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Sn-Zn alloy electroplating solution

An alloy electroplating solution, sn-zn technology, applied in the field of electroplating solution, can solve problems such as increased electroplating costs, and achieve the effect of reducing costs

Inactive Publication Date: 2012-05-09
张家港舒马克电梯安装维修服务有限公司镀锌分公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, cyanide-free silver plating solution has also appeared in the market, which solves the danger caused by the highly toxic cyanide, but still needs to use precious metal silver, which greatly increases the cost of electroplating

Method used

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  • Sn-Zn alloy electroplating solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of Sn-Zn alloy electroplating solution, its material and composition are as follows:

[0023] SnSO 4 26g / L

[0024] ZnSO 4 45g / L

[0025] h 2 SO 4 140g / L

[0026] Citric acid 40mL / L

[0027] Antimony Potassium Tartrate 0.9g / L

[0028] Benzylidene acetone 20g / L

[0029] Non-ionic surfactant 200g / L

[0030] Nonylphenol polyoxyethylene ether 30g / L

[0031] Benzoic acid 70g / L

[0032] Sodium methylene dinaphthalene sulfonate 25g / L

[0033] Niacin 11g / L

[0034] The above materials are mixed evenly in proportion; the anode required for the electroplating of the Sn-Zn alloy electroplating solution is tin with a purity of 99.9%; the current density of the Sn-Zn alloy electroplating solution is 2~4A / dm 2 ; The temperature of the Sn-Zn alloy electroplating solution is 15-30°C. After the plated parts are electroplated by the above-mentioned Sn-Zn alloy electroplating solution, a fine crystal and good decorative brig...

Embodiment 2

[0036] A kind of Sn-Zn alloy electroplating solution, its material and composition are as follows:

[0037] SnSO 4 30g / L

[0038] ZnSO 4 55g / L

[0039] h 2 SO 4 145g / L

[0040] Citric acid 55mL / L

[0041] Antimony Potassium Tartrate 1.2g / L

[0042] Benzylidene acetone 28g / L

[0043] Non-ionic surfactant 250g / L

[0044] Nonylphenol polyoxyethylene ether 50g / L

[0045] Benzoic acid 89g / L

[0046] Sodium methylene dinaphthalene sulfonate 48g / L

[0047] Niacin 14 g / L

[0048] Configure according to the above ratio and stir evenly; the required anode is tin with 99.9% purity during the electroplating of the Sn-Zn alloy electroplating solution; the current density of the Sn-Zn alloy electroplating solution is 2~4A / dm 2 ; The temperature of the Sn-Zn alloy electroplating solution is 15-30°C. After the plated parts are electroplated by the above-mentioned Sn-Zn alloy electroplating solution, a fine crystal and good decorative b...

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Abstract

The invention discloses a Sn-Zn alloy electroplating solution, which comprises the following materials of: 25-30g / L of SnSO4, 40-55g / L of ZnSO4, 130-150g / L of H2SO4, 40-55mL / L of citric acid, 0.8-1.2g / L of antimony potassium tartrate, 18-30g / L of benzylidene acetone, 150-250g / L of nonionic surfactant, 30-50g / L of nonylphenol polyoxyethylene ether, 60-90g / L of phenylformic acid, 25-50g / L of disodium methylene dinaphthalenesulfonate and 10-15g / L of nicotinic acid. The Sn-Zn alloy electroplating solution provided by the invention can completely replace Ag electroplating solution; an electroplated part is subjected to electroplating treatment of the Sn-Zn alloy electroplating solution to obtain a bright coating with fine crystal and favorable decorativeness; and the electroplating cost of a Ag metal electroplating solution is reduced.

Description

technical field [0001] The invention belongs to the field of electroplating solutions, in particular to a Sn-Zn alloy electroplating solution. Background technique [0002] The silver electroplating solution has good stability, good uniformity and depth capability, fine crystallization of the coating, and bright silver-white appearance, which can meet the application of decorative electroplating and functional electroplating in many fields. However, most of the traditional silver plating solutions use silver cyanide as the source of silver in the silver plating solution. Cyanide is highly toxic and extremely harmful to the human body and the environment. Good exhaust equipment and wastewater treatment conditions are required during production. [0003] At present, cyanide-free silver plating solutions have also appeared in the market, which solves the danger brought by the highly toxic cyanide, but still need to use precious metal silver, resulting in a significant increase ...

Claims

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Application Information

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IPC IPC(8): C25D3/56C25D3/60
Inventor 蒋惠良
Owner 张家港舒马克电梯安装维修服务有限公司镀锌分公司
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