Brazing agent and a brazing sheet both comprising an aluminum al

Details Brazing agent and a brazing sheet both comprising an aluminum al Brazing agent and a brazing sheet both comprising an aluminum al

1992-12-21

1994-07-19

Heinrich, Samuel M.

Metal fusion bonding

Solder form

228224, 148 24, B23K 25363

Patent

active

053300904

ABSTRACT:
A brazing agent comprises an aluminum alloy which contains a flux, the agent having an apparent density of 90% or more of a theoretical density, the aluminum alloy comprises in addition to the flux: aluminum element; and silicon element at about 3-15% by weight of all the elements other than the flux, so that the ratio in weight of all the elements to the flux is from 99.9:0.1 to 70:30. The aluminum alloy may further contain one or more elements selected from a group consisting of zinc, tin and indium, at about 0.1-5%, 0.01-0.5% and 0.01-0.5% by weight of all the elements, respectively. A brazing sheet may be of such a structure that a core sheet made of aluminum or its alloy has at least one surface clad with a skin layer which has a thickness of 10 .mu.m or more for each surface.

REFERENCES:
patent: 3667111 (1972-06-01), Chartet
patent: 4901909 (1990-02-01), George
patent: 4981526 (1991-01-01), Kudo et al.
patent: 5100048 (1992-03-01), Timsit
patent: 5173126 (1992-12-01), Ogura et al.
Metals Handbook Ninth Edition, vol. 6, "Brazing of Aluminum Alloys", pp. 1022-1032.

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