Housing made using a coated metal material it

    公开(公告)号:JP5369986B2

    公开(公告)日:2013-12-18

    申请号:JP2009185257

    申请日:2009-08-07

    Abstract: PROBLEM TO BE SOLVED: To provide a coated metallic material having excellent flat part coating film corrosion resistance and high conductivity, and capable of executing a high-speed operation, and a manufactured product using the same. SOLUTION: The coated metallic material comprises a metal base material, a Zn-Ni alloy plating layer provided thereon, and a chromium-free chemical conversion coating film further provided thereon. The Zn-Ni alloy plating layer has Ni content of 10-15 mass%, and has cracks in an interface between the chemical conversion coating film and itself. The number of areas surrounded by the cracks viewed in an observed image is 2,000-150,000/mm 2 when observing the surface of a member to be obtained by removing the chemical conversion coating film from the coated metallic material by a scanning electron microscope. The chemical conversion coating film is formed of aqueous chemical conversion solution containing urethane-based aqueous resin, phosphate compound, and vanadium compound, and its deposit per unit area is 10-1,000 mg/m 2 . COPYRIGHT: (C)2011,JPO&INPIT

Patent Agency Ranking