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Electroplating solution for high gloss decorative rhodium plating

An electroplating solution and decorative technology, applied in the field of high-gloss decorative rhodium plating layer electroplating solution, can solve problems such as poor color tone, and achieve the effect of simple formula, stable performance and easy maintenance

Active Publication Date: 2021-10-08
JINCHUAN GROUP LIMITED +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of this invention is to provide a kind of high-gloss decorative rhodium-plated layer electroplating solution, to solve the problem of poor tone in the rhodium-plated layer electroplating process of commonly used phosphoric acid electroplating solution / sulfuric acid electroplating solution, make the deposition rhodium coating have close to Characteristics of Silver Whiteness and Brightness

Method used

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  • Electroplating solution for high gloss decorative rhodium plating
  • Electroplating solution for high gloss decorative rhodium plating

Examples

Experimental program
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Effect test

Embodiment 1

[0018] A high-gloss decorative rhodium-plated layer electroplating solution, the electroplating solution is mixed by the following components: 1g / L rhodium sulfate solution, 40g / L sulfuric acid solution, 0.1g / L polyethylene glycol, 0.1 g / L quinoline oxide.

[0019] The electroplating solution provided by the present embodiment is that the size of the pre-plating palladium-nickel alloy was electroplated for 2 minutes on a copper plate plated part of 25x40mm, and the electroplating process parameters are: current density 0.5-2A / dm2, temperature 50 ℃; Based on the micro-imaging Micro-LED surface brightness detection system, the brightness of the rhodium coating is 90.1, and the rhodium coating is close to silver whiteness. A scanning electron microscope image of a rhodium coating on a copper plate is shown in figure 1 shown.

Embodiment 2

[0021] A kind of high-gloss decorative rhodium-plated layer electroplating solution, this electroplating solution is mixed by the component of following concentration: the rhodium sulfate solution of 10g / L, the sulfuric acid solution of 100g / L, the polyethylene glycol of 10g / L, 10g / L L's quinoline oxide.

[0022] The electroplating solution provided by the present embodiment is that the pre-plating palladium-nickel alloy size is 25x40mm copper plate electroplating 2 minutes, electroplating process parameter is: current density 0.5-2A / dm , temperature 50 ℃; Based on the micro-imaging Micro-LED surface brightness detection system, the brightness of the rhodium coating is 90.3, and the rhodium coating is close to silver whiteness.

Embodiment 3

[0024] A kind of high-gloss decorative rhodium-plated layer electroplating solution, this electroplating solution is mixed by the component of following concentration: the rhodium sulfate solution of 5g / L, the sulfuric acid solution of 70g / L, the Polyethylene Glycol of 5g / L, 5g / L Oxygenated-4-methylisoquinoline of L.

[0025] The electroplating solution provided by the present embodiment is that the size of the pre-plating palladium-nickel alloy was electroplated for 2 minutes on a copper plate plated part of 25x40mm, and the electroplating process parameters are: current density 0.5-2A / dm2, temperature 50 ℃; Based on the detection in the micro-imaging Micro-LED surface brightness detection system, the brightness of the rhodium coating is 89.9, and the rhodium coating is close to silver whiteness.

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Abstract

The invention belongs to the technical field of electroplating, and discloses a high-gloss decorative rhodium plating layer electroplating solution, which is formed by mixing the following components: 1-10g / L rhodium sulfate solution, 40-100g / L sulfuric acid Solution, 0.1-10g / L of wetting agent, 0.1-10g / L of the compound of the general formula R-C9H7NO; wherein the general formula is R-C 9 h 7 NO compounds are used as brighteners and whitening agents, and R is a linear or branched alkyl or alkoxy group with 1-6 carbon atoms. The formula of electroplating solution of the present invention is concise, adopts general formula to be R-C 9 h 7 The NO compound is used as brightener and whitening agent, so that the brightness of the rhodium coating after electroplating is 90±0.3, the performance of the rhodium coating is stable, and the utilization rate of metal rhodium is as high as 99%, which reduces the waste of raw materials. At the same time, the electrolytic deposition bath has good stability, can be used continuously, and is easy to maintain.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a high-gloss decorative rhodium plating electroplating solution. Background technique [0002] With the rapid development of the world economy and the continuous improvement of people's living standards, the global jewelry industry has achieved rapid development. While silver ornaments are widely loved by people all over the world, there are performance defects in various aspects such as easy oxidation and blackening, no wear resistance and no corrosion resistance. Therefore, the research and development of bright rhodium-plated layer for silver jewelry is of great significance for ensuring human body safety and improving jewelry brightness and wear resistance. [0003] At present, silver alloy is the most used jewelry precious metal material in the global jewelry industry. However, silver alloys are not resistant to oxidation, are not wear-resistant, and are prone to we...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/52
CPCC25D3/52
Inventor 任志勇张静白延利刘国旗孟俊杰李欢郅欢欢王红梅何艳张宗磊吴芳
Owner JINCHUAN GROUP LIMITED
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