Research on Fretting Resistance and Fretting Wear Property of Ni-Au Contact Pair

2011 IEEE 57th Holm Conference on Electrical Contacts (Holm) Pub Date : 2011-10-06 DOI:10.1109/HOLM.2011.6034785

Xueyan Lin, Liang-jun Xu, Yan-Chao Shao, Guoping Luo, Hong-Xue Zhang

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引用次数: 7

Abstract

Au-Au plated contact pairs have long been the most frequently used in electrical and telecommunication system due to their outstanding electrical, physical and chemical properties. However, the increasingly high cost of gold plated connectors forces the manufacturers to seek some inexpensive substitution due to serious global competition. Ni and/or Ni alloy are naturally chosen to make Ni-Au contact pairs. In this paper, Ni-Au contact pairs, that is, Ni is used as probe and gold plating as coupon, are done fretting researches. Fretting tests are finished at the condition of fretting amplitude 200 ¿Ym, fretting speed 400¿Ym/s, 3 various normal forces and 5 different number of fretting cycles, 3 repeat times for every fretting conditions. Contact resistance is recorded by capture card with speed 14 data/fretting cycle and measured at constant DC current 100mA and limited voltage 1V. Morphology and element composition of fretting wear track are observed and analyzed to study the fretting process and mechanism of Ni-Au contact pairs.

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Ni-Au接触副微动阻力及微动磨损性能研究

由于其优异的电学、物理和化学性能，Au-Au镀触点对长期以来一直是电气和电信系统中最常用的。然而，由于严重的全球竞争，镀金连接器的成本越来越高，迫使制造商寻求一些廉价的替代品。自然选择Ni和/或Ni合金来制造Ni- au接触对。本文对镍金接触对，即以镍为探针，镀金为衬垫，进行了微动研究。在微动幅值200 μ m、微动速度400 μ m/s、3种不同法向力、5种不同次数的微动循环条件下完成微动试验，每种微动条件重复3次。接触电阻由捕获卡记录，速度为14数据/微动周期，在恒定直流电流100mA和限制电压1V下测量。对微动磨损轨迹的形貌和元素组成进行了观察和分析，研究了Ni-Au接触对的微动过程和机理。

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2011 IEEE 57th Holm Conference on Electrical Contacts (Holm)

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