The effect of microstructure on the electrical performance of Ag-WC-C contact materials

Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238) Pub Date : 1998-10-26 DOI:10.1109/HOLM.1998.722456

S. Allen, E. Streicher

引用次数: 17

Abstract

Silver-tungsten carbide-graphite contacts of varying microstructures were investigated to determine the effect on contact erosion, sticking, resistance, and current interruption. The parameters examined were graphite particle size and silver particle size. Statistically significant results were weld strength after contact bounce at 400 amperes peak, weight loss after 10,000 operations at 141 amperes peak, and weight loss and resistance after interruption at 1,920 amperes peak. For the Ag-WC-C composition tested, the use of fine graphite and fine silver powders led to enhanced electrical performance.

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微观结构对Ag-WC-C触点材料电性能的影响

研究了不同微观结构的银-碳化钨-石墨触点对触点侵蚀、粘接、电阻和电流中断的影响。测试的参数是石墨粒度和银粒度。统计上显著的结果是，接触弹跳后的焊接强度在400安培的峰值，10,000次操作后的重量损失在141安培的峰值，以及中断后的重量损失和电阻在1920安培的峰值。对于测试的Ag-WC-C成分，使用细石墨和细银粉可以提高电气性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238)

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