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Rose gold plating layer and preparation method therefor

A rose gold and coating technology, applied in the direction of metal layered products, chemical instruments and methods, metal material coating technology, etc., can solve the problems of low appearance quality and large color difference of rose gold coating, so as to ensure the appearance quality and small color difference Effect

Inactive Publication Date: 2016-02-10
SHENZHEN SENTAI METAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a kind of rose gold coating for the problems of relatively large color difference and low appearance quality after the surface of the rose gold coating is worn out in the prior art.

Method used

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  • Rose gold plating layer and preparation method therefor

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preparation example Construction

[0029] Simultaneously, the present invention also provides the preparation method of above-mentioned rose gold coating, comprising:

[0030] S1. Fix the substrate in the coating chamber of the vacuum ion coating machine, heat the coating chamber to 180-220°C and evacuate to 8×10 -3 Below Pa;

[0031] S2. Introduce argon gas of 1-10Pa, and glow-clean for 8min-10min under the bias voltage of -500--600V;

[0032] S3, when the bias voltage is -200~-400V, the vacuum degree is 3×10 -1 Under the condition below Pa, bombard the titanium target for 2 minutes;

[0033] S4, when the bias voltage is -100 ~ -150V, the vacuum degree is 6×10 -1 Under the condition below Pa, continuously feed nitrogen and acetylene for 15 minutes to form a titanium carbonitride layer on the surface of the substrate; the flow rate of the nitrogen gas is 300-400 sccm, and the flow rate of the acetylene is 20-35 sccm;

[0034] S5, when the bias voltage is -100~-150V, the vacuum degree is 3.5×10 -1 Under the...

Embodiment 1

[0044] This embodiment is used to illustrate the rose gold coating disclosed in the present invention and its preparation method.

[0045] 1. Preparation of titanium carbonitride layer

[0046] The polished 316 stainless steel sheet (12mm×25mm) undergoes pre-coating treatment such as wax removal and oil removal at 80°C, hangs up and dries, and then puts it into a vacuum ion coating machine. The coating chamber is heated to 200°C and vacuumed to 10 -3 Pa. According to the arc ignition method, 2 Pa working gas Ar (purity 99.99%) is introduced through the tantalum tube, and the arc ignition power supply is connected. Under the bias voltage of -500V, positive ions of Ar gas continuously bombard the tantalum tube to make the temperature reach 2000- At 2400K for 8 minutes, the tantalum tube produces thermionic emission, and the abnormal glow discharge immediately turns into an arc discharge, and the plasma beam is drawn out under the action of the electric field and the focused mag...

Embodiment 2

[0050] This embodiment is used to illustrate the rose gold coating disclosed in the present invention and its preparation method.

[0051] 1. Preparation of titanium carbonitride layer

[0052] The polished 316 stainless steel sheet (12mm×25mm) undergoes pre-coating treatment such as wax removal and oil removal at 80°C, hangs up and dries, and then puts it into a vacuum ion coating machine. The coating chamber is heated to 200°C and vacuumed to 10 -3 Pa. According to the arc ignition method, 8Pa working gas Ar (purity 99.99%) is introduced through the tantalum tube, and the arc ignition power supply is turned on. Under the bias voltage of -500V, the positive ions of Ar gas continuously bombard the tantalum tube to make the temperature reach 2000- At 2400K for 8 minutes, the tantalum tube produces thermionic emission, and the abnormal glow discharge immediately turns into an arc discharge, and the plasma beam is drawn out under the action of the electric field and the focused ...

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Abstract

The invention provides a rose gold plating layer for overcoming the problem that in the prior art, after surface abrasion, the rose gold clad layer is relatively great in chromatic aberration and low in appearance quality. The rose gold plating layer comprises a titanium carbonitride layer and a copper-gold alloy layer positioned on the surface of the titanium carbonitride layer, wherein the chroma system coordinate LAB values of the carbon titanium nitride layer are as follows: the L value is 68-70, the A value is 9-12 and the B value is 15-18; the chroma system coordinate LAB values of the copper-gold alloy layer are as follows: the L value is 84-87, the A value is 9-12, and the B value is 15-18. Meanwhile, the invention further discloses a preparation method for the rose gold plating layer. The chromatic aberration of the titanium carbonitride layer and the copper-gold alloy layer of the rose gold plating layer is small. Even if the copper-gold alloy layer on the surface is abraded, the appearance quality of the rose gold plating layer is not obviously affected.

Description

technical field [0001] The invention relates to a rose gold coating on the surface of a hardware piece and a preparation method thereof. Background technique [0002] For the sake of aesthetics, at present, the surface of many clocks, mobile phones, jewelry and other hardware is electroplated, and a layer of gold is vacuum-plated on the shell of mobile phones and watches. [0003] Among the gold alloy series for jewelry, Rose Gold (RG for short) has become a fashion trend in the watch and jewelry industry at home and abroad because of its gorgeous and elegant color. Electroplated rose gold plating is also loved by consumers. Due to serious environmental pollution problems, traditional water gold plating technology has been gradually replaced by vacuum gold plating technology. Vacuum plating technology is not only environmentally friendly, but also the coating prepared by this technology has high purity, uniform thickness, compactness and good bonding force with the substra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/04B32B9/00C23C14/46C23C14/06
Inventor 范伟华
Owner SHENZHEN SENTAI METAL TECH CO LTD
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