Aluminum-alloy plate and joined body as well as automobile member using the same: United States Patent 9669604

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Description

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(as of Mar 12,2021 21:59:53 UTC – Details)


An aluminum-alloy plate ( 10 ) equipped with an aluminum-alloy substrate ( 1 ) and an aluminum-oxide film ( 2 ) formed on the surface of the aluminum-alloy substrate ( 1 ), wherein: the aluminum-oxide film ( 2 ) contains at least one type of additional element having a P-B ratio of 1.00 or more, zirconium in the amount of 0.01-10 atomic percent, and magnesium in the amount of 0.1 or more and less than 10 atomic percent; and the total amount of additional elements contained in the aluminum-oxide film ( 2 ) is 0.010-5.0 atomic percent. As a result, it is possible to provide: an aluminum-alloy plate which exhibits excellent post-degreasing-water-wettability stability even when in a high-temperature, high-humidity environment; and a joined body and a vehicle member which use the same. >

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