Coating processes – Coating by vapor – gas – or smoke – Metal coating
Patent
1990-10-09
1991-12-10
Pianalto, Bernard
Coating processes
Coating by vapor, gas, or smoke
Metal coating
4272551, 427319, 427399, C23C 1600
Patent
active
050716786
ABSTRACT:
A process for forming a diffusion coating to the surface of a metal article. The process is particularly adapted for forming diffusion aluminide coatings on metal blades and vanes used in gas turbine engines. According to the invention, halide vapor is caused to react with a source of aluminum to form an aluminum rich halide gas. This gas then reacts with the part surface to form the aluminide coating. A key aspect of the invention relates to the timing of the reaction between the halide vapor and the source of aluminum.
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Formation and Degradation Mechanisms of Aluminide Coatings on Nickel-Base Superalloys by G. W. Goward, D. H. Boone and G. S. Giggins--Transaction of ASM.
Mechanisms of Formation of Diffusion Aluminide Coatings on Nickel-Base Superalloys by G. W. Goward and D. H. Boone--Oxidation of Metals; vol. 3, No. 5.
Grybowski Edward J.
Olson Walter E.
Pianalto Bernard
Rashid James M.
United Technologies Corporation
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