Patent ID: 7229675

Claim:
A method for depositing a coating on metal machine parts, the coating comprising a plurality of layers, wherein said layers comprise at least one of each of the following: an intermetallic compound (IM) comprised of aluminides of at least one of Ni, Co or Fe, a multiple-component alloy (MCA), oxides and transitional layers of implanted atoms (TM); the method comprising the following steps: 1. cleaning a surface to be coated by ion-plasma etching or sputtering by an ion source; 2. modifying the surface to be coated; 3. depositing a multiple-component alloy to a thickness of 20–60 microns; 4. forming at least one of the transitional layers by ion implantation; 5. effecting ion-plasma deposition of a layer of said intermetallic compound; 6. forming additional transitional layers by ion agitation; 7. forming an oxide layer by depositing a ceramics layer and performing electron beam evaporation of said ceramics layer; 8. annealing in a controlled atmosphere or in a vacuum with a residual pressure of oxygen; and 9. modifying an outer surface of the coating with implantation, wherein the process further comprises the step of diffusion metallization on one of said plurality of layers or on said surface to be coated, said diffusion metallization step occurring before said step of annealing, wherein said diffusion metallization comprises aluminizing, silicon aluminizing or chromium aluminizing to deposit a layer having a thickness of 20–50 microns.