FORMATION OF PROTECTIVE COATINGS BYELECTROLYTIC CODEPOSITION OF A NICKEL-COBALT MATRIX AND CERAMIC PARTICLES

摘要

The invention relates to a method of protection against oxidation and erosion by friction of parts subjected in operation at temperatures below 600degre (s). / p & & p & according to the invention, is deposited by electrolysis in the part to be protected, a coating of nickel, cobalt, comprising a uniform dispersion of ceramic particles chosen from the group of carbides and 5 of the oxides, in particular, al2 o3, cr2 o3 the content by mass of the ceramic particles being between 3,5% and 10%). / p & & p & these coatings improve the resistance to friction of the materials in heterogeneous pairings.