particle size is 130 nm. At room temperature, the maximal εr value of PZT ceramics is 1 260.

关 键 词：无机非金属材料 PZT陶瓷 湿-干法 超细颗粒 介电性能 

分 类 号：TM22[一般工业技术—材料科学与工程]