COLOURING METHOD FOR DECORATING A METAL SURFACE BY ION BEAM COATING

摘要

The present invention relates to a method for producing a color to give a decorative effect by coating a transparent metal oxide on the metal surface by ion beam auxiliary deposition, a kind of dry plating. Specifically, a metal oxide is used as an evaporation source and oxygen or nitrogen as a gas of an ion beam. The present invention relates to a method for manufacturing a decorative color development of a metal product that can generate various colors by changing the color tone of the interference using.;In the present invention, a cylindrical ion beam auxiliary deposition apparatus is used, and an electron beam evaporation source with a shutter is placed on one side of the bottom. Metal parts made of stainless steel are mounted on the jig located on the ceiling. The electron beam evaporation source uses a metal oxide with a purity of 99.5% or more as a raw material, and a Kauffman type ion gun is installed toward the jig next to it.;After the installation, the chamber is closed, the vacuum pump is turned on, and when the base pressure reaches the desired value, the electron beam evaporation source is activated to evaporate the metal oxide raw material and simultaneously generate the ion beam with the ion gun. It shoots toward the product mounted on the jig, opens the shutter, and performs vacuum coating to the desired thickness. At this time, the opening time of the shutter is an integer multiple of the jig revolution period so that a uniform thickness coating is applied between the products.;As described above, the present invention can not only create various color effects of the coating layer by coating the surface of the decorative metal product by ion beam deposition, but also use metal oxide as an evaporation source during ion beam deposition and use oxygen or oxygen as the ion beam gas. By using nitrogen to change the color of the interference color of the metal oxide coating coated on the surface of the metallic product having a gloss, it is possible to effect various colors.