Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第7卷    第1期    总第22期    1997年3月

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文章编号:(1997)01-159-3
La2O3基导电陶瓷高温电阻率的测试和研究
李友芬   孙根生   武世民   黄芝英   顾学范

(北京科技大学理化系, 北京 100083)

摘 要: 研究了不同组成的La2O3基导电陶瓷的高温电阻率,结果表明: (La2O3)1-a·(X2O5)a·CuO及(La2O3)1-2a·(X2O5)2a·CuO具有较低的高温电阻率。由于兼有金属导电机制和半导体导电机制,且两种导电机制随温度变化的作用相反,La2O3基导电陶瓷在室 温到1 000 ℃的温度范围内电阻率变化不大。

 

关键字:   La2O3基导电陶瓷     惰性阳极     高温电阻率

MEASUREMENT AND STUDY OF RESISTIVITY OF CONDUCTIVE CERAMICS BASED ON La2O3 AT HIGH TEMPERATURE
Li Youfen, Sun Gensheng, Wu Shimin, Huang Zhiying, Gu Xuefan

Department of Physicochemistry,University of Science and Technology Beijing, Beijing 100083

Abstract:The resistivities at high temperature were studied of conductive ceramics based on La2O3 with different compositions. The results showed that those of (La2O3)1-a·(X2O5)a·CuO and (La2O3)1-2a·(X2O5)2a·CuO are relatively low. The resistivity change is very small between room temperature and 1 000 ℃ because the samples possess conductive mechanisms of both metal and semi-conductor, and these two kinds of mechanisms act contrary with the change of temperature.

 

Key words: conductive ceramics based on La2O3    inert anode   resistivity at high temperature

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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