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White rigid decorative member

A decorative component, hard technology, applied in the direction of transportation and packaging, vacuum evaporation plating, coating, etc., can solve the problems of low damage resistance, film thickness cannot be thickened, low hardness of Cr coating film, etc., to achieve durability Effects of improved damage resistance, improved damage resistance, and high damage resistance

Active Publication Date: 2013-05-08
CITIZEN WATCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low corrosion resistance of the Mo coating film, there is a problem that it cannot be directly used
In addition, although it is proposed to adopt a Cr coating film with good brightness, color tone, low spattering and high-quality feeling, the film hardness of the Cr coating film is low, and the damage resistance cannot be obtained sufficiently. In addition, since the corrosion resistance is very high, there are Problems such as difficult peeling in the manufacturing process
On the other hand, as the outermost layer, Nb carbide film and Ta carbide film with high hardness and corrosion resistance are also proposed, but because of their low adhesion to the base material, the film thickness cannot be thickened, and the damage resistance Low, the brightness is also slightly low, therefore, these coating films also have the problem that they cannot be used directly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] The first embodiment of the white hard decorative component of the present invention adopts figure 2 , image 3 and Figure 4 Be explained. figure 2 is a schematic cross-sectional view of a white hard decorative member 20, image 3 is a diagram showing the change in hardness and brightness corresponding to the amount of methane gas introduced, Figure 4 is a damage resistance measurement chart of the white rigid decorative member 20 .

[0110] The composition of the sputtering target in Example 1 is a sintered body of 45wt% Mo and 55wt% Nb. A SUS316L material specified in JIS was used as the base material 21 , and an adhesion layer 22 composed of a 0.1 μm MoNb alloy lower oxide was formed on the base material 21 by a sputtering method. Then, while introducing a trace amount of oxygen, a 0.2 μm gradient adhesion layer 23 of a MoNb alloy oxycarbide film in which methane is gradually increased is formed. Then, a 2.2 μm thin-film wear-resistant layer 24 composed of ...

Embodiment 2

[0122] use Figure 5 , Figure 6 , Figure 7 A second embodiment of the white rigid decorative member of the present invention will be described. Figure 5 is a schematic cross-sectional view of a white hard decorative member 30, Figure 6 is a graph showing the change in hardness and brightness corresponding to the amount of methane gas introduced, Figure 7 is a graph showing the damage resistance measurement of the white rigid decorative member 30 .

[0123] The composition of the sputtering target in Example 2 is a sintered body of 30wt% Mo and 70wt% Ta. A SUS316L material specified in JIS was used as the base material 31 , and an adhesion layer 32 composed of a 0.1 μm MoTa alloy lower oxide was formed on the base material 31 by sputtering. Then, a 0.2 μm gradient adhesion layer 33 of a MoTa alloy oxycarbide film in which methane gas is gradually increased is formed. Then, a 2.0 μm thin-film wear-resistant layer 34 composed of a MoTa alloy carbide film was formed. T...

Embodiment 3

[0136] use Figure 8 , Figure 9 , Figure 10 A third embodiment of the white rigid decorative member of the present invention will be described. Figure 8 is a schematic cross-sectional view of a white hard decorative member 40, Figure 9 is a graph showing the change in hardness and brightness corresponding to the amount of methane gas introduced, Figure 10 is a graph showing the damage resistance measurement of the white rigid decorative member 40 .

[0137]The composition of the sputtering target in Example 3 is a sintered body of 50wt%Mo, 25wt%Nb, and 25wt%Ta. Since Mo, Nb, and Ta are in continuous solid solution, they can be adjusted to any ratio. A SUS316L material specified in JIS was used as the base material 41 , and an adhesion layer 42 composed of a 0.1 μm MoNbTa alloy lower oxide was formed on the base material 41 by sputtering. Then, a 0.2 μm gradient adhesion layer 43 of a MoNbTa alloy oxycarbide film in which methane gas is gradually increased is formed....

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Abstract

Provided is a white rigid decorative member which has significantly improved scratch resistance and wear resistance and which has a high-grade color tone. Also provided is a product which can have a color tone, corrosion resistance, and etching performance that have been controlled at will. This white rigid decorative member is configured using films of alloys of a metal which shows high adhesion to metals and has high brightness (metal having poor corrosion resistance; Mo or W), a metal which gives a high-hardness film and has high corrosion resistance (metal having poor adhesion; Nb or Ta), and a metal which enhances corrosion resistance (Cr, Ti, Hf, or Zr). The decorative member is configured of a base and, formed thereon, an alloy adhesion layer which shows high adhesion, a gradient-alloy adhesion layer deposited while increasing the content of a reactant gas in a gradient manner, a wear-resistant layer having high hardness, and a topping-alloy gradient layer deposited while reducing the content of a reactant gas in a gradient manner.

Description

technical field [0001] The present invention relates to watch exterior parts with metallic colors, accessories such as glasses and jewelry, decorative components such as decorations, and sporting goods, and particularly relates to high-grade color feeling and excellent long-term damage resistance, wear resistance, and corrosion resistance. White hard decorative components. Background technique [0002] Traditionally, in order to improve the damage resistance of exterior parts, glasses, jewelry, clocks and other accessories, decorations, sporting goods, etc., the outermost layer is formed on the outermost layer in order to have a high-end appearance. High-brightness platinum coating. For example, in Patent Document 1, a base layer is formed on the substrate, a titanium carbide layer is formed on the surface of the base layer by dry plating, and a decorative film made of platinum or a platinum alloy is formed on the surface of the titanium carbide layer by dry plating. l...

Claims

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Application Information

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IPC IPC(8): C23C26/00C23C14/06C23C14/08
CPCC23C14/165C23C14/34C23C14/0015C23C14/0635C09D5/08C23C14/083Y10T428/265
Inventor 高崎康太郎
Owner CITIZEN WATCH CO LTD
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