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Nickel phosphorus ally electroplating liquid and electroplating process thereof

A nickel-phosphorus alloy and electroplating process technology, applied in the field of nickel-phosphorus alloy electroplating solution and its electroplating process, can solve the problems of inability to use high corrosion resistance, poor stability of the electroplating solution, and difficulty in large-scale promotion, etc. High stability and good coating stability

Inactive Publication Date: 2019-06-18
东莞市合航精密科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although Hastelloy and duplex stainless steel have good corrosion resistance to chloride ions, they are extremely expensive and difficult to promote on a large scale. Generally, stainless steel often has little effect in solving this problem.
[0005] Nickel-phosphorus alloy coating is one of the better ways to solve this problem. It has the characteristics of anti-reductive corrosion medium. Common nickel-phosphorus alloy plating methods include electroless plating and constant current electroplating. Electroless plating is due to the Poor stability, short service life, slow deposition rate and other shortcomings cannot be used for equipment with high corrosion resistance requirements

Method used

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  • Nickel phosphorus ally electroplating liquid and electroplating process thereof
  • Nickel phosphorus ally electroplating liquid and electroplating process thereof
  • Nickel phosphorus ally electroplating liquid and electroplating process thereof

Examples

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Effect test

Embodiment 1

[0032] A nickel-phosphorus alloy electroplating solution is composed of the following raw materials,

[0033]

[0034] The starter agent A is the nickel-phosphorus starter agent A, and the starter agent B is the nickel-phosphorus starter agent B, which ensures the stability of the nickel-phosphorus content and provides the stability of the present invention.

[0035] Also include supplement, the phosphorus content of supplement is 25g / L, in order to adjust the phosphorus composition in the bath, when lacking, the phosphorus in the coating will drop, affect the stability of the coating, further provide the stability of the present invention .

[0036] The pH value of the plating solution is 2.2-2.7 to ensure the stability of the pH of the plating solution. If the pH is too low, the current efficiency of the plating solution will decrease and the phosphorus content in the coating will increase. If the pH is too high, the current efficiency of the plating solution will decreas...

Embodiment 2

[0042] A nickel-phosphorus alloy electroplating solution is composed of the following raw materials,

[0043]

[0044]

[0045] The starter agent A is the nickel-phosphorus starter agent A, and the starter agent B is the nickel-phosphorus starter agent B, which ensures the stability of the nickel-phosphorus content and provides the stability of the present invention.

[0046] Also include supplement, the phosphorus content of supplement is 30g / L, in order to adjust the phosphorus composition in the bath, when lacking, the phosphorus in the coating will drop, affect the stability of the coating, further provide the stability of the present invention .

[0047] The pH value of the plating solution is 2.2-2.7 to ensure the stability of the pH of the plating solution. If the pH is too low, the current efficiency of the plating solution will decrease and the phosphorus content in the coating will increase. If the pH is too high, the current efficiency of the plating solution ...

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Abstract

The invention relates to the field of electroplating, in particular to nickel phosphorus ally electroplating liquid. The nickel phosphorus ally electroplating liquid comprises the following raw materials: 380-475 g / L of nickel sulfate, 400 ml / L of cylinder opening agent A, 100 ml / L of cylinder opening agent B, 10 ml / L of brightening agent, and the balance of de-ionized water. A nickel phosphorus ally electroplating process comprises the steps of bath building, deoiling, acid activation, liquid plating, dehydration and drying; the overall process is stable in operation and high in plated layerstability; the nickel phosphorus ally electroplating liquid contains no chlorine to improve the pH value stability; the hardness of formed plated layers is 550-600 HV 0.05; the wear resisting index is2 mg / 1000 t; the wear resistance is excellent; the brightening agents are used for improving the deep plating capacity and the brightening capacity of the plating liquid; and when shorted, holes anddumb plated layers are generated in low levels, so that the service life is further prolonged.

Description

technical field [0001] The invention relates to the field of electroplating, in particular to a nickel-phosphorus alloy electroplating solution and an electroplating process thereof. Background technique [0002] In the chemical industry, due to production requirements, chemical equipment will inevitably have corrosion problems. In addition to economic losses such as replacement of equipment, equipment shutdown, and product loss, the more serious is due to equipment damage. , Explosions that endanger personal safety, and environmental pollution and resource waste caused by leakage of raw materials and products. [0003] The equipment anti-corrosion technologies currently referred to include reasonable material selection, surface protection (including metal plating and non-gold coating), and environmental medium treatment. Electrochemical protection and anti-corrosion treatment design, etc. [0004] Through these methods, the corrosion problem in chemical equipment has been...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56
Inventor 周海湖
Owner 东莞市合航精密科技有限公司
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