Electroplating solution and process for electroplating white copper tin by alkaline solution
An alkaline solution and tin electroplating technology, applied in the field of electroplating, can solve the problems of inability to thicken and corrode the coating, and achieve the effect of easy maintenance and simple components
Active Publication Date: 2013-03-06
广东致卓环保科技有限公司
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Problems solved by technology
Another copper-tin alloy electroplating solution is a strong acid solution, the composition of the plating solution is simple and stable, and the operation is easy to master. The disadvantage is that the pH is low, and it is easy to cause corrosion to amphoteric metals such as zinc alloys, aluminum alloys, and glass ceramic electronic components. ; and the coating cannot be thickened
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example 1
[0025] potassium pyrophosphate 350g / L copper sulfate 20g / L stannous chloride 40g / L Dipotassium phosphate 60g / L β-naphthol 0.5 g / L additive 1.8 mL / L
example 2
[0027] potassium pyrophosphate 400g / L copper pyrophosphate 15g / L stannous sulfate 35g / L Dipotassium phosphate 40g / L Quinol 0.5 g / L additive 2 mL / L
example 3
[0029] potassium pyrophosphate 300g / L copper sulfate 10g / L Stannous methanesulfonate 35g / L Dipotassium phosphate 20g / L citric acid 0.2 g / L additive 3.0ml / L
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The invention discloses electroplating solution and a process for electroplating white copper tin by alkaline solution. The electroplating solution is characterized by comprising pyrophosphate, soluble copper salt, soluble tin salt, phosphoric acid, a stannous ion stabilizer, conducting salt and a right amount of additive, wherein the pyrophosphate is used as a complexing agent; the soluble copper salt and the soluble tin salt are used as main salt; and the phosphoric acid is used as an electroplating solution pH regulator. The electroplating solution disclosed by the invention is simple in composition, is convenient to maintain and has a wide current density range; the alkaline condition of the electroplating solution can be used for electroplating active metals and base materials easy to corrode.
Description
technical field [0001] The invention relates to the technical field of electroplating, in particular to an alkaline solution electroplating copper-nickel-tin electroplating solution and a process. Background technique [0002] Traditionally, electroplated nickel has been widely used as a surface treatment for decoration and clothing. However, studies have found that nickel can cause nickel allergy, which requires another alternative nickel coating to appear. Therefore copper-tin alloy electroplating was proposed. Most of the electroplating solutions for traditional industrial copper-tin alloy electroplating contain cyanide. Due to the harm of cyanide to the human body and the difficulty of wastewater treatment, copper-tin alloy electroplating solutions that do not contain cyanide ions are required. Another copper-tin alloy electroplating solution is a strong acid solution, the composition of the plating solution is simple and stable, and the operation is easy to master. Th...
Claims
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IPC IPC(8): C25D3/60
Inventor 谢金平李树泉赵洋范小玲曾震欧
Owner 广东致卓环保科技有限公司