Carbide/fluoride/silver self-lubricating composite
AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorHarold E. Sliney
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Abstract
A self-lubricating, friction and wear reducing composite material for use over a wide temperature spectrum from cryogenic temperature to about 900.degree. C. in a chemically reactive environment comprising silver, barium fluoride/calcium fluoride eutectic, and metal bonded chromium carbide.
Claims11
A self-lubricating, friction and wear reducing composite material for use over a wide temperature spectrum from cryogenic temperature to about 900.degree. C. in a chemically reactive environment, consisting essentially of:
- (a) a first component comprising between about 60-80 percent by weight metal-bonded chromium carbide;
- (b) a second component comprising between about 10-20 percent by weight soft noble metal;
- and,
- (c) a third component comprising between about 10-20 percent by weight metal fluoride mixture.
In a self-lubricating, wear control composite material of the type wherein fluorides of metals selected from group I or II of the periodic table are interspersed throughout an alloy matrix, the improvement comprising
- (a) hard carbides, and,
- (b) a metallic alloy matrix containing dispersed fluoride solid lubricants.
Dependencies are inferred from the claim text.