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Status and New Directions for Solid Lubricant Coatings and Composite MaterialsAt one time, solid lubricants were used almost entirely in aerospace applications. Today there is a pronounced trend to use them over a much broader range of applications. For example, self-lubricating polymer-based composites have displaced traditional oil-lubricated, metallic composites for many journal bearings and thrust, washers in applications as diverse as earthmoving machinery and snow blowers to aircraft applications. For moderate temperatures below 200° C, glass filament-wound epoxy bearings with PTFE lubricating liners are useful; for temperatures up to 350° C, graphite fiber reinforced polyimide bearing materials are finding applications. Molybdenum disulfide, graphite, and PTFE are the most widely known and used solid lubricants, and there is increasing interest in the relatively new solid lubricant graphite fluoride. Advanced technology engines such as the adiabatic diesel and the small, efficient gas turbine have severe lubrication and wear problems at temperatures beyond the capabilities of any of these lubricants. Here, self-lubricating ceramics and inorganic composites for use at I000° C or higher are of interest. However, perhaps the most significant new direction for solid lubricant coatings and self-lubricating composites is their steadily increasing use in dry bearings for large volume, moderate temperature applications. This can be attributed to their simplicity of use (no supporting lubricant system needed), light weight, convenience, and general cost effectiveness.
Document ID
19840016987
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Harold E Sliney
(Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1984
Publication Information
Publication: Tribology in the 80's: Volume 2-Sessions 5 to 8
Publisher: National Aeronautics and Space Administration
Subject Category
Composite Materials
Meeting Information
Meeting: International Conference in Tribology in the 80's
Location: Cleveland, OH
Country: US
Start Date: April 18, 1983
End Date: April 21, 1983
Sponsors: National Aeronautics and Space Administration
Accession Number
84N25055
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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