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Fundamental considerations for future solid lubricantsProperties important to the performance of solid lubricants are discussed. Those properties include shear characteristics, coherence between particles, resistance to cold flow, adherence to the substrate, applicable chemical thermodynamics and kinetics of materials and environments, polymorphism, and rheology. The following generalizations are made: (1) chemical thermodynamics and kinetics are powerful tools for use in determining the useful environments and methods of application for solid film lubricants; (2) the primary requirement for a solid lubricant is low shear strength; (3) the rheology of solid film constituents and formulations is likely to be of vital importance to performance and life; and (4) adherence and mobility of surface films is another primary requirement for long lived solid lubricants.
Document ID
19770026407
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Johnson, R. L. (NASA Lewis Research Center Cleveland, OH, United States)
Sliney, H. E. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
September 11, 1969
Subject Category
Nonmetallic Materials
Report/Patent Number
E-5241
NASA-TM-X-52659
Meeting Information
Meeting: Conf. on Solid Lubricants
Location: Kansas City, MO
Country: United States
Start Date: September 9, 1969
End Date: September 11, 1969
Sponsors: AFML, Midwest Res. Inst.
Accession Number
77N33351
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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