Microstructure and electrical properties of porous (Ba,Sr)TiO3 ceramics

被引：3
|
作者：
Park, K
Kim, JG
Kim, J
Cho, WS
机构：
[1] Sejong Univ, Dept Adv Mat, Kwangjin Gu, Seoul 143747, South Korea
[2] Inha Univ, Inst Adv Mat, Inchon 402751, South Korea
[3] Hoseo Univ, Dept Mat Engn, Asan 336795, South Korea
[4] Inha Univ, Sch Mat Sci & Engn, Inchon 402751, South Korea
来源：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2002年 / 88卷 / 01期
关键词：
porous; (Ba; Sr)TiO3; PTCR; electrical properties; crystal structure;
D O I：
10.1016/S0921-5107(01)00911-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Porous and fine-grained (Ba,Sr)TiO3 ceramics were fabricated by the addition of partially oxidized Ti or Ti powders into the (Ba,Sr)TiO3 powders. The crystalline structure of the porous (Ba.Sr)TiO3 ceramics was strongly dependent on the oxygen contents. The room-temperature crystalline structure of the vacuum-sintered (Ba,Sr)TiO3 was cubic. while that of the vacuum-sintered and then paste-baking treated (Ba,Sr)TiO3 was tetragonal. The paste-baking treated (Ba,Sr)TiO3. containing 5-7 vol.% partially oxidized Ti, showed the excellent positive temperature coefficient of resistivity (PTCR) characteristics. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：9 / 13
页数：5
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