Interfacial behaviour between Bi1.5ZnNb1.5O7•0.02V2O5 and Ag

被引:23
作者
Su, WF [1 ]
Lin, SC [1 ]
机构
[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 10764, Taiwan
关键词
capacitors; dielectric properties; diffusion; microwave ceramics; powders-solid state reaction; (Bi; Zn)NbO3;
D O I
10.1016/S0955-2219(03)00189-4
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
The interfacial behavior between Bi(1.5)ZnNb(1.5)O(7.)0.02V(2)O(5) (BZN-V) dielectric and silver was investigated by using X-ray diffractometer, scanning electronic microscopy, and electronic probe microanalyzer (EPMA). No new crystalline phase was found after firing the mixture of BZN-V and silver powder at 850 degreesC for 1 h. However, silver migration was observed when BZN-V was cofired with a silver electrode under the same condition. A diffusion distance of 620 mum was measured by EPMA. A eutectic reaction between silver and V2O5 is proposed for the mechanism of the silver migration. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2593 / 2596
页数:4
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