Aluminum alloy brazing sheet and method for manufacturing the same

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United States of America Patent

PATENT NO 11819956
SERIAL NO

17600705

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using a flux includes a brazing material cladded onto at least one side surface of a core material. An oxide is formed on a surface of the aluminum alloy brazing sheet by brazing heating, the oxide including any one or two or more of Mg, Li, and Ca and having a volume change ratio of 0.990 or less to a surface oxide film formed before brazing heating, and an atomic molar ratio of Mg, Li, and Ca to Al in the oxide formed on the surface of the aluminum alloy brazing sheet before brazing heating is 0.50 or less. The present invention provides an aluminum alloy brazing sheet having excellent brazability in brazing in an inert gas atmosphere without using a flux, and a method for manufacturing the same.

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Patent Owner(s)

Patent OwnerAddress
UACJ CORPORATION1-7-2 OTEMACHI CHIYODA-KU TOKYO 1000004 ?1000004

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Suzuki, Taichi Tokyo, JP 28 9
Tanaka, Hirokazu Tokyo, JP 406 3974
Yamayoshi, Tomoki Tokyo, JP 39 147

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