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Influence of silicon on friction and wear of iron-cobalt alloysSliding friction and wear experiments were conducted with ternary ordered alloys of iron and cobalt containing various amounts of silicon to 5 weight percent. The friction and wear of these alloys were compared to those for binary iron-cobalt alloys in the ordered and disordered states and to those for the conventionally used bearing material, 440-C. Environments in which experiments were conducted included air, argon, and 0.25percent stearic acid in hexadecane. Results indicate that a ternary iron - cobalt - 5-percent-silicon alloy exhibits lower friction and wear than the simple binary iron-cobalt alloy. It exhibits lower wear than 440-C in all three environments. Friction was lower for the alloy in argon than in air. Auger analysis of the surface of the ternary alloy indicated segregation of silicon at the surface as a result of sliding.
Document ID
19720014847
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Buckley, D. H.
(NASA Lewis Research Center Cleveland, OH, United States)
Brainard, W. A.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 2, 2013
Publication Date
April 1, 1972
Subject Category
Machine Elements And Processes
Report/Patent Number
E-6708
NASA-TN-D-6769
Report Number: E-6708
Report Number: NASA-TN-D-6769
Accession Number
72N22497
Funding Number(s)
PROJECT: RTOP 114-03
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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