Stock material or miscellaneous articles – Composite – Of metal
Patent
1996-02-26
1997-06-03
Silverberg, Sam
Stock material or miscellaneous articles
Composite
Of metal
427399, 428651, 148253, 416241R, 416241B, B22F 704
Patent
active
056353030
ABSTRACT:
The surface of an aluminide is treated to make it less chemically reactive. In particular, this treatment inhibits oxidation of the aluminide at high temperatures. According to the invention, one coats the aluminide with a solution that containing phosphoric or phosphorous acid, and then one heats the aluminide, so as to calcine the coating. The phosphoric or phosphorous acid reacts with the aluminide to form a surface that resists oxidation. One can use this process to coat the blades of a gas turbine, or to coat other aluminide structures intended for use in high-temperature environments.
REFERENCES:
patent: 2926123 (1960-02-01), Simon
patent: 3176933 (1965-04-01), Clemmons
patent: 4718482 (1988-01-01), Iwama
Eilberg William H.
Silverberg Sam
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