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Magnesium-alloy surface coating method

A surface coating, magnesium alloy technology, used in sputtering, ion implantation, vacuum evaporation, etc.

Inactive Publication Date: 2007-04-04
MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method for coating the surface of magnesium alloys, which can effectively solve the problem of corrosion resistance of magnesium alloys, and there is no possible environmental pollution in traditional electroless plating methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] After cleaning the surface of the magnesium alloy parts to be plated, place them in a vacuum sputtering tank for sputtering of copper metal films. The process conditions of vacuum sputtering are: background vacuum<2.0e~4mbar, working vacuum 1 -3e~3mbar, the number of targets is 2, the working power is 15KW, the chain speed is 15Hz, and the number of passes is 1.

[0020] The surface of the obtained copper metal plating is dense, the film thickness is uniform, and the adhesion is good. After the peeling test of the coating with 3M gummed paper, no plating phenomenon occurs, and the same effect as chemical plating is achieved.

Embodiment 2

[0022] After cleaning the surface of the magnesium alloy parts to be plated, place them in a vacuum sputtering tank for sputtering of stainless steel films. The process conditions of vacuum sputtering are: background vacuum <2.0e~4mbar, working vacuum 1- 3e~3mbar, the number of targets is 2, the working power is 12KW, the chain speed is 15Hz, and the number of passes is 1.

[0023] The surface of the obtained copper metal plating is dense, the film thickness is uniform, and the adhesion is good. After the peeling test of the coating with 3M gummed paper, no plating phenomenon occurs, and the same effect as chemical plating is achieved.

Embodiment 3

[0025] After cleaning the surface of the magnesium alloy parts to be plated, place them in a vacuum sputtering tank for sputtering of copper metal films. The process conditions of vacuum sputtering are: background vacuum<2.0e~4mbar, working vacuum 1 -3e~3mbar, the number of targets is 1, the working power is 13KW, and the chain speed is 12Hz.

[0026] The surface of the obtained copper metal plating is dense, the film thickness is uniform, and the adhesion is good. After the peeling test of the coating with 3M gummed paper, there is no plating phenomenon, and the same effect as chemical electroplating is achieved.

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Abstract

This invention relates to a method that plating in the outside of the magnesium alloy, the method plating a layer or multilayer metallic film in the surface of the magnesium alloy by using the vacuum plating technology, the technological condition of vacuum plating are: Background vacuum <2.0e-4mbar, the working vacuum 1-3e-3mbar, the quantity of target material 1-3, job power12-15KW, the speed of the chain 15Hz. The metal which can be used as target material metal are one of the following metals that aluminium, copper , chromium , nickel , titanium , cobalt , zinc , vanadium or stainless steel or various. With the method plating in the magnesium alloy, it has abandoned the tradition chemistry plating method, it does not use the six-valence chromium ions in the production process, it is good for the environment, it is one kind of green environmental protection technics.

Description

technical field [0001] The invention relates to a metal surface treatment technology, in particular to a method for coating a metal film layer on a magnesium alloy surface by adopting a vacuum sputtering process. Background technique [0002] Magnesium alloys have high specific strength, specific stiffness, specific modulus of elasticity and good thermal and electrical conductivity, as well as good damping and shock absorption and electromagnetic shielding functions, and are widely used in automobile manufacturing, aerospace, electronic communication, etc. Known as "the green engineering material of the 21st century". However, due to the high chemical activity of magnesium alloy itself, it is easy to oxidize in the air, and it is easy to corrode under various environmental conditions, which hinders the wide application of magnesium alloy. [0003] Surface treatment of magnesium alloys, especially coating a layer of metal film on the surface of magnesium alloys, is one of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/34C23C14/54
Inventor 陈其亮赵顺王江锋
Owner MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY
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