| 摘要 |
PURPOSE:To improve the strength, corrosion resistance, etc., of the title clad material to be obtained by using an Al alloy with a specific composition as a cladding material and cladding at least one side of a core material of Al alloy having an electric potential nobler than that of the above, cladding material with this cladding material. CONSTITUTION:An alloy having a composition consisting of, by weight, 0.05-5% Ni, 0.3-10% Zn, 0.01-5% Mg, further one or more kinds among 0.001-0.5% Cr, 0.001-0.3% Zr, 0.001-1.5% Hf, 0.001-0.5%, Ti, and 0.0001-0.1% B, and the balance Al with inevitable impurities is used as a cladding material. Subsequently, at least one side of a core material consisting of an alloy of Al-Mn type, etc., having an electric potential nobler by >=50mV than the above cladding material is clad with the above cladding material, by which a clad material is prepared. If necessary, one side of the core material is clad with the above cladding material, and further, the other side is clad with an Al-alloy brazing filler metal containing >=5% Si, and/or Cu is further added by 0.05-2% to the composition of the above cladding material. |
