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Boundary film for structural ceramic materials [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
22 pages : digital, PDF file
Additional Creators
Argonne National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Structural ceramic materials, like metals, will require lubrication if they are to be used extensively for tribological applications. The use of thin soft metallic coatings (specifically Ag) as a boundary film during mineral oil lubrication of silicon nitride (Si₃N₄) and zirconia (ZrO₂) ceramic materials was investigated in this study. With a pin-on-flat contact configuration in reciprocating sliding, the steady friction coefficient was reduced by a factor of 2 (0.14 −0.16 vs. 0.06--0.07) when the flats were coated with Ag. Also, with Ag coatings the wear of pins was reduced to an unmeasurable level, whereas, in the absence of Ag coatings specific wear rates of ≈2 × 10{sup −9} -- 4 × 10{sup −8} mm³/Nm and ≈7 × 10{sup −8} -- 2 × 10{sup −7} mm³/Nm were measured for Si₃N₄ and ZrO₂ pins respectively. In addition to preventing direct contact between pins and flats, thereby reducing wear, the Ag coatings also act as a solid lubricant, help dissipate flash heating, and accelerate modification of the λ ratio.
Report Numbers
E 1.99:anl/cp--75342
E 1.99: conf-930414--3
conf-930414--3
anl/cp--75342
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
05/01/1992.
"anl/cp--75342"
" conf-930414--3"
"DE93004871"
9. international conference of wear of materials,San Francisco, CA (United States),13-17 Apr 1993.
Hsieh, J.H.; Fenske, G.R.; Erdemir, A.; Erck, R.A.; Nichols, F.A.; Ajayi, O.O.
Funding Information
W-31109-ENG-38
View MARC record | catkey: 14455201