| 摘要 |
PROBLEM TO BE SOLVED: To obtain a low-cost, lightweight metal foil that is used as an electromagnetic wave shielding material, a conductive material or a heat conductive material for a radiating substrate, a current collector of an electrode for a secondary battery, an electrode material or an electrical connection material for a printed wiring board, etc., has a high conductivity and a high thermal conductivity and can be mounted and connected by soldering.SOLUTION: The multilayer-plated metal foil comprises an aluminum foil or an aluminum alloy foil of which at least one surface comprises a zinc-immersion plating layer, a nickel-electroplating layer and a tin-electroplating layer that are formed in this order, wherein the zinc-immersion plating layer contains at least one element chosen from Fe, Co, Ni and Cu. The other surface is not subjected to nickel- and tin-electroplating but is roughened by zinc-immersion plating and, if required, is subjected to pickling after the zinc-immersion plating. |
