By Topic

Gaseous contaminants modify the friction and wear response of precious metal electrical contact alloys

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
L. E. Pope ; Sandia Nat. Lab., Albuquerque, NM, USA ; D. E. Peebles

An in situ electrical contact resistance and friction coefficient measuring device has been installed in a scanning Auger microprobe. A pin-on-plate experimental configuration is used. This tribology system has been used to characterize the friction, wear, and electrical contact resistance of a Pd-alloy pin (ASTM B540) sliding on an Au-alloy plate (ASTM B541). Studies, with and without H2S in the atmosphere, of wear in 1.6×10-6-Torr O2, 700-Torr 5% O 2 in N2, and 700-Torr He are reported. The presence of H2S reduces the friction coefficient and decreases the wear track width on the Au alloy. The lower friction is associated with absorption and reaction of the H2S with the Au-alloy plate. In the ambients containing H2S, large accumulations of S in wear tracks are observed; however, no increase in the electrical contact resistance occurs. In the 700-Torr ambients containing H2S, Cu segregates to the wear track surfaces to the exclusion of other metallic elements and forms Cu2S layers. A concomitant shift occurs in the S and Cu Auger peak positions when the Cu2S film thickens

Published in:

IEEE Transactions on Components, Hybrids, and Manufacturing Technology  (Volume:11 ,  Issue: 1 )