Metal treatment – Process of modifying or maintaining internal physical... – Producing or treating layered – bonded – welded – or...
Patent
1996-04-09
1999-05-11
Kastler, Scott
Metal treatment
Process of modifying or maintaining internal physical...
Producing or treating layered, bonded, welded, or...
148428, 148442, 420586, 428680, C21D1/09
Patent
active
059024216
ABSTRACT:
A braze material for repairing an article, and particularly industrial gas turbine engine nozzles formed from nickel-base superalloys. The braze material is composed of a nickel-base braze alloy that is preferably in powder form and dispersed in a suitable vehicle, such as a binder that forms a slurry with the powder. The braze alloy is formulated to be capable of withstanding the high temperature operating environment of an industrial gas turbine nozzle, and to have a melting temperature below the recrystallization temperature of the superalloy to be repaired. A desirable composition for the braze alloy, in weight percent, about 14 to 24 chromium, about 6 to 15 cobalt, about 0.7 to 2.5 boron, about 1.0 to 2.0 titanium, about 0.6 to 1.0 aluminum, about 1.0 to 1.4 tungsten, about 0.4 to 0.6 columbium, about 0.5 to 0.7 tantalum, and up to about 0.7 iron, with the balance being nickel and incidental impurities.
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General Electric Co.
Hartman Domenica
Kastler Scott
Lampe, Jr. Robert C.
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