Diffusion bonding process for aluminum and aluminum alloys

Details Diffusion bonding process for aluminum and aluminum alloys Diffusion bonding process for aluminum and aluminum alloys

1990-07-03

1990-12-18

Heinrich, Sam

Metal fusion bonding

Process

Diffusion type

228120, 228124, 228265, 228209, 228234, 22826312, 22826317, B23K 120, B23K 2000, B23K10102, B23K10316

Patent

active

049780549

ABSTRACT:
A method of forming diffusion bonds between aluminum and aluminum alloy saces by coating the surfaces with molten AgNO.sub.3 and then decomposing the AgNO.sub.3 to form a thin uniform layer of silver on the surfaces before forming the diffusion bond. The AgNO.sub.3 coating and decomposition in treatment permanently breaks up the Al.sub.2 O.sub.3 coatings on the aluminum or aluminum alloy surfaces, making diffusion bonding possible.

REFERENCES:
patent: 4650108 (1987-03-01), Gallagher

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