Verfahren zur Herstellung dekorativer Gegenstände

摘要

A decorative article with a whitish gold color that can retain an exceptionally beautiful appearance over a long period of time, a surface processing method manufacturing such decorative articles, and a timepiece having such decorative parts. The surface processing method has a step (2b) for forming a primary coat (40) on at least part of the surface of base material (2), and a step (2c) for forming a film (3) composed of a Au-Pd-Fe-In alloy containing 0.1 to 10 wt% Pd, 0.1 to 8 wt% Fe, and 0.1 to 10.0 wt% In using a dry plating method. The primary coat (40) is a buffer layer for buffering the potential difference between the base material (2) and film (3). The film (3) is preferably formed in a dry plating method using multiple targets of different metal compositions.