| abstract |
This treated surface metal comprises a metal and a coating material that is formed on the metal surface. The outermost layer of the coating material is a photocatalyst coating film containing particles having photocatalytic activity and an inorganic-organic composite resin. The volume ratio of the particles having photocatalytic activity in relation to the photocatalyst coating film is within the range of 0.5-50% by volume. The inorganic-organic composite resin contains a siloxane bond and at least one group selected from an aryl group, a carboxyl group, an amino group, a hydroxyl group and an alkyl group having 1-12 carbon atoms. . The coated material has a recessed portion on the outermost surface side surface. The area of the outermost layer is 50-98% of the surface area of the metal when the cladding material is visible in plan, and the surface area of the outermost layer is 101-5000% of the surface area of metal. |