Aluminum sheets bonded with cadmium
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United States of America Patent
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Sep 29, 1992
Issued Date -
N/A
app pub date -
Dec 13, 1990
filing date -
Nov 10, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
First and second aluminum members are joined by the steps of (a) dissolving and removing completely the aluminum oxide layer from the surface of each of said first and second members to be joined and replacing each of the aluminum oxide layers with a layer consisting essentially of zinc; (b) plating at least one of the zinc layers with a non-alloy cadmium; (c) assembling and retaining together said first and second aluminum members so that the surfaces to be joined are held in contact with one another and placing said aluminum members in a vacuum; and (d) heating the members while in the vacuum thereby forming a bond between said first and second aluminum members. This produces an article comprising a first aluminum member having a bonded surface comprising a first layer of zinc; a second aluminum member having a bonded surface comprising a second layer of zinc; and an interlayer comprising a solution of cadmium and zinc disposed between said first and second layers, and forming a bond between said first and second layers.
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