# US 2013/0155822 A1 · Method of manufacturing a decorative article, a decorative article, and a timepiece

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- Number: US 2013/0155822 A1
- Document ID: US20130155822A1
- Status: Published application
- Kind: A1
- Application number: 13/686,151
- Filed: 2012-11-27
- Published: 2013-06-20
- Earliest claimed: 2009-11-25
- Assignees: Seiko Epson Corporation
- Inventors: Atsushi KAWAKAMI; Yuzuru TSUKAMOTO
- Web page: https://patentgrep.com/patent/US20130155822A1

## CPC

- B05D 3/107: {Post-treatment of applied coatings}
- B44D 5/00: Surface treatment to obtain special artistic surface effects or finishes (pretreatment or after-treatment of surface coated by applying liquids B05D3/00; obtaining special surface effects by applying liquids or other fluent materials to surfaces B05D5/00; surface shaping of plastics, e.g. embossing, B29C59/00)
- C23C 14/0015: {characterized by the colour of the layer}
- C23C 28/00: Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C 28/322: {only coatings of metal elements only}
- C23C 28/34: {including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates}
- C23C 28/347: {with layers adapted for cutting tools or wear applications}
- C23C 28/36: {including layers graded in composition or physical properties}
- G04B 47/04: with attached ornaments or amusement apparatus {(decorated cases see G04B45/00)}
- B33Y 80/00: Products made by additive manufacturing
- Y10T 428/31678: Of metal
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- B44D: PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES (surface treatment in general, see the relevant places, e.g. applying liquids or other fluent materials B05)
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- G04B: MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built-in means operating any device at pre-selected times or after predetermined time intervals G04C23/00; clocks or watches with stop devices G04F7/08)
- B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method of manufacturing a decorative article, including a first coating formation step of forming a first coating of primarily TiN on a substrate; a second coating formation step of forming a second coating on the first coating by means of a dry plating method using a target containing 70.0 wt %≦85.0 wt % Au and 15.0 wt %≦30.0 wt % Cu; a heat treatment step of promoting formation of a solid solution of the constituents of the second coating by applying a heating process that heats the substrate on which the first coating and the second coating are disposed to 300° C.≦395° C. and then applying a cooling process; and an acid treatment step that, of the constituents of the second coating to which the heating process was applied, removes the constituents not forming a solid solution by applying an acid treatment.

## Claims

### Claim 1

A decorative article prepared by a process comprising:
a first coating formation step of forming a first coating of primarily TiN on a substrate;
a second coating formation step of forming a second coating on the first coating by means of a dry plating method using a target containing 70.0 wt %≦85.0 Au and 15.0 wt. %≦30.0 wt % Cu;
a heat treatment step of promoting formation of a solid solution of the constituents of the second coating by applying a heating process that heats the substrate on which the first coating and the second coating are disposed to 300° C.≦395° C. and then applying a cooling process; and
an acid treatment step that, of the constituents of the second coating to which the heating process was applied, removes the constituents not forming a solid solution by applying an acid treatment.

### Claim 2 (depends on 1)

The decorative article described in claim 1, wherein
the decorative article is an external part of a timepiece.

### Claim 3 (depends on 1)

A timepiece comprising the decorative article described in claim 1.