Decorative black wear protection coating

Details Decorative black wear protection coating Decorative black wear protection coating

1987-01-13

1988-07-19

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Inorganic materials only containing at least one metal atom

427 38, 428472, B32B 900, C09D 100

Patent

active

047582804

ABSTRACT:
Conventional black coatings for objects of common use usually formed as a carbon layer or porous metal layers, have a deficient wear resistance and surface quality. The resistant high gloss black coatings according to the invention comprise oxycarbonitrides, the proportion of carbon. Preferably the layer comprises an oxycarbonitride of an alloy of Ti, Zr and Hf, the oxygen component between 40 and 60 atom percent. Use of the invention is mainly for decorative utility objects, e.g. watch cases.

REFERENCES:
patent: 3492100 (1970-01-01), Roubin
patent: 3872136 (1975-03-01), Middelhoek
patent: 4212670 (1980-07-01), Shveikin et al.
patent: 4357382 (1982-11-01), Lambert et al.
patent: 4476102 (1984-10-01), MeCandish et al.
patent: 4643952 (1987-02-01), Kurakata

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