Zero emission type chemical nickel plating liquid

An electroless nickel plating solution and discharge type technology, applied in liquid electroless plating, metal material coating process, coating and other directions, can solve the problem of no low-cost treatment method, etc., and achieve considerable economic benefits, fast deposition rate, and durability. good corrosion performance

Active Publication Date: 2014-11-05
HUNAN INSTITUTE OF ENGINEERING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is currently no low-c

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  • Zero emission type chemical nickel plating liquid

Examples

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Example Embodiment

[0020] Example 1: The electroless nickel plating solution contains the following components: nickel hypophosphite 0.1 mol / L, hypophosphorous acid 0.05 mol / L, citric acid 6 g / L, acetic acid 15 g / L, and maleic acid 1.5 g / L, copper acetate 1g / L, the rest is deionized water. After the electroless nickel plating solution is prepared according to the above components and contents, it is used for the electroless nickel plating of the pre-treated carbon steel test piece. The electroless nickel plating process is: controlling the temperature of the plating solution at 85°C, the pH value of the plating solution is 4.8, and plating for 30 minutes. After the electroless nickel plating is completed, test the plating speed and corrosion resistance of the plating layer, the stability and life of the plating solution, and record the test results in Table 1.

Example Embodiment

[0021] Example 2: The electroless nickel plating solution contains the following components: nickel hypophosphite 0.15mol / L, hypophosphorous acid 0.05mol / L, citric acid 10g / L, acetic acid 20g / L, and maleic acid 1.5g / L, copper acetate 1g / L, glutaric acid 1g / L, the rest is deionized water. After the electroless nickel plating solution is prepared according to the above components and contents, it is used for the electroless nickel plating of the pre-treated carbon steel test piece. The electroless nickel plating process is: controlling the temperature of the plating solution at 85°C, the pH value of the plating solution is 4.8, and plating for 30 minutes. After the electroless nickel plating is completed, test the plating speed and corrosion resistance of the plating layer, the stability and life of the plating solution, and record the test results in Table 1.

Example Embodiment

[0022] Example 3: The electroless nickel plating solution contains the following components: nickel hypophosphite 0.2mol / L, hypophosphorous acid 0.05mol / L, citric acid 20g / L, acetic acid 20g / L, and maleic acid 2g / L L, copper acetate 3g / L, glutaric acid 2g / L, the rest is deionized water. After the electroless nickel plating solution is prepared according to the above components and contents, it is used for the electroless nickel plating of the pre-treated carbon steel test piece. The electroless nickel plating process is: controlling the temperature of the plating solution at 85°C, the pH value of the plating solution is 4.8, and plating for 30 minutes. After the electroless nickel plating is completed, test the plating speed and corrosion resistance of the plating layer, the stability and life of the plating solution, and record the test results in Table 1.

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Abstract

The invention discloses a zero emission type chemical nickel plating liquid. In the nickel plating liquid, a used main salt and reducing agent is nickel hypophosphite, an auxiliary reducing agent is hypophosphorous acid, and other complexing agent, stabilizer, buffering agent, accelerator, brightening agent and other ingredients are all organic acids or lithium salts thereof or metal organic salts containing cations for doping lithium iron phosphate. All the raw materials do not contain nitrogen or sulfur elements, and do not pollute the environment in a plating process; the deposition rate of an obtained plated layer is large, the corrosion resistance is excellent, the plating liquid is good in stability, and the service life is long; and a waste liquid can be directly used for preparing multielement doped lithium iron phosphate/carbon composite positive electrode materials, no waste is generated, and clean production requirements are met. The plating liquid provided by the invention has quite broad application prospects.

Description

technical field [0001] The invention belongs to the field of chemistry and chemical engineering, and in particular relates to a zero-emission chemical nickel plating solution. Background technique [0002] Electroless nickel plating is a surface treatment technology that has developed rapidly in recent years. It is widely used in machinery, chemical industry, etc. , mining, medical and many other industries. Especially in recent years, the successful application of electroless nickel plating on computer hard disks has enabled this technology to have a broader market in the electronics and information industries. With the continuous expansion of the application range and production scale of electroless nickel plating technology, the resulting environmental problems are becoming more and more serious. Traditional electroless nickel plating generally uses nickel sulfate as the main salt, sodium hypophosphite as the reducing agent, and various organic and inorganic salt additi...

Claims

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Application Information

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IPC IPC(8): C23C18/36
Inventor 刘万民唐常青黄先威
Owner HUNAN INSTITUTE OF ENGINEERING
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