Method for applying a low coefficient of friction coating
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United States of America Patent
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Issued Date -
May 3, 2007
app pub date -
Nov 3, 2005
filing date -
Nov 3, 2005
priority date (Note) -
Abandoned
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Abstract
The present invention provides a composite coating and a method of preparing a composite coating resistant to galling and fretting. The coating is applied to a substrate and includes a mixture of hard carbide particles in an alloy matrix or oxides and solid lubricant particles captured in a binder. The coating is produced by using a thermal spray process to apply a powder containing both the hard face or oxide phases as well as the self lubricating phases. Thus, the applied coating of the present invention combines the benefits achieved with previous thermal spray coatings in terms of wear, abrasion, heat and corrosion with those afforded by solid lubricants. In addition, the coating of the present invention provides consistently distributed surface porosity to retain liquid lubricant on the coating surface.
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