Preparation method of micro-arc oxidation membrane of magnetic powder composite magnesium alloy

A magnetic powder, micro-arc oxidation technology, applied in anodizing, electrolytic coatings, coatings, etc., can solve the problems of limiting the application and development of micro-arc oxidation technology, and the single function of micro-arc oxidation film layer, so as to improve the resistance to Corrosion, the effect of expanding the application field
CN104294347AInactive Publication Date: 2015-01-21SHENYANG LIGONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENYANG LIGONG UNIV
Publication Date
2015-01-21
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a preparation method of a magnesium alloy surface corrosion-resistant and functional protective layer, particularly relates to the preparation method of a micro-arc oxidation membrane of a magnetic powder composite magnesium alloy, and belongs to the technical field of surface treatment. By adding nano magnetic powder into a micro-arc oxidation electrolyte, a composite micro-arc oxidation ceramic membrane uniformly covered with magnetic powder can be formed on the surface of a magnesium alloy, micro-pores and cracks in the surface of a micro-arc oxidation membrane layer can be reduced by virtue of a composite membrane layer, and the corrosion resistance of the magnesium alloy is improved; meanwhile, the micro-arc oxidation membrane has a magnetic function and certain properties such as electromagnetic wave absorption, and the application field of the micro-arc oxidation membrane is expanded.
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Description

technical field

[0001] The invention relates to a method for preparing a corrosion-resistant and functional protective layer on the surface of a magnesium alloy, in particular to a method for preparing a magnetic powder composite magnesium alloy micro-arc oxidation film, which belongs to the technical field of surface treatment. technical background

[0002] Magnesium alloy is characterized by its low density, high specific strength and specific stiffness, excellent machinability and castability, good damping and shock absorption, high thermal conductivity, high dimensional stability, excellent electromagnetic shielding performance and Excellent properties such as recycling are considered to be the most potential green materials for development and application in the 21st century. However, the low corrosion resistance of magnesium alloys limits its application.

[0003] Micro-arc oxidation is a new technology for in-situ growth of ceramic layers directly on the surface of A...

Claims

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