论文部分内容阅读
研究了ω（Ｃｕ）为４４％时Ｃｕ_２ Ｏ－Ｃｕ金属陶瓷电导率σ的变化规律，所得定性和定量的结果均符合导通理论．当铜的体积份数达０．１５～０．１７时，σ值发生５～７个数量级的跃迁，导电特征也由半导体型转化为金属导电，从而证明白银粒子构成了无限导通带所致．
The change of conductivity σ of Cu 2 O-Cu cermets with ω (Cu) 44% was investigated. The qualitative and quantitative results obtained were in accordance with the conduction theory. When the volume fraction of copper reaches 0.15 ~ 0.17, the value of σ changes from 5 to 7 orders of magnitude, and the conductive features are also converted from semiconducting to metallic conducting, which proves that the silver particles form the infinite conduction band .