Deposition method for abrasion-resisting electric conduction nickel plating layer on surface of magnesium-lithium alloy

A technology of magnesium-lithium alloy and deposition method, which is applied in coatings, electrolytic coatings, etc., can solve the problems of high-quality surface modification such as difficulty, and achieve the effects of shortening the distance between particles, increasing the surface area, and high wear resistance

Inactive Publication Date: 2016-07-27
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of high-quality surface modification difficulty in the deposition process of the wear-resistant conductive nickel-plated layer on the surface of magnesium-lithium alloy, the invention provides a deposition method for wear-resistant conductive nickel-plated layer on the surface of magnesium-lithium alloy

Method used

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  • Deposition method for abrasion-resisting electric conduction nickel plating layer on surface of magnesium-lithium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The specific technical solutions are as follows:

[0037] (1) Two-step degreasing

[0038] Soak the magnesium-lithium alloy test piece in the degreasing mixed solution for 30 minutes, wash it with water, then immerse it in the chemical alkaline degreasing solution at a temperature of 65°C, and stir it slightly until the surface oil is completely removed, then take it out and rinse it with water , to get the degreasing test piece;

[0039] The degreasing mixed solution is made by mixing aviation gasoline and oily surfactant, and the content of the surfactant polyoxyethylene fatty alcohol ether in the degreasing mixed solution is 5g / L;

[0040] The chemical alkaline degreasing solution is made by mixing sodium citrate 30g / L, sodium phosphate 20g / L, sodium bicarbonate 10g / L and 0.3g / L imidazoline amphoteric surfactant and water;

[0041] (2) pickling activation

[0042] At a temperature of 35°C, gently stir and immerse the degreasing test piece in the pickling solution ...

Embodiment 2

[0049] The specific technical solutions are as follows:

[0050] (1) Two-step degreasing

[0051] Soak the magnesium-lithium alloy test piece in the degreasing mixed solution for 60 minutes, wash it with water, then immerse it in a chemical alkaline degreasing solution at a temperature of 80°C, and stir it slightly until the surface oil is completely removed, then take it out and rinse it with water. Obtain the degreasing test piece;

[0052] The degreasing mixed solution is made by mixing aviation gasoline and oily surfactant, and the content of the surfactant polyoxyethylene fatty alcohol ether in the degreasing mixed solution is 5g / L;

[0053] The chemical alkaline degreasing solution is prepared by mixing sodium citrate 40g / L, sodium phosphate 40g / L, sodium bicarbonate 15g / L and 0.5g / L imidazoline amphoteric surfactant and water.

[0054] (2) pickling activation

[0055] At a temperature of 40°C, gently stir and immerse the degreasing test piece in the pickling solution...

Embodiment 3

[0061] The specific technical solutions are as follows:

[0062] (1) Two-step degreasing

[0063] Soak the magnesium-lithium alloy test piece in the degreasing mixed solution for 45 minutes, wash it with water, and then immerse it in a slightly stirred chemical alkaline degreasing solution at a temperature of 72°C until the surface oil is completely removed, then take it out and rinse it with water. Obtain the degreasing test piece;

[0064] The degreasing mixed solution is made by mixing aviation gasoline and oily surfactant, and the content of the surfactant polyoxyethylene fatty alcohol ether in the degreasing mixed solution is 5g / L;

[0065] The chemical alkaline degreasing solution is prepared by mixing sodium citrate 35g / L, sodium phosphate 30g / L, sodium bicarbonate 12g / L and 0.4g / L imidazoline amphoteric surfactant and water.

[0066] (2) pickling activation

[0067] At a temperature of 40°C, gently stir and immerse the degreasing test piece in the pickling solution ...

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Abstract

The invention relates to a deposition method for an abrasion-resisting electric conduction nickel plating layer on the surface of a magnesium-lithium alloy. The deposition method comprises the following specific operation steps that a magnesium-lithium alloy material is subjected to oil removing, acid micro activation and nickel electroplating; a plating layer material with the thickness ranging from 10 microns to 15 microns is formed on the surface of the magnesium-lithium alloy material; and two-step oil removing of organic solvent oil removing and alkaline chemical oil removing is adopted, and therefore oil dirt on the surface of a magnesium-lithium alloy material test block can be sufficiently removed. The magnesium-lithium alloy material is subjected to slight erosion through the strong oxidizing property of acid, the purpose of microcosmic coarsening is achieved, and a magnesium-lithium alloy material layer has a hydrophilic function. A method that a metal nano fine particle composite material is formed by an electric conduction fiber in which nano-scale carbon black particles are added and boron nitride nano particles in a nickel electroplating basic formula is utilized, the adhesive force of the magnesium-lithium alloy material surface plating layer can be improved, very good solid solution diffusion is formed between the nickel plating layer and a substrate, and the interface bonding strength is enhanced; and the stress of the plating layer is released, the obtained plating layer is high in appearance quality, the electric conduction performance is excellent, and abrasion resistance is high.

Description

technical field [0001] The invention belongs to the technical field of metal material surface treatment, and in particular relates to a deposition method of a wear-resistant conductive nickel plating layer on the surface of a magnesium-lithium alloy. Background technique [0002] Magnesium-lithium alloy has ultra-light, high specific strength, high specific modulus, excellent rigidity, electrical conductivity, thermal conductivity, outstanding shock absorption performance, weldability, good machining and cold forming capabilities. Compared with ordinary magnesium alloys, it has a lower density, and the density is generally 1.3g / cm 3 ~1.6g / cm 3 ; It has better shock absorption and electromagnetic shielding performance, and has obvious advantages compared with steel, titanium alloy, aluminum alloy, engineering plastics, and carbon fiber composite materials. In the field of aerospace, the weight reduction of the structure is "constantly calculated". For every 1kg reduction in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D15/00C25D3/12C25D5/42
CPCC25D15/00C25D3/12C25D5/42
Inventor 刘东光王志海胡江华刘文科荣大伟
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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