JPH0711462A - Golden ornamental parts and their production - Google Patents

Abstract

PURPOSE:To produce golden ornamental parts not causing dermatitis due to allergy to a metal by forming a Ti based coating film and a TiN based coating film on each of various substrates and then carrying out coating with an Au-Fe alloy having a specified compsn. by dry plating. CONSTITUTION:A golden coating film having a compsn. consisting of, by atom, 60-99% Au, 0.5-29% Fe and 0.5-20% inevitable components is formed as the outermost layer on the surface of each substrate of stainless steel, etc., for ornamental parts by dry plating such as vacuum deposition. A Ti coating film may be formed between the surface of the substrate and the golden outermost coating film by evaporating Ti in an atmosphere of an inert gas other than N2, e.g. Ar, He or Ne. A TiN coating film may further be formed between the Ti-based coating film and the golden outermost coating film by evaporating Ti in an atmosphere of gaseous N2. The objective golden ornamental parts not causing allergic dermatitis even by contact with the skin are produced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gold-colored decorative component that does not cause metal allergic dermatitis such as a rash and a method for producing the same.

[0002]

BACKGROUND OF THE INVENTION Conventionally, watch parts such as watch bands, and decorative parts such as rings, necklaces, and earrings, have a high-grade property by forming a gold coating on the outermost layer thereof by using a wet or dry plating method. It imparts a feeling or excellent corrosion resistance. However, the pure gold film is soft and easily worn, and is not preferred because the gold color becomes too dark, and rather, the light gold color tends to be preferred. Gold-palladium alloy film and the like have been formed on the outermost layer of decorative parts.

However, in recent years, allergic dermatitis, which causes a rash due to contact between metal and skin, has been increasing in jewelry such as precious metal necklaces and earrings, and most metal cases have been reported. . Among them, the gold-nickel alloy film and the gold-palladium alloy film are often reported to cause allergic dermatitis.

Iron is an extremely rare metal that causes allergic dermatitis, but a gold-iron alloy obtained by forming a coating on the outermost layer of the above decorative parts by the ion plating method. The color tone of the film is not constant, and moreover,
There were problems such as darkening. As a result of diligent research into what causes this, it has been found that iron is active and a large amount of oxygen, carbon, and nitrogen present in the ion plating apparatus are incorporated into the film.

Therefore, conventionally, allergic dermatitis such as a rash does not occur even when it comes into contact with the skin,
Moreover, the advent of gold decorative parts having a uniform gold color tone is desired.

[0006]

It is an object of the present invention to solve the problems associated with the prior art as described above, and it is extremely unlikely that allergic dermatitis such as a rash will occur even when it comes into contact with the skin, and It is an object of the present invention to provide a decorative part having a uniform gold color tone and a method for manufacturing the same.

[0007]

SUMMARY OF THE INVENTION A first golden decorative component according to the present invention comprises a base material and an outermost layer coating formed on the base material by a dry plating method, and the outermost layer coating is made of gold 60- 99
Atomic% and iron 0.5 to 20 atomic% and unavoidable components 0.5 to 2
It is characterized by containing 0 atomic%.

The second gold-colored decorative component according to the present invention includes a base material, a Ti-based coating film containing an unavoidable component formed on the surface of the base material in an inert gas other than nitrogen, and the Ti-based coating material. The outermost layer coating formed on the system coating by the dry plating method, and the outermost layer coating is 60 to 99 atomic% of gold, 0.5 to 20 atomic% of iron, and 0.5 to 20 atomic% of inevitable components. It is characterized by containing and.

Further, a third golden decorative component according to the present invention comprises a base material and a TiN coating film formed on the surface of the base material.
An outermost layer coating formed on the TiN coating by a dry plating method, and the outermost layer coating is gold 60-99.
Atomic% and iron 0.5 to 20 atomic% and unavoidable components 0.5 to 2
It is characterized by containing 0 atomic%.

Furthermore, a fourth gold-colored decorative component according to the present invention comprises a base material, and a Ti-based coating film containing an unavoidable component formed on the surface of the base material in an inert gas other than nitrogen.
The TiN film formed on this Ti-based film and this TiN film
An outermost layer coating formed on the N coating by a dry plating method, and the outermost layer coating is 60 to 99 atomic% of gold, 0.5 to 20 atomic% of iron, and 0.5 to 20 atomic% of inevitable components.
It is characterized by containing and.

The first method for producing a golden decorative part according to the present invention is to produce 60 to 99 atomic% gold and 0.5 to 20 iron on a base material in an atmosphere of an inert gas other than nitrogen in a dry plating apparatus. It is characterized by forming an outermost layer coating containing atomic% and unavoidable components of 0.5 to 20 atomic%.

The second method for producing a gold-colored decorative component according to the present invention is characterized in that titanium is evaporated on a base material in an atmosphere of an inert gas other than nitrogen in a dry plating apparatus to exist in the dry plating apparatus. A Ti-based coating containing an unavoidable component is formed on the Ti-based coating in the dry plating apparatus under an atmosphere of an inert gas other than nitrogen.
9 atom% and iron 0.5 to 20 atom% and unavoidable components 0.5 to
It is characterized in that the outermost layer coating containing 20 atomic% is formed.

Furthermore, the third of the golden decorative parts according to the present invention
In the method for producing, a titanium film is formed on a substrate by evaporating titanium in a dry plating apparatus under a nitrogen gas atmosphere,
Then, in this dry plating apparatus, 60 to 99 atomic% of gold, 0.5 to 20 atomic% of iron, and 0.5 to 20 atomic% of inevitable components were placed on the TiN coating film in an atmosphere of an inert gas other than nitrogen. It is characterized in that the outermost layer coating containing and is formed.

Furthermore, in the fourth method for producing a golden decorative part according to the present invention, titanium is evaporated on the base material under an atmosphere of an inert gas other than nitrogen, and an unavoidable component existing in the dry plating apparatus is added. A Ti-based coating containing is formed, and then on the Ti-based coating in the dry plating apparatus,
Titanium is evaporated in a nitrogen gas atmosphere to form a TiN film, and then the TiN film is formed in the dry plating apparatus.
On top of the coating, gold 60 ~ in an inert gas atmosphere other than nitrogen.
99 atomic%, iron 0.5 to 20 atomic% and unavoidable component 0.5
It is characterized in that an outermost layer coating containing about 20 atomic% is formed.

In the present invention, it is preferable that the above-mentioned TiN coating film is provided immediately below the outermost coating film of the golden decorative part, and that the Ti-based coating film is provided on the base material.

[0016]

DETAILED DESCRIPTION OF THE INVENTION The golden decorative part and the method for producing the same according to the present invention will be specifically described below.

First, the golden decorative part according to the present invention will be described. The golden decorative part according to the present invention comprises a base material and an outermost layer coating formed on the base material by a vacuum deposition method which is a dry plating method, a sputtering method or an ion plating method, and the outermost layer coating. However, it contains gold, iron and inevitable components in a specific ratio.

In the gold-colored decorative component according to the present invention, a TiN coating film may be present between the base material and the outermost coating film. In particular, the golden decorative part having the TiN coating has excellent adhesion between the outermost coating and the base material.

Further, the golden decorative part according to the present invention comprises argon, helium other than nitrogen, between the base material and the outermost layer coating or between the base material and the TiN coating.
There may be a Ti-based coating formed in an inert gas such as neon and containing an unavoidable component (nitrogen, oxygen, carbon) present in the dry plating apparatus.

The base material used in the present invention may be a material such as metal, plastic, or ceramic, depending on the type of decorative component. In the gold-colored decorative component according to the present invention, the outermost layer coating contains 60 to 99 atom% of gold, preferably 81.5 to 96.5 atom%, and more preferably 8%.
8 to 96.5 atomic%, iron is present at 0.5 to 20 atomic%, preferably 2.5 to 7 atomic%, more preferably 3 to 7 atomic%, and oxygen, carbon, and nitrogen are present. Among these, at least one unavoidable component is present in an amount of 0.5 to 20 atom%, preferably 0.5 to 12 atom%, and more preferably 0.5 to 5 atom%.

When gold, iron and an unavoidable component are present in the above-mentioned proportions in the outermost layer coating, it is possible to prevent the unavoidable components from adversely affecting the color tone of the coating, and to obtain a uniform gold tone. A golden decorative part having is obtained. In particular, in the gold-colored decorative component in which the Ti-based coating is formed under the outermost layer coating, the unavoidable components present in the dry plating apparatus when the Ti-based coating is formed are incorporated in the Ti-based coating. The amount of the unavoidable component taken into the outermost layer coating is significantly smaller than that of the gold-colored decorative component in which the Ti-based coating is not formed under the outermost layer coating, and the color tone of the outermost layer coating becomes more uniform. Also, gold is 88 to 96.5 atomic%, iron is 3 to 7 atomic%, and unavoidable component is 0.5 to 5 atomic%.
The gold color tone of the gold-colored decorative component having the outermost layer coating of the ratio is in the range of 1N-14 to 2N-18 in the Swiss gold plating color standard. The gold-colored decorative component whose gold color tone is in the range of 1N-14 to 2N-18 in the Swiss gold-plating color standard has a specular gloss of L ^* (10.0 to 90.0) a ^* (6.
0) b ^* (3.0) to L ^* (10.0 to 90.0) a
The gold color tone is in the range of ^* (1.0) b ^* (15.0). Where L ^* is the CIE of the International Commission on Illumination (CIE)
It is a lightness index in the 1976 (L ^* a ^* b ^* ) color space, and a ^* and b ^* represent the chromaticness index. The measurement of L ^* , a ^*, and b ^* of the above-mentioned golden color tone was carried out by Suga Test Instruments Co., Ltd. on a specular gloss test piece in accordance with the object color measuring method by the 0-degree visual field XYZ system defined by the CIE standard. Color difference meter SM-2-SCH [integrating sphere method, measuring method: reflection, measuring aperture: 12 mm] is used.

Even in the case of a gold-colored decorative component having an outermost layer coating in which the above-mentioned gold, iron, and unavoidable components deviate from the above proportions, 1N
It may have a golden color tone falling within the range of -14 to 2N-18.

The gold-colored decorative component according to the present invention in which the outermost coating is formed of gold, iron and unavoidable components is extremely unlikely to cause the above-mentioned allergic dermatitis even when it comes into contact with the skin.

The outermost layer coating of the golden decorative part according to the present invention has a thickness of usually 0.05 to 0.5 μm, preferably 0.
It is 1 to 0.3 μm. The thickness of the TiN coating is
0.1 to 10 μm, preferably 0.1 to 2 μm,
The film thickness of the Ti-based coating containing a large amount of unavoidable components is 0.1
˜0.5 μm, preferably 0.2 to 0.3 μm.

The surface state of the outermost layer coating of the golden decorative part according to the present invention is not particularly limited and may be specular gloss or satin finish. Next, a method for manufacturing the golden decorative part according to the present invention will be described.

First, the above-mentioned gold-colored decorative component consisting of a base material and an outermost layer coating is, for example, placed on a base material in an atmosphere of an inert gas other than nitrogen, such as argon, helium or neon, in a dry plating apparatus. 60-99 atomic% gold and 0.5-iron
It is obtained by forming the outermost layer coating containing 20 atomic% and 0.5 to 20 atomic% of the unavoidable component.

Further, the above-mentioned gold-colored decorative component comprising the base material, the Ti-based coating, and the outermost coating is formed on the base material in the dry plating apparatus such as argon, helium, neon, etc. other than nitrogen. Titanium is evaporated in an active gas atmosphere to form a Ti-based coating containing unavoidable components present in the dry plating apparatus. Then, in the dry plating apparatus, a Ti-based coating other than nitrogen is deposited on the Ti-based coating. It is obtained by forming an outermost layer coating containing 60 to 99 atomic% of gold, 0.5 to 20 atomic% of iron, and 0.5 to 20 atomic% of unavoidable components in an active gas atmosphere.

The above-mentioned gold-colored decorative component consisting of the base material, the TiN coating film, and the outermost coating film is formed by evaporating titanium on the base material in a dry plating apparatus under a nitrogen gas atmosphere. Then, in the dry plating apparatus, 60 to 99 atomic% of gold, 0.5 to 20 atomic% of iron, and 0.5% of unavoidable components are formed on the TiN coating under an atmosphere of an inert gas other than nitrogen. It is obtained by forming an outermost layer coating containing about 20 atomic%.

In addition, the above-mentioned gold-colored decorative component comprising the base material, the Ti-based coating, the TiN coating, and the outermost coating, the titanium is vaporized on the base material under an atmosphere of an inert gas other than nitrogen. To form a Ti-based coating containing an unavoidable component present in the dry-plating apparatus, and then, in this dry-plating apparatus, titanium is evaporated under nitrogen gas atmosphere on the Ti-based coating to form a TiN coating. Then, in the dry plating apparatus, 60 to 99 atomic% of gold and 0. 0% of iron were formed on the TiN coating in an atmosphere of an inert gas other than nitrogen.
It can be obtained by forming the outermost layer coating containing 5 to 20 atomic% and inevitable components of 0.5 to 20 atomic%.

In the present invention, the above outermost layer coating is
It can be formed by a sputtering method, a vacuum vapor deposition method or an ion plating method, but it is particularly preferably formed by the ion plating method.

The formation of each coating, particularly the outermost coating by the ion plating method, in the golden decorative part according to the present invention will be described more specifically below. It is preferable that a base material such as a wristwatch band is previously washed with an organic solvent or the like. Also, the inside of the ion plating device is 5 ×
10 ^{−5 to} 1.0 × 10 ⁻⁶ Torr, preferably 1.0 ×
After exhausting to 10 ^{−5 to} 1.0 × 10 ⁻⁶ Torr, the atmosphere gas is 8 × 10 ^{−4 to} 5 × 10 ⁻³ Torr, preferably 1.0 × 10 ^{−3 to} 3.0 × 10 ^−3. Install up to Torr.

In order to obtain the outermost layer coating having a uniform gold color tone, it is preferable that the pressure inside the apparatus before film formation is low, 1 × 10.
It is desirable to evacuate to ⁻⁵ Torr or less, preferably 1 × 10 ⁻⁶ Torr or less. That is, as the pressure inside the apparatus decreases, the amount of unavoidable components inside the apparatus decreases, and the gold color tone becomes uniform.

In the present invention, it is preferable to form the above TiN film from the viewpoint of the adhesion between the outermost layer of the gold-iron alloy film and the substrate, but instead of the TiN film, ZrN, Hf is used.
A gold-based nitride coating such as N may be formed.

In the present invention, a gold-iron mixture may be used as an evaporation source, or two evaporation sources may be provided, gold is used as one evaporation source, and iron is used as the other evaporation source. May be evaporated separately.

When a gold-iron mixture is used as the evaporation source in the present invention, the composition of the outermost layer coating obtained is 60 to 99 gold.
Gold and iron are used so that the atomic% and the iron become 0.5 to 20 atomic%, and specifically, gold 75 to 90 atomic% and iron 10 to 10
25 atomic% gold-iron mixture (or gold-iron alloy)
Is preferably used.

As described above, by controlling the ratio of gold and iron in the evaporation source, it is possible to easily control the color tone of the outermost layer coating of the obtained golden decorative component.

[0037]

EFFECTS OF THE INVENTION In the golden decorative part according to the present invention, since the outermost layer coating contains gold, iron and inevitable components, allergic dermatitis such as rash may occur even if it comes into contact with the skin. It has a very small and uniform gold color tone. In particular, a gold-colored decorative component having a Ti-based coating under the outermost gold-iron alloy film can have a uniform gold color tone. Further, the gold-colored decorative component having the TiN coating has excellent adhesion between the outermost coating and the base material. Among the dry plating methods, the gold-colored decorative component having the outermost layer coating formed by the ion plating method has excellent wear resistance.

According to the method for manufacturing a golden decorative part according to the present invention, a golden decorative part having the above effects can be obtained. Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited to these examples.

[0039]

Example 1 First, a wristwatch case made of stainless steel was washed with an organic solvent, and this wristwatch case was placed in an ion plating apparatus.

Then, the inside of the apparatus is 1.0 × 10 ⁻⁵ Torr.
After evacuation to, argon gas was introduced up to 3 × 10 ⁻³ Torr. Next, a thermoelectron filament and a plasma electrode provided inside the apparatus were driven to form argon plasma. At the same time, it is -5
An electric potential of 0 V was applied to perform bombard cleaning for 10 minutes.

Then, the introduction of argon gas was stopped, and nitrogen gas was introduced into the apparatus up to 2.0 × 10 ^-3 Torr.
Next, after plasma was generated by a plasma gun provided inside the apparatus, titanium was evaporated for 10 minutes to form a TiN coating film with a thickness of 0.5 μm.

Then, the evaporation of titanium and the introduction of nitrogen gas were stopped, and the inside of the apparatus was evacuated to 1.0 × 10 ^-5 Torr.
Next, Argon gas was introduced into the apparatus at 1.0 × 10 ⁻³ Tor.
After introducing up to r to generate plasma, gold 75 atomic%
Of the gold-iron mixture was evaporated, and when the thickness of the gold-iron alloy film became 0.3 μm, the evaporation of the gold-iron mixture was stopped.

The wristwatch case obtained had a uniform gold color tone. This gold color tone was 1N-14 according to the Swiss gold plating color standard. The obtained color tone is L ^* 20.
It was a ^* 1.0b ^* 15.0.

The outermost coating of the obtained wristwatch case is
As a result of analysis by X-ray photoelectron spectroscopy, gold 85 atomic%, iron 8 atomic%, nitrogen 1 atomic%, oxygen 3 atomic%, and carbon 3
It consisted of atomic percent.

Allergic dermatitis did not occur at all even when this wristwatch case was assembled with other wristwatch parts to make a wristwatch and the wristwatch was carried for a total of 1080 hours for 90 days.

[0046]

Example 2 First, a wristwatch case obtained by processing stainless steel and mirror-finishing the surface was washed with an organic solvent, and this wristwatch case was placed in an ion plating apparatus.

Then, the inside of the apparatus is 1.0 × 10 ⁻⁵ Torr.
After evacuation to, argon gas was introduced up to 3 × 10 ⁻³ Torr. Next, a thermoelectron filament and a plasma electrode provided inside the apparatus were driven to form argon plasma. At the same time, it is -5
An electric potential of 0 V was applied to perform bombard cleaning for 10 minutes.

Next, after plasma is generated by a plasma gun provided inside the apparatus, titanium is evaporated for 5 minutes to form a Ti-based film on the surface of the wristwatch case to a film thickness of 0.25 μm. It was evacuated to 1.0 × 10 ⁻⁵ Torr. This Ti-based coating contained a small amount of nitrogen, oxygen, and carbon.

Next, nitrogen gas was added at 2.0 × 10 ⁻³ Tor.
r was introduced into the apparatus and plasma was generated by a plasma gun provided inside the apparatus, and then titanium was evaporated for 10 minutes to form a TiN film on the surface of the Ti-based film to a thickness of 0.5 μm. It was

Then, the evaporation of titanium and the introduction of nitrogen gas were stopped, and the inside of the apparatus was evacuated to 1.0 × 10 ^-5 Torr.
Next, Argon gas was introduced into the apparatus at 1.0 × 10 ⁻³ Tor.
After introducing up to r to generate plasma, gold 75 atomic%
Of the gold-iron mixture was evaporated, and when the thickness of the gold-iron alloy film became 0.3 μm, the evaporation of the gold-iron mixture was stopped.

The wristwatch case obtained had a uniform gold color tone. This gold color tone was 1N-14 according to the Swiss gold plating color standard. The obtained color tone is L ^* 80
It was a ^* 1.0b ^* 15.0.

The outermost coating of the obtained wristwatch case is
As a result of analysis by X-ray photoelectron spectroscopy, gold 87 atom%, iron 8.5 atom%, nitrogen 0.5 atom%, oxygen 1.5 atom%,
And carbon of 2.5 atomic%.

Allergic dermatitis did not occur at all even when this wristwatch case was assembled with other wristwatch parts to make a wristwatch and this wristwatch was carried for a total of 1080 hours for 90 days.

[0054]

Example 3 First, a wristwatch case obtained by processing stainless steel and mirror-finishing the surface was washed with an organic solvent, and this wristwatch case was placed in an ion plating apparatus.

Then, the inside of the apparatus is 1.0 × 10 ⁻⁵ Torr.
After exhausting to 1.0, argon gas is 1.0 × 10 ⁻³ Tor
up to r. Next, a thermoelectron filament and a plasma electrode provided inside the apparatus were driven to form argon plasma. At the same time, a potential of −50 V was applied to the wristwatch case as the base material, and bombard cleaning was performed for 10 minutes.

Next, after plasma is generated by a plasma gun provided inside the apparatus, titanium is evaporated for 5 minutes to form a Ti-based film on the surface of the wristwatch case with a film thickness of 0.25 μm. It was evacuated to 1.0 × 10 ⁻⁵ Torr. This Ti-based coating contained a small amount of nitrogen, oxygen, and carbon.

Next, 1.0 × argon gas was introduced into the apparatus.
After introducing up to 10 ⁻³ Torr to generate plasma,
A gold-iron mixture consisting of 90 atom% of gold and 10 atom% of iron was evaporated, and when the thickness of the gold-iron alloy film reached 0.3 μm, the evaporation of the gold-iron mixture was stopped.

The wristwatch case obtained as described above had a uniform gold color tone. This gold color tone was 2N-18 according to the Swiss gold plating color standard. The color tone obtained was L ^* 60a ^* 6.0b ^* 3.0.

The outermost coating of the obtained wristwatch case is
As a result of analysis by X-ray photoelectron spectroscopy, it consisted of 91 atomic% gold, 3.5 atomic% iron, 0.5 atomic% nitrogen, 2 atomic% oxygen, and 3 atomic% carbon.

When this wristwatch case was assembled with other wristwatch parts to make a wristwatch and the wristwatch was carried for a total of 1080 hours over 90 days, allergic dermatitis did not occur at all.

[0061]

Example 4 First, a wristwatch case obtained by processing stainless steel and mirror-finishing the surface was washed with an organic solvent, and this wristwatch case was placed in an ion plating apparatus.

Then, the inside of the apparatus is 1.0 × 10 ^-6 Torr.
After exhausting to 1.0, argon gas is 1.0 × 10 ⁻³ Tor
up to r. Next, a thermoelectron filament and a plasma electrode provided inside the apparatus were driven to form argon plasma. At the same time, a potential of −50 V was applied to the wristwatch case as the base material, and bombard cleaning was performed for 10 minutes.

Next, after plasma is generated by a plasma gun provided inside the apparatus, titanium is evaporated for 5 minutes to form a Ti-based film on the surface of the wristwatch case to a film thickness of 0.25 μm. It was evacuated to 1.0 × 10 ⁻⁵ Torr. This Ti-based coating contained a small amount of nitrogen, oxygen, and carbon.

Then, argon gas was added to the apparatus at 1.0 ×.
After introducing up to 10 ⁻³ Torr to generate plasma,
A gold-iron mixture consisting of 90 atom% of gold and 10 atom% of iron was evaporated, and when the thickness of the gold-iron alloy film reached 0.3 μm, the evaporation of the gold-iron mixture was stopped.

The wristwatch case obtained as described above had a uniform gold color tone. This gold color tone was 2N-18 according to the Swiss gold plating color standard. The obtained color tone was L ^* 70a ^* 6.0b ^* 3.0.

The outermost coating of the obtained wristwatch case is
As a result of analysis by X-ray photoelectron spectroscopy, it was composed of 92 atomic% gold, 4 atomic% iron, 0.5 atomic% nitrogen, 1.5 atomic% oxygen, and 2 atomic% carbon.

When this wristwatch case was assembled with other wristwatch parts to make a wristwatch and the wristwatch was carried for a total of 1080 hours for 90 days, allergic dermatitis did not occur at all.

Claims (9)

[Claims] 1. A substrate, and an outermost layer coating formed on the substrate by a dry plating method, wherein the outermost layer coating is 60 to 99 atomic% of gold and 0.5 to 20 atomic% of iron. And an unavoidable component of 0.5 to 20 atomic%, a golden decorative part. 2. A substrate, a Ti-based coating containing an unavoidable component formed on the surface of the substrate in an inert gas other than nitrogen, and a Ti-based coating formed on the Ti-based coating by a dry plating method. A gold color comprising an outer layer coating and the outermost layer coating containing 60 to 99 atomic% of gold, 0.5 to 20 atomic% of iron and 0.5 to 20 atomic% of unavoidable components. Decorative parts. 3. A base material and Ti formed on the surface of the base material.
N film and an outermost film formed on the TiN film by a dry plating method, and the outermost film is 60 to 99 atomic% of gold, 0.5 to 20 atomic% of iron and inevitable components of 0. 5-20 atomic% is contained, The golden decorative part characterized by the above-mentioned. 4. A substrate, a Ti-based coating containing an unavoidable component formed on the surface of the substrate in an inert gas other than nitrogen, a TiN coating formed on the Ti-based coating, and An outermost layer coating formed on the TiN coating by a dry plating method, and the outermost layer coating is 60 to 99 atomic% of gold, 0.5 to 20 atomic% of iron, and 0.5 to 20 atomic% of inevitable components. A gold-colored decorative component comprising: 5. The outermost layer coating is formed by an ion plating method.
The golden decorative component according to any one of to 4. 6. A dry plating apparatus on a base material, in an atmosphere of an inert gas other than nitrogen, containing 60 to 99 atomic% of gold and 0.5 of iron.
-20 atom% and 0.5-20 atom% of unavoidable components are formed, The outermost layer coating film is formed, The manufacturing method of the golden decorative part characterized by the above-mentioned. 7. A Ti-based coating film containing an unavoidable component present in the dry plating apparatus is formed on a substrate by evaporating titanium in an atmosphere of an inert gas other than nitrogen in the dry plating apparatus, and then, In this dry plating apparatus, 60 to 99 atomic% of gold, 0.5 to 20 atomic% of iron, and 0.5 to 20 atomic% of unavoidable components were placed on the Ti-based coating in an atmosphere of an inert gas other than nitrogen. A method for producing a gold-colored decorative component, which comprises forming an outermost layer coating containing 8. A TiN film is formed on a substrate by evaporating titanium in a dry plating apparatus under a nitrogen gas atmosphere, and then, in the dry plating apparatus, a TiN film other than nitrogen is formed on the TiN film. A gold-colored decoration characterized by forming an outermost layer coating containing 60 to 99 atomic% of gold, 0.5 to 20 atomic% of iron and 0.5 to 20 atomic% of unavoidable components in an inert gas atmosphere. Manufacturing method of parts. 9. A Ti-based coating film containing an unavoidable component present in a dry plating apparatus is formed on a base material by evaporating titanium in an atmosphere of an inert gas other than nitrogen, and then in the dry plating apparatus. Then, titanium is evaporated on the Ti-based coating in a nitrogen gas atmosphere to form a TiN coating. Then, in the dry plating apparatus, the TiN coating is coated on the TiN coating in an atmosphere of an inert gas other than nitrogen. A method for producing a golden decorative part, which comprises forming an outermost layer coating containing 60 to 99 atomic% of gold, 0.5 to 20 atomic% of iron, and 0.5 to 20 atomic% of an unavoidable component.