Electroplating method of zinc-nickel alloy nano multilayer film

A technology of electroplating solution and electroplating tank, which is applied in the field of surface treatment of steel parts and metal materials, can solve the problems of harmful multi-layer films, and achieve the effects of high compactness, convenient operation and high comprehensive performance

Inactive Publication Date: 2009-10-07
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005]Because the deposition of zinc-nickel alloy belongs to abnormal co-deposition, the traditional view is that when the nickel content in the zinc-nickel alloy coating reaches 13%, the coating has the best corrosion resistance , so the main problem solved by conventional zinc-nickel alloy additives is to try to control the nickel content in the coating to around 13% in the abnormally co-deposited zinc-nickel alloy electrolyte. is harmful

Method used

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  • Electroplating method of zinc-nickel alloy nano multilayer film

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Experimental program
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Effect test

Embodiment 1

[0018] Embodiment 1: the steel plate that surface is coated with zinc-nickel alloy nano multilayer film, its coating is zinc nickel alloy nano multilayer film, the nickel content of low nickel layer is 14.07%, the nickel content of high nickel layer is 14.07% by weight in the coating The content is 77.35%, and the thickness of the coating is (8~9)×10 -3 mm.

[0019] The specific steps are: before the steel plate is electroplated, the parts are polished and washed with water, degreased, then washed with water, rust removed, put into the electroplating bath after washing, and the electrolyte is stirred or left standing, After electrolysis, the parts are taken out from the electrolytic solution, washed with water, and dried. The pH value of the plating solution is 3.5, the power supply mode of plating is pulse output power supply, the temperature is room temperature, and the time is 25 minutes.

[0020] The electrolyte solution contains Ni and Zn salts as the main salt, and NH ...

Embodiment 2

[0021] Embodiment 2: the nut that the surface is coated with zinc-nickel alloy nano-multilayer film, its coating is zinc-nickel alloy nano-multilayer film, the nickel content of low nickel layer is 14.20% by weight in the coating, the nickel of high nickel layer The content is 76.8%, and the thickness of the coating is 7.5×10 -3 mm.

[0022] The surface electroplating method of the nut comprises that the nut is polished and washed with water and degreased before the electroplating, then washed with water, derusted, put into the electroplating solution of the electroplating tank after being washed with water, and the electrolytic solution is stirred Or let it stand still, and after electrolysis, take out the parts from the electrolyte, wash them with water, and dry them. The pH value of the plating solution is 3.5, the power supply mode of plating is pulse output power supply, the temperature is room temperature, and the time is 20 minutes.

[0023] The electrolyte solution c...

Embodiment 3

[0024] Embodiment 3: the pump chamber liner that surface is coated with zinc-nickel alloy nano-multilayer film, its coating is zinc-nickel alloy nano-multilayer film, the nickel content of low nickel layer is 13.9% by weight in the coating, high nickel layer The nickel content is 77.5%, and the thickness of the coating is 8.5×10 -3 mm.

[0025] The surface electroplating method of the pump chamber lining comprises: before the pump chamber lining is electroplated, the parts are polished and washed with water, degreased, then washed with water, rust removed, put into the electroplating tank electroplating solution after being washed with water, and The electrolytic solution is stirred or left to stand, and after electrolysis, parts are taken out of the electrolytic solution, washed with water, and dried. The pH value of the plating solution is 3.5, the power supply mode of plating is pulse output power supply, the temperature is room temperature, and the time is 30 minutes.

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Abstract

The present invention discloses a method of plating a plating layer of zinc-nickel alloy nano multilayer film on surface of steel components, belongs to surface treatment technique of steel components and metallic materials field. The electroplating is using Ni and Zn as main salt, controlling content of Ni salt and Zn salt and pH value and current density to obtain plating layer of zinc-nickel alloy nano multilayer film. The invention has advantages of no post-processing after plating, low cost, high-efficiency and high-speed, convenient operation, simple process, safety, plating layer rigidity, corrosion resistance, wearing resistance, high-temperature resistance, compactness, decorative and excellent combination property.

Description

technical field [0001] The invention relates to a method for plating a zinc-nickel alloy nano-multilayer film on the surface of iron and steel parts, and belongs to the technical field of surface treatment of iron and steel parts and metal materials. Background technique [0002] Corrosion and anti-corrosion are related to economic development and people's life safety. Surface engineering technology is the most economical and effective means and method to solve the corrosion and protection of mechanical parts and materials. With the rapid development of modern industry and science and technology, the performance requirements for mechanical parts and material surfaces are getting higher and higher, and surface treatment technology has also developed rapidly. Surface engineering technology can use chemical, physical or electrochemical methods to treat the surface of parts or materials to form various protective layers on the surface and improve the service life of parts or mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/10C25D5/18C25D3/56
Inventor 张英杰闫宇星董鹏宋凡子章江洪
Owner KUNMING UNIV OF SCI & TECH
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