Coating film by ion plating

Details Coating film by ion plating Coating film by ion plating

1985-09-30

1987-02-17

Pianalto, Bernard D.

Stock material or miscellaneous articles

Composite

Of metal

204192N, 427 38, 428698, B32B 900

Patent

active

046439528

ABSTRACT:
A protective and decorative coating film of a beautiful black color which is composed of a mixture of titanium nitride and titanium carbide can be deposited on the surface of various metallic articles of personal ornament use such as watch cases by the techniques of ion plating in which the gaseous atmosphere of low pressure contains argon, nitrogen and an aliphatic hydrocarbon compound such as ethylene in a limited proportion. It is disclosed that the adhesion strength of the coating film to the substrate surface is largely influenced by the oxygen content in the coating film so that it is preferable to decrease the content of oxygen in the atmosphere to such an extent that the oxygen content in the thus formed coating film does not exceed 40% in the atomic ratio.

REFERENCES:
patent: 4480010 (1984-10-01), Sasanuma et al.

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