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Electroplating method for nickel phosphorus alloy based on betaine-urea-water deep eutectic solvent

A low eutectic solvent and betaine technology, applied in the field of electroplating, can solve problems such as combustion and explosion, and achieve the effects of good corrosion resistance, safe and non-toxic process

Active Publication Date: 2017-01-04
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, ethylene glycol has a certain degree of toxicity, and there is a danger of burning and explosion when exposed to open flames, high heat or contact with oxidants.

Method used

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  • Electroplating method for nickel phosphorus alloy based on betaine-urea-water deep eutectic solvent
  • Electroplating method for nickel phosphorus alloy based on betaine-urea-water deep eutectic solvent
  • Electroplating method for nickel phosphorus alloy based on betaine-urea-water deep eutectic solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First weigh 0.2 mol of betaine, 0.4 mol of urea, and 0.6 mol of distilled water and place them in a beaker, seal the beaker with plastic wrap, and then stir at a constant temperature of 80°C to obtain a transparent deep eutectic solvent. Then weigh nickel chloride hexahydrate and sodium hypophosphite according to 0.3 mole per liter and 0.05 mole per liter respectively, join in the above-mentioned deep eutectic solvent, and stir at 80 ℃ of constant temperature to obtain the deep eutectic solvent containing nickel phosphorus, thereby As an electroplating solution for electroplating nickel-phosphorus alloys.

[0028] The pure nickel plate is used as the anode, and the brass is used as the cathode, immersed in a nickel-containing eutectic solvent heated to 70°C in a water bath for 30 minutes of constant current electroplating, wherein the direct distance between the cathode and the anode is 1cm, and the current density is 2mA / cm 2 .

[0029] After the electroplating is com...

Embodiment 2

[0031] First weigh 0.2 mol of betaine, 0.4 mol of urea, and 0.6 mol of distilled water and place them in a beaker, seal the beaker with plastic wrap, and then stir at a constant temperature of 80°C to obtain a transparent deep eutectic solvent. Then weigh nickel chloride hexahydrate and sodium hypophosphite according to 0.3 mole per liter and 0.05 mole per liter respectively, join in the above-mentioned deep eutectic solvent, and stir at 80 ℃ of constant temperature to obtain the deep eutectic solvent containing nickel phosphorus, thereby As an electroplating solution for electroplating nickel-phosphorus alloys.

[0032] The pure nickel plate is used as the anode, and the brass is used as the cathode, immersed in a nickel-containing eutectic solvent heated to 60°C in a water bath for 30 minutes of constant current electroplating, wherein the direct distance between the cathode and the anode is 2cm, and the current density is 2mA / cm 2 ;

[0033] After the electroplating is com...

Embodiment 3

[0035] First weigh 0.2 mol of betaine, 0.4 mol of urea, and 0.6 mol of distilled water and place them in a beaker, seal the beaker with plastic wrap, and then stir at a constant temperature of 80°C to obtain a transparent deep eutectic solvent. Then weigh nickel chloride hexahydrate and sodium hypophosphite according to 0.3 mole per liter and 0.05 mole per liter respectively, join in the above-mentioned deep eutectic solvent, and stir at 80 ℃ of constant temperature to obtain the deep eutectic solvent containing nickel phosphorus, thereby As an electroplating solution for electroplating nickel-phosphorus alloys.

[0036] The pure nickel plate is used as the anode, and the brass is used as the cathode, immersed in a nickel-containing eutectic solvent heated to 60°C in a water bath for 10 minutes of constant current electroplating, wherein the direct distance between the cathode and the anode is 2cm, and the current density is 3mA / cm 2 ;

[0037] After the electroplating is com...

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Abstract

The invention provides an electroplating method for nickel phosphorus alloy based on a betaine-urea-water deep eutectic solvent and belongs to the technical field of electroplating. The electroplating method comprises the following steps that betaine, urea and distilled water are subjected to isothermal stirring to obtain a transparent deep eutectic solvent; then nickel chloride hexahydrate and sodium hypophosphite are added into the deep eutectic solvent to be subjected to isothermal stirring to obtain a deep eutectic solvent with nickel phosphorus, and the deep eutectic solvent with nickel phosphorus serves as an electroplating solution; and a pure nickel plate serves as an anode, brass serves as a cathode, and the pure nickel plate and the brass are immersed into the electroplating solution to be subjected to electroplating at constant current. Tlectroplating technology for the nickel phosphorus alloy is safe, non-poisonous and environmentally friendly; environmental problems existing in watt nickel and borofluoride nickel plating and other technologies are soloved.

Description

technical field [0001] The invention belongs to the technical field of electroplating, and in particular relates to a method for electroplating a nickel-phosphorus alloy based on a deep eutectic solvent. Background technique [0002] Nickel electroplating uses the reduction of nickel ions in the plating solution on the cathode to obtain a metallic nickel coating, which belongs to a cathodic electroplating process. Traditional nickel plating methods include sulfate type, chloride type, sulfamate type, citrate type, fluoroborate type, etc. Among them, the sulfate type (watt) nickel plating solution is most commonly used in industry. Watt nickel plating is one of the earliest nickel plating processes, and its main components are nickel sulfate, chloride acid and boric acid. There are boron ions and fluorine ions polluting the environment in the fluoroborate nickel plating solution. It has certain pollution to the environment. The patent application number is 201310420602.8,...

Claims

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Application Information

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IPC IPC(8): C25D3/56
CPCC25D3/562
Inventor 包全合刘立红尹孝辉赵丽晴
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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