FRICTION AND WEAR OF ELECTRODEPOSITED PALLADIUM CONTACTS - THIN-FILM LUBRICATION WITH FLUIDS AND WITH GOLD

被引:8
作者
ANTLER, M
FEDER, M
机构
[1] AT&T Bell Lab, Columbus, OH, USA, AT&T Bell Lab, Columbus, OH, USA
来源
IEEE TRANSACTIONS ON COMPONENTS HYBRIDS AND MANUFACTURING TECHNOLOGY | 1986年 / 9卷 / 04期
关键词
ELECTRODEPOSITION - GOLD AND ALLOYS - Lubricants - LIQUIDS - Lubricants - LUBRICATION - Thin Films - PALLADIUM AND ALLOYS - Wear;
D O I
10.1109/TCHMT.1986.1136665
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Palladium deposits with a thin gold overcoat are less expensive than an equivalent thickness of gold plate. They have, therefore, become an important contact material for high reliability separable electronic connectors. The purpose of the gold overcoat in wiping contacts is to provide a low shear strength interfacial layer, or solid lubricant, thereby lowering the adhesive wear rate of the system. In the present study, the friction and wear of various thicknesses and compositions of gold plate on the palladium were determined in sliding against diffused gold 60Pd40Ag (DG R-156) and a cobalt-hardened gold plate. In some cases, a supplementary coating of a polyphenylether fluid was applied to the contacts. It was found that cobalt-gold electroplate on the palladium was superior to pure soft gold despite its much greater hardness. Furthermore, the polyphenylether markedly improved sliding performance in all cases. These results are discussed in the light of friction and wear theory.
引用
收藏
页码:485 / 491
页数:7
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