Title:
ALUMINUM ALLOY BRAZING SHEET
Document Type and Number:
WIPO Patent Application WO/2024/048723
Kind Code:
A1
Abstract:
The present invention is an aluminum alloy brazing sheet comprising a core material, a brazing material, and a sacrificial positive electrode material. The core material is composed of an aluminum alloy containing, in terms of mass%, 1.3-1.8% of Mn, 0.6-1.1% of Si, 0.6-1.3% of Cu, and 0.05-0.3% of Zr. The brazing material is composed of an aluminum alloy containing 6.0-13.0% of Si. The sacrificial positive electrode material is composed of an aluminum alloy containing 1.3-1.8% of Mn, 0.4-0.9% of Si, 2.0-8.0% of Zn, and 0.05-0.3% of Zr. The distribution density of an Al-Mn-Si-based intermetallic compound in which the equivalent circle diameter is at least 0.01 μm and less than 1.0 μm contained in the pre-brazing core material is 0.65×106 per mm2 to 5.0×106 per mm 2, and the distribution density of an Al-Zr-based intermetallic compound is 0.05×106 per mm2 to 0.5×106 per mm2.
Inventors:
KAWAKAMI TAKAYUKI (JP)
YOSHINO MICHIHIDE (JP)
YOSHINO MICHIHIDE (JP)
Application Number:
PCT/JP2023/031822
Publication Date:
March 07, 2024
Filing Date:
August 31, 2023
Export Citation:
Assignee:
MA ALUMINUM CORP (JP)
International Classes:
C22C21/00; B23K1/00; B23K1/19; B23K35/22; B23K35/28; C22F1/00; C22F1/04; F28F19/06; F28F21/08
Domestic Patent References:
| WO2019189427A1 | 2019-10-03 | |||
| WO2017169492A1 | 2017-10-05 |
Foreign References:
| JP2010095758A | 2010-04-30 | |||
| JP2019108597A | 2019-07-04 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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