PARTS FOR ORNAMENT, ORNAMENT, ELECTRONIC INSTRUMENT AND WATCH

PROBLEM TO BE SOLVED: To provide parts for ornaments excellent in discoloring resistance, corrosion resistance or the like, and ornaments, electronic instruments and watches equipped with the parts. SOLUTION: Exterior parts 1 for watches are ones in which the surface of a base 4 is provided with a s...

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Bibliographische Detailangaben
Hauptverfasser:	TSUKAMOTO WATARU, IMAI KIYOHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES HOROLOGY INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL MECHANICALLY-DRIVEN CLOCKS OR WATCHES METALLURGY PHYSICS PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide parts for ornaments excellent in discoloring resistance, corrosion resistance or the like, and ornaments, electronic instruments and watches equipped with the parts. SOLUTION: Exterior parts 1 for watches are ones in which the surface of a base 4 is provided with a substrate 3 composed of at least one layer and a coating layer 9 composed of Pd or a Pd alloy, and on the surface of the coating layer 9, passive film 2 is formed. The passive film 2 can be formed by immersing it into a soln. of bichromate. As the passive film 2, the one in which color difference between the surfaces of the exterior part 1 for watches with and without the presence of the passive film 2 is regulated to