The contact resistance and arc erosion behavior of separable Cp-Nb-Cr/Cu-Cd electrical contact material

被引：4

作者：

Cui, Y. S. ^{[1
]}

Zhen, L. ^{[1
]}

Wang, Y. ^{[1
]}

Shao, W. Z. ^{[1
]}

Ivanov, V. V. ^{[2
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[2] Krasnoyarsk State Univ, Res Inst Phys & Engn, Akademgorodok, Russia

来源：

PROGRESSES IN FRACTURE AND STRENGTH OF MATERIALS AND STRUCTURES, 1-4 | 2007年 / 353-358卷

关键词：

electrical contact; copper matrix composites; electrical endurance; contact resistance; arc erosion;

D O I：

10.4028/www.scientific.net/KEM.353-358.886

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cp-Nb-Cr/Cu-Cd electrical contact material, which contains 1.7wt.% of Cd, 0.5wt.% of Cp (man-made diamond particles), 2.0 wt.% of Nb and 0.7 wt.% of Cr, was fabricated by powder metallurgy process. The contact material was installed in different ac contactors covering current range from 40 to 630A. While tested under AC-4 electrical load, the electrical contact material was worn out gradually by repeated electrical arc, and microstructure of the arc-affected surface layer changed dramatically. Mechanism of arc erosion process and contact resistance fluctuation was discussed by corresponding microstructure observation and chemical composition analysis of the surface layer. Cp-Nb-Cr/Cu-Cd electrical contact material is capable to be used in 63 similar to 250A ac contactors under AC-4 working conditions.

引用

页码：886 / +

页数：2

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