Nickel-palladium-chromium-boron brazing alloy

Details Nickel-palladium-chromium-boron brazing alloy Nickel-palladium-chromium-boron brazing alloy

C - Chemistry, Metallurgy

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C

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C22C 19/05 (2006.01) B23K 35/30 (2006.01) B23K 35/32 (2006.01)

Patent

CA 1196806

NICKEL-PALLADIUM-CHROMIUM-BORON BRAZING ALLOY ABSTRACT OF THE DISCLOSURE An improved brazing alloy, particularly suited for use in high temperature gas turbine engines, has a composition range which exhibits X-ray inspection capability, improved stress rupture properties, good ductility and oxidation resistance up to 1400°F. The brazing alloy consists essentially of, by weight, about 20-80% Pd, 2-13% Cr, 1-4% B, balance being Ni and incidental impurities. The brazing alloy is capable of brazing in the 1800-2000°F temperature range and is less costly than Au-bearing brazing alloys currently in use for brazing in this temperature range.

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