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High gloss decorative rhodium plating layer plating solution

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 good stability

Active Publication Date: 2020-10-30
JINCHUAN GROUP LIMITED +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • High gloss decorative rhodium plating layer plating solution
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of high-gloss decorative rhodium-plated layer electroplating solution, this electroplating solution is mixed by the component of following concentration: metal rhodium mass volume content is the rhodium sulfate solution of 1g / L, and mass volume concentration is 40g / L sulfuric acid solution, mass The polyethylene glycol whose volume concentration is 0.1g / L, and the quinoline oxide whose mass volume concentration is 0.1g / L.

[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...

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: metal rhodium mass volume content is the rhodium sulfate solution of 10g / L, and mass volume concentration is 100g / L sulfuric acid solution, mass Volume concentration is the polyethylene glycol of 10g / L, and the mass volume concentration is the quinoline oxide of 10g / L.

[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: metal rhodium mass volume content is the rhodium sulfate solution of 5g / L, mass volume concentration is 70g / L sulfuric acid solution, mass volume The polyethylene glycol whose volume concentration is 5g / L, and the oxidation-4-methylisoquinoline whose mass volume concentration is 5g / 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 plating solution. The plating solution is mixed by the following concentrations of components: a rhodium sulfate solution with a metal rhodium massic volume content of 1 to 10g / L, a sulfuric acid solution with a massic volume concentration of 40 to 100g / L, a wetting agent with a massic volume concentration of 0.1 to 10g / L and a compound with a general formula of R-C9H7NO and a massic volume concentration of 0.1 to 10g / L; and the compound with the general formula of R-C9H7NO is used as a brightener and a brightening agent, wherein R is alkyl or alkoxy with 1 to 6 carbon atoms on a straight chain or a branched chain. The plating solution provided by the invention is concise in formula; the compound with the general formula of R-C9H7NO is used as the brightener and the brightening agent, so that the brightness of a rhodium plating layer after electroplating is 90 + / -0.3, the performance of the hodium plating layer is stable, the utilization rate of metal rhodium is as high as 99%, and the waste of raw materials is reduced. At the same time, an electrolytic deposition bath is good in 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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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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