粗晶/细晶CuCr50触头材料的电弧运动行为及其烧蚀特性

刘彪, 王军, 袁召, 王哲, 常延丽, 李青山

Arc Motion Behavior and Ablation Characteristics of Coarse-grained/Fine-grained CuCr50 Contact Materials

LIU Biao, WANG Jun, YUAN Zhao, WANG Zhe, CHANG Yanli, LI Qingshan

表1 粗晶/细晶CuCr50触头材料的物理性能

Table 1 Physical properties of coarse-grained/fine-grained CuCr50 contact materials

Physical properties Coarse-grained CuCr50 Fine-grained CuCr50 Electrical conductivity/ MS·m-1 22.3 20.9 Hardness (HV) 104.15 160.29 Density / g·cm-3 7.93 7.90 Theoretical density / g·cm-3 7.98 7.98 Density percentage / % 99.4 99.0