Method for treating surface of magnesium-based metal to give metallic texture thereof

a magnesium-based metal and surface treatment technology, applied in the direction of cell components, coatings, printing, etc., can solve the problems of irregular oxide film giving difficulty in realizing metallic texture, difficult to form transparent anodizing film,

Inactive Publication Date: 2011-12-15
NUC ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0013]In one embodiment, a method is provided for treating a surface of a magnesium-based metal, in which a more qualified anodizing film may be realized by means of a cheaper and safer chemical polishing process before forming the anodizing film

Problems solved by technology

If the current density exceeds 1 A / dm2, an irregular oxide film may be generated on the surface of the magnesium-based metal, and such an irregular oxide film gives a difficulty in realizing metallic texture thereof.
Also, if the current density is less than 0.01 A / dm2, it is difficult to form a transparent anodizing film.

Method used

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  • Method for treating surface of magnesium-based metal to give metallic texture thereof
  • Method for treating surface of magnesium-based metal to give metallic texture thereof
  • Method for treating surface of magnesium-based metal to give metallic texture thereof

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Embodiment Construction

[0025]Hereinafter, an embodiment of a method for treating a surface of magnesium-based metal will be described in detail with reference to the accompanying drawings. Throughout the drawings, like reference numerals are used to designate like elements.

[0026]FIG. 1 is a flowchart illustrating a conventional method for treating a surface of a magnesium-based metal while FIG. 2 is a flowchart illustrating a method for treating a surface of a magnesium-based metal according to an embodiment.

[0027]As shown in FIG. 2, the surface treatment method according to this embodiment includes a buffing step 21, a degreasing or surface adjusting step 22, an anodizing treatment step 23 and a water washing step 24.

[0028]The buffing step 21 uses a chemical polishing scheme. After the buffing step 21 and the degreasing or surface adjusting step 22 are performed, the magnesium-based metal is immersed in a strongly alkaline electrolyte solution for an anodizing treatment, and then subject to the anodizing...

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Abstract

A method for treating a surface of a magnesium-based metal is disclosed for realizing a metallic texture of the magnesium-based metal. The method includes a buffing step of chemically polishing a surface of a magnesium-based metal by using a chemical polishing agent containing sodium nitride and sodium citrate; an immersing step of immersing the magnesium-based metal, which has been subject to the buffing step, into a strongly alkaline electrolyte solution of pH 11 or above; and an anodizing treatment step of forming a transparent anodizing film on the surface of the magnesium-based metal by applying current with a current density of 0.01 to 1 A/dm2 to the magnesium-based metal in the strongly alkaline electrolyte solution.

Description

BACKGROUND[0001]1. Technical Field[0002]The present disclosure relates to a method for treating a surface of a magnesium-based metal, and more particularly, to a method for treating a surface of a magnesium-based metal to give a metallic texture thereof with an environment-friendly scheme.[0003]2. Description of the Related Art[0004]A magnesium-based metal has been expected to be the most promising engineering material in the future, which can be substituted for an aluminum-based metal, in aspect of weight.[0005]At present, the price of magnesium is substantially equal to that of aluminum, but magnesium is lighter than aluminum. As such, magnesium is more advantageous than aluminum for vehicles, airplanes, laptop computers, cellular phones, etc. in which light weight is more important. For example, in the field of vehicles, magnesium alloys have recently been used instead of steel or aluminum alloys in order to decrease the weight of vehicles for the purpose of improving the fuel ef...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C25D11/30
CPCC25D11/30C25D11/16
Inventor KIM, JONG BOOLEE, KYUNG MUNDOH, SOO YOUNG
Owner NUC ELECTRONICS
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