Magnesium alloy surface hydrophobization compound processing method

A composite treatment, magnesium alloy technology, applied in the direction of anodic oxidation, etc., can solve the problems of super-hydrophobic surface service life limit, complex process, not ideal, etc., to achieve the effect of smooth and delicate hand feeling, high processing efficiency, dense and orderly growth
CN101654801AInactive Publication Date: 2010-02-24SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2010-02-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a magnesium alloy surface hydrophobization compound processing method combining micro-arc oxidation with an organic film coating technology and comprising the following steps:preparing a micro-nano porous super-hydrophilic surface by the micro-arc oxidation; and carrying out hydrophobization processing of an organic coating film. The invention prepares a micro-nano porouscompound structural film with hydrophobic and super-hydrophobic functions and excellent corrosion resistance; according to actual demand, a static contact angle of the compound structural film and distilled water is controllable within the range from 110 to174 degrees and the thickness of the compound structural film is controllable within the range from 2 to 30 micrometers, the electrokinetic potential polar characteristic, the electrical potential shuffle the corrosion current density of the compound structural film in a 3.5% NaCl solution or 0.1m / LNaCl solution are all reduced by 3 magnitude orders. The invention is suitable for the corrosion, pollution and water prevention of a magnesium alloy workpiece with large area and also suitable for the shell of a light precise magnesium alloyproduct to widen the application field of magnesium alloys and has simple and convenient technology, short period, low cost and easy industrialized production.
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Description

technical field

[0001] The invention relates to the technical field of magnesium alloy surface modification, in particular to a composite treatment method for magnesium alloy surface hydrophobization by combining micro-arc oxidation and organic coating technology. Background technique

[0002] Wettability is an important characteristic of the surface of a material, and hydrophilicity and hydrophobicity are two aspects that characterize the wettability of a material surface, and are important parameters that directly reflect the surface free energy of a material. The change of surface wettability (hydrophilicity and hydrophobicity) of materials can improve the surface properties of materials and expand the application range of materials, which plays an important role in industrial and agricultural production and people's daily life. By achieving hydrophilic-hydrophobic conversion on the surface of magnesium alloys, the preparation of functional films with hydrophobic or super...

Claims

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