PZN-PFW and PFN-PFW relaxor ferroelectric ceramics by a reaction-sintering process

被引：10
|
作者：
Liou, YC [1 ]
Shih, YC [1 ]
Chuang, CJ [1 ]
机构：
[1] Kun Shan Univ Technol, Dept Elect Engn, Tainan, Taiwan
来源：
JOURNAL OF ELECTROCERAMICS | 2004年 / 13卷 / 1-3期
关键词：
relaxor ferroelectrics; PZN-PFW; PFN-PFW; reaction-sintering process;
D O I：
10.1007/s10832-004-5142-7
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Pb((Zn1/3Nb2/3)(0.6)(Fe2/3W1/3)(0.4))O-3 and Pb((Fe1/2Nb1/2)(0.7)(Fe2/3W1/3)(0.3))O-3 (PZNFW and PFNW) perovskite ceramics prepared by a reaction-sintering process were investigated. Without any calcination, the mixture of PbO, Zn(NO3)(2), Fe(NO3)(3), Nb2O5 and WO3 for stoichiometric PZN-FW and PFNW was pressed and sintered directly. Pyrochlore phase more than 25% were formed in PZNFW ceramics after 2 h sintering at 930-980degreesC. PFNW ceramics of 100% perovskite phase were obtained after 4 h sintering at 930-1080degreesC. A density of 8.13 g/cm(3) (93.4% of theoretical value) was obtained after sintered at 1080degreesC for 4 h. Dielectric constant at room temperature under 1 kHz reaches 32000 after sintered at 1080degreesC for 4 h.
引用
收藏
页码：457 / 461
页数：5
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