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
收藏
页码：67 / 70
页数：4
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