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Ornament parts

A technology for decorative parts and substrates, applied in the field of decorative parts, can solve the problems of unreached film peeling, corrosion, low brightness, etc., and achieve the effect of color tone improvement, beautiful color tone, and lightness improvement

Inactive Publication Date: 2010-08-11
CITIZEN WATCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, Au plating, Au-Ni plating, Au-Pd plating, etc. are widely used for decorative parts, but these coatings are also soft and cannot be used to eliminate damage during use.
[0005] In addition, the ion plating method can enumerate the method of coating and forming a titanium nitride film, etc., but because the internal stress of the titanium nitride film is high, there is a shortcoming that it is difficult to satisfy the adhesion and easily peel off, and none of them can solve the problem of film peeling. degree of complete resolution
In addition, when peeling occurs, the soft material itself is exposed, and this part is corroded and cannot be used as a part
In addition, when only coated with a titanium nitride film, although the color tone of the appearance is golden, the lightness is low and lacks a sense of luxury, so it is difficult to be used for decorations.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Arbitrary base material 14 is arranged in the vacuum device, Ar and nitrogen are introduced after carrying out vacuum evacuation in the vacuum device, and the mixed gas plasma of Ar and nitrogen is generated, and in the mixed gas plasma atmosphere whose pressure is maintained at 0.2Pa, A TiN layer is formed as the underlayer 13 on the surface of an arbitrary base material 14 by a DC sputtering method using Ti. Furthermore, using Pt in the same gas plasma atmosphere at the same pressure, the reflective layer 12 was formed on the underlayer 13 by a DC sputtering method. Further, in the same gas plasma atmosphere at the same pressure, an Au layer was formed on the reflective layer 12 by a DC sputtering method using Au, thereby forming the finishing layer 11 . The film thickness is a set value, and the film formation time is adjusted so that the TiN layer constituting the bottom layer 13 is 0.8 μm, the finishing layer 11 composed of Au is 0.01 μm (10 nm), and the total film...

Embodiment 2～24

[0090] Same as Example 1, introduce Ar and nitrogen after carrying out vacuum exhaust in the vacuum apparatus, produce the mixed gas plasma of Ar and nitrogen (or introduce Ar, nitrogen and CH 4 and generate a mixed gas plasma of Ar, nitrogen and carbon or hydrocarbons), in a mixed gas plasma atmosphere with a pressure of 0.2 Pa, use Hf, Ti or Zr to form HfN, HfCN, TiN, TiCN, The ZrN or ZrCN layer serves as an underlayer of any base material, thereby forming the underlayer 13 . Furthermore, in the same gas plasma atmosphere at the same pressure, the reflective layer 12 was formed on the under layer 13 by DC sputtering using Ru, Pd, Rh, Ag, Os, Ir, Pt. Further, in the same gas plasma atmosphere at the same pressure, Au or an Au alloy is used to coat the reflection layer 12 with Au or an Au alloy by a DC sputtering method to form the finishing layer 11 . The film thickness is a set value, and the HfN, TiN, TiCN or ZrN layer constituting the bottom layer 13 is adjusted to 0.8 μm...

Embodiment 25～47

[0092] Same as Example 1, introduce Ar and nitrogen after carrying out vacuum exhaust in the vacuum apparatus, produce the mixed gas plasma of Ar and nitrogen (or introduce Ar, nitrogen and CH 4 and generate a mixed gas plasma of Ar, nitrogen and carbon or hydrocarbons), in a mixed gas plasma atmosphere with a pressure of 0.2 Pa, use Hf, Ti or Zr to form HfN, HfCN, TiN, TiCN, The ZrN or ZrCN layer serves as an underlayer of any base material, thereby forming the underlayer 13 . Furthermore, in the same gas plasma atmosphere at the same pressure, the reflective layer 12 was formed on the under layer 13 by DC sputtering using Ru, Pd, Rh, Ag, Os, Ir, Pt. Further, in the same gas plasma atmosphere at the same pressure, Au or an Au alloy is used to coat the reflection layer 12 with Au or an Au alloy by a DC sputtering method to form the finishing layer 11 . Here, the thicknesses of the reflective layer and the finishing layer were adjusted to arbitrary thicknesses, and the film fo...

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Abstract

To provide a golden ornament part having an Au-containing hard film on the surface which is characterized by exhibiting both gloss and color tone inherent in gold and having high lightness and high quality. A golden ornament part provided with a hardened layer which is composed of a primary layer constituted of nitride, carbide or carbonitride of one or more metals selected from among Ti, Zr and Hf, a finish layer made of Au or an Au alloy of arbitrary composition such as Au-Ni alloy or Au-Cu-Pd alloy, and a reflective layer that is made of a metal having a reflectance higher than that of the finish layer, namely, Ru, Pd, Rh, Ag, Os, Ir, Pt or the like and that is formed between the primary layer and the finish layer. Thus, the invention brings about high-lightness and high-quality golden ornament parts which effectively exhibit both gloss and color tone inherent in gold.

Description

technical field [0001] The present invention relates to a decorative part consisting of a base material and a hardened layer on the base material, and more particularly to a decorative part having a gold-toned hardened layer whose surface, especially the outermost layer, contains gold. Background technique [0002] Widely used in decorative parts such as straps, case, bezel, back cover, clasp, buckle, crown, piercing, earrings, rings, spectacle frames, pendants, brooches, necklaces, bracelets, etc. Soft substrates that are easier to process parts are stainless steel, Ti and Ti alloys, brass, etc. However, decorative parts obtained by processing these soft base materials have been pointed out to be a serious problem of deterioration in appearance quality due to damage or the like during use. This is mainly because the surface hardness of the soft substrate itself is as low as about Hv=200 in terms of Vickers hardness, and various surface hardening treatments have been attemp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/16A44C27/00C23C14/06C22C5/02
CPCC23C14/0015A44C27/006C23C14/0664C22C5/02Y10T428/12576Y10T156/1093
Inventor 早川万贵村田靖
Owner CITIZEN WATCH CO LTD
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