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。
The resistivities at high temperature were studied of conductive ceramics based on La 2O 3 with different compositions. The results showed that those of (La 2O 3) 1- a ·(X 2O 5) a ·CuO and (La 2O 3) 1-2 a ·(X 2O 5) 2 a ·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.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
1997年第1期159-161,共3页
The Chinese Journal of Nonferrous Metals
关键词
导电陶瓷
惰性阳极
高温电阻率
氧化镧
conductive ceramics based on La 2O 3 inert anode resistivity at high temperature