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.

引用

页码：249 / 251

页数：3

共 6 条

[1]

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[2]

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Shimada, T. ;

Touji, K. ;

Katsuyama, Y. ;

Takeda, Hiroaki ;

Shiosaki, Tadashi .

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[4]

[苏滔珑 Su Taolong], 2007, [稀有金属, Chinese Journal of Rare Metals], V31, P22

[5]

Zhou Dongxiang, 1989, PTC MAT APPL, P61

[6]

Zhu Bing-He, 2003, Electronic Components & Materials, V22, P21

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