Process for manufacturing ornamental parts and ion plating appar

Details Process for manufacturing ornamental parts and ion plating appar Process for manufacturing ornamental parts and ion plating appar

1983-02-28

1983-11-15

Demers, Arthur P.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204192R, 204298, 427 38, C23C 1500

Patent

active

044154216

ABSTRACT:
Within a vacuum chamber filled with a low-pressure gas atmosphere including nitrogen, titanium is vaporized to coat a titanium nitride film on a surface of an ornamental part such as a watch case by a reactive ion plating method, and a gold film is coated thereon to modulate the color. In this process, the titanium vapor is supplied from an electron beam melting vapor source whereas the gold vapor is supplied from a sputtering vapor source, and the periods both vapors are supplied partly overlap. This process improves the reproducibility of color modulation by coating the gold film and enhances the affinity at the interface between the titanium nitride film and the gold film.

REFERENCES:
patent: 4226082 (1980-10-01), Nishida
patent: 4254159 (1981-03-01), Pulker
Takai Metal Finishing, Apr. 1983, pp. 59-61.

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