GOLDEN ORNAMENT AND PROCESS FOR PRODUCING THE SAME

摘要

A golden ornament comprising a base material; a Ti coating whose Ti atom content is constant in the direction of coating thickness, formed on the base material in an atmosphere of inert gas other than nitrogen; a TiN gradient coating whose N atom content is sloped in the direction of coating thickness, formed on the Ti coating; a TiN coating whose Ti atom and N atom contents are constant in the direction of coating thickness, formed on the TiN gradient coating; an Au-TiN mixture gradient coating whose Au atom content is sloped in the direction of coating thickness, formed on the TiN coating; and an Au-TiN mixture coating whose Au atom, Ti atom and N atom contents are constant in the direction of coating thickness, formed on the Au-TiN mixture coating. Further, on this Au-TiN mixture coating, there may be formed an Au coating or Au alloy coating whose Au atom content is constant in the direction of coating thickness.