PTCR characteristic of gelcast BaTiO3 ceramic thermistor

被引：16

作者：

Hu, YX ^{[1
]}

Zhou, DX ^{[1
]}

Zhang, DL ^{[1
]}

Lu, WZ ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Solid State Elect, Wuhan 430074, Peoples R China

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2001年 / 88卷 / 01期

关键词：

gelcasting; BaTiO3 ceramic thermistor; PTCR effect; microstructure;

D O I：

10.1016/S0924-4247(00)00496-9

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper applied gelcasting, a novel forming method, to form BaTiO3-based ceramic thermistor. The resistivity-temperature characteristics and microstructures of gelcast samples from suspensions with different solids loading were investigated in comparison with those of die-pressed ones. It is found that gelcast ceramics exhibit stronger PTCR effect than die-pressed ones at the same sintering systems and that the solids loading in the range of 42-50 vol.% has slight influence on the PTCR effect of gelcast ceramics. The two phenomena were explained. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：67 / 70

页数：4

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