ROOF HAVING EXCELLENT BEAUTY AND CORROSION RESISTANCE AND NICKEL - COPPER ALLOY-CLAD BOARD FOR BUILDING MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a new roof having quite a new heavy black tone, an extremely excellent corrosion resistance and a little surface stain due to a lapse of a time, and also to provide a material for a building material. ;SOLUTION: A nickel - copper alloy-clad board is obtained by cladding a nickel - copper alloy having a thickness of 3 μm to 30% or less of an entire board thickness on one side surface or both side surfaces of a base material board (an ordinary copper, stainless steel or other metal). The roof comprises a nickel - copper oxide film formed by high-temperature heating at 600 to 1,200°C and provided on a surface of the nickel - copper alloy. The roof has the excellent beauty and corrosion resistance. A nickel - copper alloy-clad board for the building material is provided.;COPYRIGHT: (C)2003,JPO