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Electric contact phenomena in ultra clean and specifically contaminated systems.Contact resistance has been used to characterize the processes of physical contact in metallic systems with ultraclean surfaces. The contact resistance versus load curves of iron and two cobalt alloys were used to demonstrate the existence of surface work hardening and interfacial creep during contact as well as the fracture characteristics of an interfacial junction as the load is removed. The presence of an adsorbed film of hydrogen or hydrogen ions on iron completely changes the contact process. A comparison of the contact resistance versus load data for ultrapure iron, and iron-cobalt alloy, and a cobalt molybdenum-chromium was used to illustrate the effect of substrate mechanical properties on static adhesion and the ability to convert these data for the estimation of the dynamic coefficient of friction under the particular experimental conditions.
Document ID
19720052449
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Keller, D. V., Jr.
(Syracuse University Syracuse, N.Y., United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1971
Subject Category
Physics, Solid-State
Meeting Information
Meeting: Electrical contacts - 1971
Location: Chicago, IL
Start Date: October 13, 1971
End Date: October 15, 1971
Sponsors: NASA
Accession Number
72A36115
Distribution Limits
Public
Copyright
Other

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