Patent ID: 9095934
Filing Date: 2015-08-04
Classification: B23K,B32B,C22C,F28F,Y10T

Abstract:
1. A high corrosion-resistant aluminum alloy brazing sheet comprising: a core material of comprising an aluminum alloy; a sacrificial anode material cladded on one surface of said core material; and a filler material comprising an Al/Si-based alloy and cladded on another surface of said core material, wherein said sacrificial anode material comprises an aluminum alloy which contains Si falling within a range of about 2.5-about 7.0 mass %, Zn falling a range of about 1.0-about 5.5 mass %, Fe falling within a range of about 0.05-about 1.0 mass %, and which comprises as balance Al and inevitable impurities, wherein a clad thickness of said sacrificial anode material falls within a range of about 25-about 80 μm and wherein a value (X) is determined by the following formula (1) is at most 150: wherein Sic (mass %) is a content of Si; Znc (mass %) is a content of Zn; and T (μm) is a clad thickness of said sacrificial anode material and wherein an existence density of Si particles having a projected area diameter of at least 1.0 μm is at most 5,000/mm