Cobalt-palladium-silicon-boron brazing alloy

Details Cobalt-palladium-silicon-boron brazing alloy Cobalt-palladium-silicon-boron brazing alloy

1981-10-09

1983-08-02

Rutledge, L. Dewayne

Alloys or metallic compositions

Containing over 50 per cent metal but no base metal

420435, 420463, C22C 3000, C22C 500, C22C 1907

Patent

active

043965776

ABSTRACT:
A brazing alloy, particularly suited for use in high temperature gas turbine engines has a composition range which exhibits X-ray inspection capability, adequate stress rupture properties, ductility and oxidation resistance. The brazing alloy composition consists essentially of about 25-95% Pd, up to about 5% Si, up to about 3.5% B, balance being Co and incidental impurities, all percentages being by weight. The brazing alloy is capable of brazing in the 1800.degree.-2100.degree. F. temperature range and is less costly than current Au-bearing brazing alloys currently in use for brazing in this temperature range.

REFERENCES:
patent: 2856281 (1958-10-01), Cremer et al.
patent: 3053652 (1962-09-01), Mobley et al.
patent: 3089769 (1963-05-01), Huschke, Jr. et al.
patent: 3155499 (1962-04-01), Mobley
patent: 3764307 (1973-10-01), Barb et al.
patent: 3853548 (1974-12-01), Fairbanks et al.

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