Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1979-08-20
1981-11-24
Lewis, Michael L.
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
75170, 75171, 428678, 428679, B32B 1504
Patent
active
043025153
ABSTRACT:
Brazing of metal parts employing a thin, homogeneous, ductile, filler metal foil is disclosed. The brazing foil, useful for brazing stainless steels, is less than about 0.0025 inch thick and has a composition consisting essentially of 0 to about 4 atom percent iron, 0 to about 21 atom percent chromium, 0 to about 19 atom percent boron, 0 to about 12 atom percent silicon, 0 to about 22 atom percent phosphorus and the balance nickel and incidental impurities. In addition to containing the foregoing elements within the above-noted composition ranges, the composition must be such that the total of iron, chromium and nickel ranges from about 76 to 84 atom percent and the total of boron, silicon and phosphorus ranges from about 16 to 24 atom percent. The ductile foil permits fabrication of preforms of complex shapes which do not require binders and/or fluxes necessary for brazing powders presently used to braze stainless steels and nickel base alloys.
REFERENCES:
patent: 3856513 (1974-12-01), Chen et al.
patent: 3871836 (1975-03-01), Polk et al.
patent: 4038041 (1977-07-01), Duvall et al.
patent: 4169744 (1979-10-01), D'Silva
"Semalloy Brazing Alloys", Sema-Alloys Tech. Bull. No. BA 65, (1965).
Ruhl, R. C. et al., "Splat Quenching of Iron-Nickel-Boron Alloys", Trans AIME, vol. 245, pp. 253-257.
DeCristofaro Nicholas J.
Sexton Peter
Allied Corporation
Buff Ernest D.
Fuchs Gerhard H,.
Lewis Michael L.
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