Research of BaTiO3-Na0.5Bi0.5TiO3 Lead-Free PTCR Ceramics

被引：0
|
作者：
Wei Jifeng [1 ]
Pu Yongping [1 ]
Wang Jinfei [1 ]
Yang Gongan [1 ]
机构：
[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2009年 / 38卷
关键词：
BaTiO3; ceramics; lead free; resistance-temperature properties; PTC effect;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Lead free PTCR ceramics based on BaTiO3-Na0.5Bi0.5TiO3 (BT-NBT) system were prepared by a solid state reaction method. By DSC, XRD, SEM and other analytical instrument, the effect of the amount of additive NBT and sintering atmosphere on microstructure and resistance-temperature properties of the PTC ceramic was investigated. The results indicated that the Curie temperature (T-c) was increased evidently with the additive NBT when x<0.03. T-c could be enhanced to 150 degrees C when adding x=0.01 NBT. The room temperature resistivity of the sample sintered in air was obviously higher than that sintered in nitrogen; however, the PTC effect of the sample sintered in nitrogen was bated.
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收藏
页码：249 / 251
页数：3
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