低电阻率高性能PTCR陶瓷材料-汽车闭锁器马达过电流保护元件的制备

无机材料学报

低电阻率高性能PTCR陶瓷材料-汽车闭锁器马达过电流保护元件的制备

黄仲臧¹; 沈嘉祺²

1. 中国科学院上海硅酸盐研究所; 上海 200050; 2. 上海希格玛电子陶瓷有限公司; 上海 201818

收稿日期:1999-01-25 修回日期:1999-03-12 出版日期:1999-12-20 网络出版日期:1999-12-20

High Performance PTCR Ceramic Material with Low Resistivity-Preparation of Overcurrent Protector for Door Lock Motor in Automobile

HUANG Zhong-Zang¹; SHEN Jia-Qi ²

1. Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China; 2. Shanghai Sigma Electronic Ceramics Co.; LTD. Shanghai 201818; China

Received:1999-01-25 Revised:1999-03-12 Published:1999-12-20 Online:1999-12-20

摘要/Abstract

摘要： 为满足汽车电器等低电压下的保护元件的需求，研制低电阻率高性能PTCR陶瓷材料已成为研究的热点．本工作采用通常的混合氧化物工艺制备了室温电阻率＜10Ω·cm，电阻率的突变达到10⁵的高性能PTCR热敏电阻陶瓷．并研究了原材料，固溶体的基方组成，各种添加物以及烧结工艺等对PTCR陶瓷性能的影响，特别注意了用液相方式添加施主和受主杂质在制备低电阻率的高性能PTCR陶瓷时起的更为有效的作用，对材料的化学组成，制备（烧结）工艺，显微结构和PTCR效应之间的关系进行了讨论．用本材料制备的元件能用于汽车闭锁器马达的过电流保护．

关键词: PTCR陶瓷, 室温电阻率, 电阻率的突变, 马达过电流保护元件

Abstract: The development of PTCR ceramic material with low resistivity and high performance has been recently
become one of the hot spots in the electronic ceramic research in order to meet the requirement of overload protection in automobile and other
low voltage applications. PTCR ceramic material based on BaTiO₃ with electrical resistivity at room temperature <10Ω·cm and
resistivity jump -10⁵ was prepared by conventional mixed -oxide method. The properties of raw material, the constituents of solid solution, and
additives and the schedule of sintering process were studied, and more attention was paid to the method of adding donor and acceptor in liquid
solution. The relationship between composition, process, performance and microstructure during the ceramic preparation was discussed. The device
made of the PTCR ceramic material obtained can be used as an overcurrent protector for door lock motor in automobile.

Key words: PTCR ceramics, resistivity at room temperature, resistivity jump, overcurrent protector for motor

中图分类号:

TM22

黄仲臧,沈嘉祺. 低电阻率高性能PTCR陶瓷材料-汽车闭锁器马达过电流保护元件的制备[J]. 无机材料学报.

HUANG Zhong-Zang,SHEN Jia-Qi. High Performance PTCR Ceramic Material with Low Resistivity-Preparation of Overcurrent Protector for Door Lock Motor in Automobile[J]. Journal of Inorganic Materials.

[1]	周志刚,唐子龙,张中太. BaTiO₃基PTCR气敏陶瓷的晶界化学研究[J]. 无机材料学报, 2004, 19(3): 571-578.
[2]	曹明贺,袁俊,周东祥,龚树萍. 低电阻率Ba_0.92Ca_0.08Ti_1.02O₃PTCR陶瓷界面缺陷态研究[J]. 无机材料学报, 2003, 18(6): 1235-1239.
[3]	钱辰,李勇,唐小锋,唐子龙,钱劲,周志刚. Mn掺杂BaTiO₃基PTCR陶瓷相变的EPR研究[J]. 无机材料学报, 2001, 16(4): 734-738.
[4]	唐小锋,陈海龙,周志刚. PTCR陶瓷材料的超低温烧结[J]. 无机材料学报, 2000, 15(4): 697-703.
[5]	虞孝栋,李国荣. PTCR陶瓷中的电阻率反常现象[J]. 无机材料学报, 1997, 12(3): 375-380.