Metallic internal coating method

Details Metallic internal coating method Metallic internal coating method

1981-03-23

1982-06-01

Hoffman, James R.

Coating processes

Interior of hollow article coating

Coating by vapor, gas, mist, or smoke

427250, 427252, 427253, C23C 1302

Patent

active

043328431

ABSTRACT:
A method for applying a metallic coating to inner wall surfaces of a fluid-cooled turbomachinery blading member employs a substantially dry coating powder mixture which includes inert filler powder having a nonuniform powder size blend and a coating powder source which reacts with a halide activator to generate a coating vapor. The coating powder mixture is retained within a portion of the blading member during heating to generate the vapor. Blading members can be repaired and fluid-cooling passage exit openings can be resized.

REFERENCES:
patent: 3598638 (1971-08-01), Levine
patent: 3667985 (1972-06-01), Levine et al.
patent: 3837901 (1974-09-01), Seybolt
patent: 3900613 (1975-08-01), Galmiche et al.
patent: 3951642 (1976-04-01), Chang et al.
patent: 4031274 (1977-06-01), Bessen
patent: 4208453 (1980-06-01), Baldi

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