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Tin-cobalt alloy decorative chromium-substituted electroplate liquid and electroplate method thereof

A tin-cobalt alloy and decorative technology, which is applied in the tin-cobalt alloy decorative chromium-substituting electroplating solution and its electroplating field, can solve problems such as narrow range, and achieve the effects of long service life, bright appearance and good adhesion

Active Publication Date: 2013-04-03
合肥华清高科表面技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tin-cobalt alloy obtained in the prior art can only obtain the blue-silver-white appearance close to decorative chromium on small workpieces, especially small workpieces in the barrel plating process. Therefore, the existing tin-cobalt alloy electroplating technology can replace traditional decorative chromium in a relatively narrow range. , can not completely replace the decorative chrome plating process

Method used

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  • Tin-cobalt alloy decorative chromium-substituted electroplate liquid and electroplate method thereof
  • Tin-cobalt alloy decorative chromium-substituted electroplate liquid and electroplate method thereof
  • Tin-cobalt alloy decorative chromium-substituted electroplate liquid and electroplate method thereof

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Effect test

Embodiment 1

[0019] A tin-cobalt alloy decorative chromium-substituting electroplating solution, its plating solution formula consists of:

[0020]

[0021]

[0022] The electroplating method of the tin-cobalt alloy decorative chromium-substituting electroplating solution: stainless steel is put into the electroplating solution as an anode, the workpiece is cleaned and activated according to the conventional pre-plating treatment, and then electroplated with bright nickel, and the above-mentioned workpiece electroplated with bright nickel is placed Into the electroplating solution of the present invention as the cathode, at a temperature of 50-60°C, a pH value of 8.0-9.0, and a cathode current density of 0.3-1.0A / dm 2 electroplating under conditions.

Embodiment 2

[0024] A tin-cobalt alloy decorative chromium-substituting electroplating solution, its plating solution formula consists of:

[0025]

[0026] The electroplating method of the tin-cobalt alloy decorative chromium-substituting electroplating solution: stainless steel is put into the electroplating solution as an anode, the workpiece is cleaned and activated according to the conventional pre-plating treatment, and then electroplated with bright nickel, and the above-mentioned workpiece electroplated with bright nickel is placed Into the electroplating solution of the present invention as the cathode, at a temperature of 50-60°C, a pH value of 8.0-9.0, and a cathode current density of 0.3-1.0A / dm 2 electroplating under conditions.

Embodiment 3

[0028] A tin-cobalt alloy decorative chromium-substituting electroplating solution, its plating solution formula consists of:

[0029]

[0030]

[0031] The electroplating method of the tin-cobalt alloy decorative chromium-substituting electroplating solution: stainless steel is put into the electroplating solution as an anode, the workpiece is cleaned and activated according to the conventional pre-plating treatment, and then electroplated with bright nickel, and the above-mentioned workpiece electroplated with bright nickel is placed Into the electroplating solution of the present invention as the cathode, at a temperature of 50-60°C, a pH value of 8.0-9.0, and a cathode current density of 0.3-1.0A / dm 2 electroplating under conditions.

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Abstract

The invention discloses a tin-cobalt alloy decorative chromium-substituted electroplate liquid and an electroplate method thereof. The electroplate liquid consists of the following components: 40-50 g / L of stannous chloride, 30-40 g / L of cobalt chloride, 60-90 g / L of potassium chloride, 10-12 g / L of EDTA disodium salt, 5-10 g / L of sodium potassium tartrate tetrahydrate, 0.2-0.5 g / L of crylic-2-ethyl hexyl ester, 0.1-0.2 g / L of benzalacetone, 0.1-0.2 g / L of polyoxypropylene glycerol ether and 0.02-0.05 g / L of coumarin. Compared with the electroplated coating obtained by the present tin-cobalt alloy electroplate liquid, the coating obtained according to the invention is closer to a chromium coating in apperance, can be widely applied to decorative chromium-substituted technique, and has the advantages of smoothness of the electroplated coating, uniformity and compactness, good adhesive force, long service life of the electroplate liquid and the like.

Description

technical field [0001] The invention relates to a tin-cobalt alloy electroplating solution and an electroplating method thereof, in particular to a tin-cobalt alloy decorative chromium-substituting electroplating solution and an electroplating method thereof. Background technique [0002] So far, there is no metal or alloy coating that can completely replace the hexavalent chromium coating in terms of appearance and performance. Now it is only possible to choose a suitable metal or alloy coating to replace it according to the special requirements of use. Among the chromium-substituting coatings that have been reported, they can be divided into alloy plating, metal and non-metal composite layers, inorganic chromium-substituting layers and organic chromium-substituting layers in terms of the properties of the covering layer. Proceeding from the actual situation of the electroplating industry, the chromium-substituting coatings can be divided into two categories: one is the coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56C25D3/60
Inventor 郑松林刘万青饶丹
Owner 合肥华清高科表面技术股份有限公司
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