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U.S. Department of Energy
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Fluxing agent for metal cast joining

Patent ·
OSTI ID:874849
A method of joining an aluminum cast member to an aluminum component. The method includes the steps of coating a surface of an aluminum component with flux comprising cesium fluoride, placing the flux coated component in a mold, filling the mold with molten aluminum alloy, and allowing the molten aluminum alloy to solidify thereby joining a cast member to the aluminum component. The flux preferably includes aluminum fluoride and alumina. A particularly preferred flux includes about 60 wt. % CsF, about 30 wt. % AlF.sub.3, and about 10 wt. % Al.sub.2 O.sub.3.
Assignee:
Alcoa Inc. (Pittsburgh, PA)
Patent Number(s):
US 6474397
Application Number:
09/766023
OSTI ID:
874849
Country of Publication:
United States
Language:
English

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