Welding aluminium alloys
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United States of America Patent
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-
Jul 24, 1990
Grant Date -
N/A
app pub date -
Feb 26, 1988
filing date -
Feb 24, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Welded structures composed of aluminium alloy components are protected from white zone and exfoliation corrosion by means of a surface layer applied over the weld bead and consisting of an aluminium alloy containing 0.02 to 0.4% by weight of indium. Other elements which may be present include zinc 0.1 to 1.5%; manganese, 0.02 to 0.5%; tin, 0.12 to 0.50%; gallium, 0 to 0.2%; and magnesium, 0.01 to 6%. The surface coating may be applied by arc or flame spraying or by welding.
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