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A kind of potassium chloride cadmium cobalt alloy plating solution, its preparation method and electroplating process

An electroplating process and potassium chloride technology, applied in the field of electroplating and potassium chloride cadmium cobalt alloy electroplating, can solve the problem that the anti-corrosion technology of the coating cannot meet the technical requirements, etc. The effect of bit ability

Active Publication Date: 2020-07-24
GUANGZHOU ULTRA UNION CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, the present invention provides a potassium chloride cadmium cobalt alloy plating solution, its preparation method and electroplating process, to solve the difficulty that the current coating anti-corrosion technology cannot meet the technical requirements of modern manufacturing industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The potassium chloride cadmium cobalt alloy bath composition and concentration of the present embodiment are as follows:

[0042] Cadmium chloride 30g / L, cobalt chloride 10g / L, potassium chloride 150g / L, complexing agent 130g / L, brightener 2mL / L, auxiliary agent 30mL / L, and displacement 10mL / L.

[0043] The concentration of water-soluble polyurethane contained in the positioning agent is 20-60ml / L, and the mass concentration of 80-120 ml / L of polyoxyethylene ether phosphate ester of PE 600 is 50-60ml / L. 80g / L. Add 20-60ml of water-soluble polyurethane, 80-120ml of polyoxyethylene ether phosphate of product type PE 600, and 50-80g of sodium dimethylbenzenesulfonate into 500mL of water, stir well, and then add water to 1000mL.

[0044] The complexing agent is composed of three components A, B and C, wherein component A is nitrilotriacetic acid, component B is composed of any one or two of citric acid, tartaric acid, gluconic acid and malic acid, Component C is composed ...

Embodiment 2

[0076] The barrel plating potassium chloride cadmium cobalt alloy bath composition and concentration of the present embodiment are as follows:

[0077] Cadmium chloride 25g / L, cobalt chloride 5g / L, potassium chloride 180g / L, complexing agent 120g / L, brightener 2mL / L, auxiliary agent 30mL / L, dislocation agent 5ml / L;

[0078] Described coordinating agent, brightening agent, auxiliary agent, moving agent are as embodiment 1.

[0079] Described potassium chloride cadmium cobalt alloy plating solution is prepared by following method:

[0080] (1) Add 4 / 5 volume of water to the plating tank, sequentially add sodium hydroxide, potassium chloride, sodium hydroxide and complexing agent in a mass ratio of 1:2, and stir to dissolve the above substances;

[0081] (2) Then add cadmium chloride and cobalt chloride, and stir until dissolving, filter plating solution;

[0082] (3) At 0.08A / dm 2 Electrolyze for 1 to 8 hours at a certain cathode current density;

[0083] (4) Add brightener,...

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Abstract

The invention discloses a potassium-chloride-cobalt alloy plating solution and a preparation method and an electroplating process thereof. The plating solution comprises, by weight, 20-40 g / L of cadmium chloride, 2-15g / L cobalt chloride, 90-160g / L of a coordination agent, 120-180g / L of potassium chloride, l-3mL / L of a brightener, 20-40mL / L of an auxiliary agent and 5-15 ml / L of a walking agent, wherein the electroplating operation conditions are as follows: the pH value of the plating solution is 6.5-7.5, the temperature of a plating tank is 20-35 DEG C, and the current density of the cathodeis 0.5-2A / dm<2>, the ratio of the cathode to the anode area is 2: (1-3). The plating solution is stable and convenient to maintain, and a cadmium-cobalt alloy coating has excellent corrosion resistance and has a good market prospect.

Description

technical field [0001] The invention relates to the field of electroplating, in particular to the technical field of potassium chloride cadmium cobalt alloy electroplating. Background technique [0002] With the rise of my country's aerospace and navigation industries, the existing metal coating protection technology can no longer meet the growing technical needs of my country's national defense construction. The importance of research and development of new electroplating technology and high corrosion resistance coating has become increasingly prominent. [0003] In the prior art, a cadmium-plating process is generally used to prepare high corrosion-resistant protective layers for aerospace and marine parts, and a cadmium-plated titanium alloy process is used to prepare high-resistant protective layers for high-strength structural steels. The cadmium-cobalt alloy coating has not yet been actually developed and applied. [0004] Production practice shows that the corrosion ...

Claims

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Application Information

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IPC IPC(8): C25D3/56C25D5/36
CPCC25D3/56C25D5/36
Inventor 郭崇武黎小阳陈康赖奂汶
Owner GUANGZHOU ULTRA UNION CHEM LTD
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