掺杂元素物态对PTC材料性能的影响  

Influence of the State of Dopants on the Properties of PTC Material

作　　者：吴淑荣[1,2] 王卫民[1,2] 龚健[1,2] 畅柱国[1,2] 熊为淼[1,2] 

机构地区：[1]西北大学应用化学研究所 [2]西北大学化学系

出　　处：《西北大学学报（自然科学版）》1997年第2期100-102,共3页Journal of Northwest University（Natural Science Edition）

基　　金：陕西省教委科学基金

摘　　要：研究了Ｙ－Ｓｂ，Ｌｉ－Ｍｎ，Ｓｉ－Ａｌ等元素以固相或液相掺杂对正温度系数热敏电阻（ＰＴＣ）材料性能的影响。实验结果表明，Ｌｉ－Ｍｎ液相掺杂可以提高材料ＰＴＣ效应及耐压值；Ｓｉ－Ａｌ液相掺杂可降低材料室温电阻率，提高材料耐压值，Ｙ－Ｓｂ液相掺杂可以降低材料室温电阻率。The influence of the state of dopants (Y Sb; Li Mn; Si Al etc. elements) on the properties of PTC material was studied. The experimental results show that Li Mn doping in liquid phase can raise the PTC effect and the withstand voltage of the material; Si Al doping in liquid phase can decrease the resistivity of the material at room temperature and increase the withstand voltage; Y Sb doping in liquid phase can decrease the resistivity at room temperature but the PTC effect of the material is somewhat lowered.

关 键 词：热敏电阻 液相掺杂 固相掺杂 掺杂元素 PTC 

分 类 号：TN373[电子电信—物理电子学]