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Title:
ALUMINUM ALLOY BRAZING SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/110320
Kind Code:
A1
Abstract:
An aluminum alloy brazing sheet provided with: an aluminum alloy core containing 0.3-1.2% by mass of Si, 0.1-1.5% by mass of Cu, and 0.3-2.0% by mass of Mn, the remainder comprising Al and unavoidable impurities; an aluminum alloy brazing material with which one surface of the core is clad, the aluminum alloy brazing material containing 4.0-13% by mass of Si and the remainder comprising Al and unavoidable impurities; and an aluminum alloy sacrificial anode material with which the other surface of the core is clad, the sacrificial anode material containing 1.0-8.0% by mass of Zn and 0.5-1.5% by mass of Si and the remainder comprising Al and unavoidable impurities; the total number density of Si-containing intermetallic compounds and Si units having a particle diameter of 0.1-1.0 µm present in the sacrificial anode material being 1×103/mm2 to 1×106/mm2. Through the present invention, an aluminum alloy brazing sheet can be provided that has excellent corrosion resistance and fatigue characteristics even in a heat exchanger such as one in which cooling water flows in an alkaline corrosive environment, and that is suitable for an automobile heat exchanger such as a radiator or a heater core.

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Inventors:
IDE TATSUYA (JP)
SHOJI TOMOHIRO (JP)
YAMAMOTO DAI (JP)
Application Number:
PCT/JP2017/043267
Publication Date:
June 21, 2018
Filing Date:
December 01, 2017
Export Citation:
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Assignee:
UACJ CORP (JP)
International Classes:
C22C21/00; B23K35/22; B23K35/28; B23K35/40; C22F1/04; C22F1/00
Domestic Patent References:
WO2015162911A12015-10-29
Foreign References:
JP2009030123A2009-02-12
JP2008261026A2008-10-30
JP2016172897A2016-09-29
JP2016003356A2016-01-12
JPH1180871A1999-03-26
Other References:
See also references of EP 3556874A4
Attorney, Agent or Firm:
ASHITABA INTERNATIONAL PATENT OFFICE (JP)
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