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Cyanide-free cuprous copper-zinc alloy electroplating solution

A technology for electroplating copper and zinc alloys, which is applied in the field of electroplating copper-zinc alloys, can solve the problems of increasing energy consumption in the electroplating process, which is not conducive to energy conservation in the production process, and achieves the effects of reducing power consumption, stable components, and energy conservation

Inactive Publication Date: 2014-10-29
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, divalent copper is used in various cyanide-free systems, which will greatly increase the energy consumption of the electroplating process, which is not conducive to energy conservation in the production process.

Method used

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  • Cyanide-free cuprous copper-zinc alloy electroplating solution
  • Cyanide-free cuprous copper-zinc alloy electroplating solution
  • Cyanide-free cuprous copper-zinc alloy electroplating solution

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specific Embodiment approach 1

[0015] Specific embodiment one: a kind of cyanide-free cuprous electroplating copper-zinc alloy solution of the present embodiment is prepared according to the following steps:

[0016] (1) According to the concentration of cuprous compound is 0.5~40.0g / L, the concentration of stabilizer is 0.2~25g / L, the concentration of cuprous non-cyanide complexing agent is 10~160g / L, the concentration of auxiliary complexing agent Take by weighing cuprous compound, stabilizer, cuprous non-cyanide complexing agent and auxiliary complexing agent respectively for 5 ~ 80g / L; and auxiliary complexing agent were dissolved in 20mL / L hydrochloric acid solution successively, heated and stirred until dissolved to obtain solution A; (3) the cuprous compound weighed in step (1) was added to solution A, stirred until dissolved, and placed Make solution B after 12 hours; (4) be 5~50g / L according to the concentration of zinc chloride, the concentration of brightener is 0.02~2.00g / L, the concentration of...

specific Embodiment approach 2

[0018] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the cuprous compound described in steps (1) and (3) is one of cuprous oxide, cuprous chloride or cuprous bromide , the concentration is 1.0~30.0g / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0019] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the stabilizer described in steps (1) and (2) is vitamin C, sodium hypophosphite, DL-α-tocopherol, p-benzene One or a combination of diphenol, catechol or resorcinol, the concentration is 0.5~20g / L. Others are the same as in the first or second embodiment.

[0020] When the stabilizer of this embodiment is a composition, various stabilizers are combined in arbitrary ratios.

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Abstract

The invention relates to a cyanide-free cuprous copper-zinc alloy electroplating solution, particularly a preparation and application method of the cyanide-free cuprous copper-zinc alloy electroplating solution. The invention aims to solve the problem in controllable coating components in the copper-zinc alloy electroplating process and the problem of high electric power consumption due to adoption of divalent copper in the existing cyanide-free technique. The cyanide-free cuprous copper-zinc alloy electroplating solution is prepared from a cuprous compound, zinc chloride, a cuprous non-cyanide complexing agent, an auxiliary complexing agent, a plating solution stabilizer, a brightening agent and sodium acetate. The cyanide-free cuprous copper-zinc alloy electroplating solution is used under the conditions of 30-75 DEG C and 0.1-3.0 A / dm<2> by using a ruthenium-titanium anode or copper-zinc alloy anode. The cuprous ions can be complexed selectively to control the copper / zinc ratio, and the cuprous ions adopted in the plating solution can lower the electric power consumption and is beneficial to saving the energy sources.

Description

technical field [0001] The invention belongs to the field of copper-zinc alloy electroplating, and relates to a method for preparing and using a cyanide-free cuprous electroplating copper-zinc alloy solution. Background technique [0002] Copper-zinc alloy, also known as brass, has gained a lot of attention due to its gold-like color. Therefore, the copper-zinc alloy coating has obtained large-scale application as an imitation gold coating, especially as a decorative coating for products such as handicrafts, lamps and clocks and watches. Under standard conditions, the potential of cuprous ion reduction to metallic copper is 0.521V ( vs SHE), the reduction potential of copper ions to metallic copper is 0.337V ( vs SHE), and the potential of zinc ion reduction to metallic zinc is -0.76V ( vs SHE). Since the deposition potentials of the two metals in the standard state are very different, the first task to achieve copper-zinc co-deposition is to lower the reduction pote...

Claims

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Application Information

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IPC IPC(8): C25D3/58
Inventor 田栋孙国新崔玉周长利夏方诠张颖
Owner UNIV OF JINAN
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