陶瓷热敏电阻氢处理降阻的研究  

A Study on the Annealing of Ceramic PTCR in Hydrogen Atmosphere

作　　者：樊玉薇[1] 贾连娣[1] 吴冲若[1] 

机构地区：[1]东南大学电子工程系

出　　处：《东南大学学报（自然科学版）》1996年第3期106-109,共4页Journal of Southeast University：Natural Science Edition

摘　　要：陶瓷热敏电阻氢处理降阻的研究樊玉薇，贾连娣，吴冲若（东南大学电子工程系，南京２１００１８）为使钛酸钡系陶瓷正温度系数热敏电阻（ＰＴＣＲ）的电阻率在一定范围内，一般方法是通过控制原材料纯度、微量元素分布均匀性与工艺过程一致性来减小阻值分散［１］，而对烧...A new method to adjust the resistivity of BaTiO3 ceramic PTCR in a lower temperature is proposed. It is shown that the resistivity of ceramic can be reduced controllably by annealiug the sample in hydrogen atmosphere. The stability of resistivity in a long time and the change of the electrical properties of ceramics after the annealing are studied. It is concluded that the electrical properties of ceramic annealed in hydrogen atmosphere to a certain degree can be improved obviously. The mechanism of the decrease of the resistivity is discussed based on the change of the potential barrier of grain-boundary.

关 键 词：陶瓷 热敏电阻 氢处理 降阻 正温度系数 PTCR 

分 类 号：TN373[电子电信—物理电子学]