Patent ID: 8158205

Claim:
A method of forming a solid lubricant coating on a substrate, the method comprising the steps of: applying a coating precursor material over the substrate, the coating precursor material comprising: a fluoride eutectic comprising at least one of the group consisting of nickel fluoride/cobalt fluoride, barium fluoride/nickel fluoride, cobalt fluoride/barium fluoride, and barium fluoride/boron oxide, a metal powder having an average particle diameter in a range of about 10 nanometers to about 10 microns, the metal powder containing at least one metal capable of oxidizing at about 535° C. to about 800° C. in the presence of fluoride, and one or more materials selected from the group consisting of a metal oxide, a glass, a carbide, and a nitride, subjecting the coating precursor material over the substrate to a sintering heat treatment to form a first intermediate coating, the sintering heat treatment occurring at a first temperature in an inert atmosphere or a reducing atmosphere; and exposing the first intermediate coating to an oxidizing heat treatment, the oxidizing heat treatment performed in an oxidizing atmosphere at a second temperature that is less than the first temperature to oxidize a portion of the metal powder in the first intermediate coating.