| 摘要 |
Deposition of a colored inorganic layers on the surface of a product having a copper or copper alloy base material using a metal salt forming reactive chemical, with defatting of the product surface with prior production of a preoxidation layer of oxides of the base material, and wetting of the preoxidation layer by the reactive chemical. An independent claim is included for: a plate- or strip product with the copper or copper alloy base layer as described. |
