氧化气氛热处理对BaTiO_3热敏电阻电性能的影响  

Effect of Heat-Treatment under Oxygen Atmosphere on the Electrical Properties of BaTiO3 Thermistor

作　　者：周东祥[1] 姜胜林[1] 龚树萍[1] 罗勇[1] 

机构地区：[1]华中理工大学固体电子学系

出　　处：《功能材料》1999年第2期172-174,共3页Journal of Functional Materials

基　　金：国家"863"高科技资助

摘　　要：对常温阻值小于标称阻值ＰＴＣＲ热敏电阻在氧化气氛中（氧分压ｌｇＰＯ２＝－０．３３５７～－０．４９１４）于６００℃、８００℃、９００℃分别处理２ｈ、４ｈ、６ｈ，对处理后的热敏电阻电性能及老化特性进行了研究。结果表明，在满足产品电性能要求的前提下，氧化气氛热处理在一定程度上可以调整ＰＴＣＲ热敏电阻的常温阻值。The PTCR thermistors which have a lower room tempreature resistance than nominal ones,are treated under oxygen atmosphere (lgPO2=-0.3357-0.4914) for 2h,4h and 6h at 600,800 and 900 respectively.The electrical properties and aging properties after treatment are investigated.Experimental results indicate that the heat treatment under oxygen atmoshpere can modified the room temperature resistance in a certain extent and improve the percentage of qualified products of thermistors while the requirements are met.

关 键 词：氧化气氛 热处理 PTCR 热敏电阻 电性能 

分 类 号：TQ174.756[化学工程—陶瓷工业]