Aluminum alloy brazing sheet, method for manufacturing the same, aluminum alloy sheet, and heat exchanger
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United States of America Patent
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Nov 14, 2023
Grant Date -
Oct 28, 2021
app pub date -
Jul 6, 2021
filing date -
Oct 16, 2015
priority date (Note) -
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Abstract
An aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using flux includes a core material of aluminum or aluminum alloy, and a brazing material of aluminum alloy including Si of 4.0 mass % to 13.0 mass % and cladding one side surface or both side surfaces of the core material. One or both of the core material and the brazing material includes any one or two or more types of X atoms (X is Mg, Li, Be, Ca, Ce, La, Y, and Zr). The aluminum alloy brazing sheet is a brazing sheet in which oxide particles including the X atoms and having a volume change ratio of 0.99 or lower with respect to an oxide film before brazing heating are formed on a surface thereof, by brazing heating.
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