DocumentCode :
3525147
Title :
Comparison of coefficient of friction and contact resistance during sliding wear on clad gold-nickel surfaces
Author :
Gabel, Nicole ; Hardee, Harry ; Lees, Philip
Author_Institution :
Connector Lubricant Technol. LLC, Las Cruces, NM, USA
fYear :
2001
fDate :
2001
Firstpage :
271
Lastpage :
281
Abstract :
This paper presents analysis of experimental sliding wear data for four hard-gold flash over gold-diffused nickel material systems (GF-DGNi). The surface hardness of the DGNi material was altered by varying both the gold surface concentration and the amount of gold reduction after the diffusion anneal. These material systems were evaluated for unlubricated and lubricated sliding wear durability. The lubricant used was a 6-ring polyphenyl ether, OS-138, that was applied by dipping the specimens in a 2.50% solution of OS-138 in a propylene glycol monomethyl ether carrier. A gold flash palladium connector pin and a strip of metal that had been clad with the gold-nickel material system were mated to form a pseudo-crossed-rod configuration for each of these sliding wear experiments. Sliding wear experiments were conducted at 50 g and 150 g normal load. The amplitude of the motion was 1.14 mm with a velocity of 1 mm/s. Each experiment was conducted for a minimum of 2000 wear cycles and five replications were made for each experimental test condition. A new sliding wear test machine and software program were developed for this test series to appropriately handle the clad metal samples and to allow simultaneous measurement of coefficient of friction and electrical contact resistance during each wear cycle
Keywords :
contact resistance; electrical contacts; electronic equipment testing; gold; hardness; lubrication; nickel; sliding friction; wear; 1 mm/s; 1.14 mm; Au-NiAu; DGNi material; OS-138 six-ring polyphenyl ether lubricant; clad gold-nickel surfaces; clad metal samples; coefficient of friction; contact resistance; diffusion anneal; electrical contact resistance; gold flash palladium connector pin; gold reduction; gold surface concentration; gold-nickel material system; hard-gold flash over gold-diffused nickel material systems; lubricated sliding wear durability; metal strip; motion amplitude; motion velocity; normal load; propylene glycol monomethyl ether carrier; pseudo-crossed-rod configuration; sliding wear; sliding wear experiments; sliding wear test machine; sliding wear test software program; surface hardness; test condition; test replications; unlubricated sliding wear durability; wear cycle; wear cycles; Annealing; Anti-freeze; Contact resistance; Friction; Gold; Lubricants; Nickel; Palladium; Software testing; Surface resistance;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Contacts, 2001. Proceedings of the Forty-Seventh IEEE Holm Conference on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-6667-0
Type :
conf
DOI :
10.1109/HOLM.2001.953222
Filename :
953222
Link To Document :
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