Slurry compositions for diffusion coatings

Details Slurry compositions for diffusion coatings Slurry compositions for diffusion coatings

1998-08-31

2000-08-29

Green, Anthony

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

106 1421, 106 1441, 106 1442, 106403, 106404, 420428, 420528, 148248, 148264, C23C 1026

Patent

active

061102628

ABSTRACT:
Slurry coating compositions are provided for metal substrates, particularly nickel or cobalt-containing alloys, that enable inward-type diffusion aluminide coatings having a substantially uniform coating thickness to be formed thereon. Substantially uniform coating thicknesses are achieved independent of applied slurry composition thickness or application method. The slurry coating composition of the invention comprises a Cr--Al alloy containing about 50 wt % to about 80 wt % Cr in the alloy, LiF in an amount greater than or equal to 0.3 wt % of the Cr--Al alloy, an organic binder, and a solvent.

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B.G. McMordie and A.K. Isaacs, "Slurry Aluminide Coating Processes for Gas Turbine Components at Overhaul," paper presented at The Annual Gas Turbine Conference and Exhibition, Harrogate, United Kingdom, Nov. 1, 1991.
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