Tin cobalt alloy electroplating liquid with good deep plating capacity and electroplating method thereof

A tin-cobalt alloy and electroplating solution technology, which is applied in the field of electroplating, can solve problems such as poor deep plating ability, internal coating of long tube workpieces cannot meet the requirements, quality problems, etc., and achieve the effect of improving deep plating ability

Active Publication Date: 2019-06-14
昂七化工科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this electroplating solution can completely replace the decorative chrome plating process in appearance and is suitable for workpieces with complex shapes, its deep plating ability is not good. In actual electroplating applications, this electroplating solution is not suitable for long tubes with simple shapes. , so that the internal coating of the long tube workpiece cannot meet the requirements, causing serious quality problems and hidden dangers of corrosion on the inner wall of the long tube

Method used

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  • Tin cobalt alloy electroplating liquid with good deep plating capacity and electroplating method thereof

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Experimental program
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Effect test

Embodiment 1

[0022] A tin-cobalt alloy electroplating solution with good deep-plating ability, its plating solution formula consists of:

[0023] Stannous chloride 40g / L

[0024] Cobalt chloride 40g / L

[0025] Potassium chloride 60g / L

[0026] EDTA disodium salt 12g / L

[0027] Sodium Potassium Tartrate 5g / L

[0028] Diphenylsulfonylimide 0.1g / L

[0029] Thiophene-2-sulfonic acid 0.3g / L

[0030] Coumarin 0.2g / L

[0031] N,N-Diethylaminopropargylamine 0.02g / L

[0032] The electroplating method of the tin-cobalt alloy electroplating solution: stainless steel is put into the electroplating solution as an anode, the workpiece is cleaned and activated according to the conventional plating pretreatment, and then electroplated with bright nickel, and the above-mentioned workpiece electroplated with bright nickel is put into the electroplating method of the present invention. The liquid is used as the cathode, and the current density is controlled to be 0.3-1.0 A / dm 2 , Plating bath tempera...

Embodiment 2

[0034] A tin-cobalt alloy electroplating solution with good deep-plating ability, its plating solution formula consists of:

[0035] Stannous chloride 50g / L

[0036] Cobalt chloride 30g / L

[0037] Potassium chloride 90g / L

[0038] EDTA disodium salt 10g / L

[0039] Sodium Potassium Tartrate 10 g / L

[0040] Diphenylsulfonylimide 0.05g / L

[0041] Thiophene-2-sulfonic acid 0.5g / L

[0042] Coumarin 0.1g / L

[0043] N,N-Diethylaminopropargylamine 0.05 g / L

[0044] The electroplating method of described tin-cobalt alloy electroplating solution is the same as embodiment 1.

Embodiment 3

[0046] A tin-cobalt alloy electroplating solution with good deep-plating ability, its plating solution formula consists of:

[0047] Stannous chloride 45g / L

[0048] Cobalt chloride 35g / L

[0049] Potassium chloride 70g / L

[0050] EDTA disodium salt 11g / L

[0051] Sodium Potassium Tartrate 6 g / L

[0052] Diphenylsulfonylimide 0.08g / L

[0053] Thiophene-2-sulfonic acid 0.4g / L

[0054] Coumarin 0.15g / L

[0055] N,N-Diethylaminopropargylamine 0.03g / L

[0056] The electroplating method of described tin-cobalt alloy electroplating solution is the same as embodiment 1.

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Abstract

The invention discloses a tin cobalt alloy electroplating liquid with good deep plating capacity and an electroplating method thereof. The tin cobalt alloy electroplating liquid with the good deep plating capacity is prepared from the components: 40-50g/L of stannous chloride, 30-40g/L of cobalt chloride, 60-90g/L of potassium chloride, 10-12g/L of EDTA disodium salt, 5-10g/L of seignette salt, 0.05-0.1g/L of dibenzenesulfonimide, 0.3-0.5g/L of thiophene-2-sulfoacid, 0.1-0.2g/L of coumarin and 0.02-0.05g/L of N,N-diethylamine propargylamine. According to the tin cobalt alloy electroplating liquid with the good deep plating capacity and the electroplating method thereof, a primary brightening agent adopted in the electroplating liquid is a composition of the dibenzenesulfonimide and the thiophene-2-sulfoacid, and a secondary brightening agent is a composition of the coumarin and the N,N-diethylamine propargylamine. The four substances are used as the brightening agents of the electroplating liquid, meanwhile, play the synergistic effect on the aspect of improving the deep plating capacity, and none is dispensable. The deep plating capacity of the electroplating liquid is greatly improved, and the tin cobalt alloy electroplating liquid with the good deep plating capacity is very suitable for plating of workpieces with long pipe shapes.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a tin-cobalt alloy electroplating solution with good deep plating ability and an electroplating method thereof. Background technique [0002] The electroplated chromium layer has good corrosion resistance, wear resistance and reflective properties, and is widely used. However, toxic hexavalent chromium is often used in chrome plating, which is very polluting to the environment. Therefore, in many occasions, tin-cobalt alloys are often used as substitutes. Chrome plating. At the same time, the tin-cobalt alloy coating is favored by people for its noble and elegant color, and is widely used in jewelry, watches, glasses, buttons and other industries. [0003] At present, the prior art has disclosed some technical solutions of tin-cobalt alloy electroplating solutions. For example, the Chinese patent application with publication number CN103014792 A discloses a tin-cobalt all...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/60C25D7/04
Inventor 范成勇
Owner 昂七化工科技(上海)有限公司
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