Method for directly generating black corrosion-resistant micro-arc oxidation film layer on steel surface

A technology of micro-arc oxidation on the surface of steel, which is applied to the new process of preparing ceramic coatings on the surface of steel materials. The field of black wear-resistant and corrosion-resistant micro-arc oxidation film is directly generated on the surface of steel, which can solve the problem of easy rust and wear, and long development cycle , poor effect and other problems, to achieve the effect of stable and reliable process, expanded application range and convenient operation
CN104831332AInactive Publication Date: 2015-08-12JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU UNIV
Publication Date
2015-08-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to the steel surface intensified machining technique, and specifically refers to a method for directly generating a black corrosion-resistant micro-arc oxidation film layer on the steel surface. Firstly, the surface of a steel product is mechanically polished, and then is cleaned to remove oil and stains. After that, the steel product is placed in an electrolyte solution to serve as an anode for the micro-arc-oxidation treatment. In this way, the steel product with the black micro-arc oxidation film on the surface thereof is simply cleaned and dried. The method is characterized in that the electrolyte solution basically comprises the following components: 6-32 g / l of sodium aluminate, 2-96 g / l of sodium silicate, and 0.05-10 g / l of sodium dihydrogen phosphate. According to the technical scheme of the invention, a black oxide ceramic film is directly generated on the steel surface.
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Description

technical field

[0001] The invention relates to a steel surface strengthening treatment technology, in particular to a new preparation process of a ceramic coating on the surface of a steel material, in particular to a method for directly forming a black wear-resistant and corrosion-resistant micro-arc oxidation film on the steel surface. Background technique

[0002] Due to its high strength, high toughness, easy processing, and low cost, steel materials have become the most widely used metal materials in industry, but they are prone to rust and wear; the selection of special high-quality corrosion-resistant and wear-resistant steel can effectively solve the problem of corrosion and wear. Wear problems, but often the development cycle is long; the surface strengthening treatment of steel materials, especially the surface ceramicization can effectively improve its wear resistance and corrosion resistance.

[0003] Micro-arc oxidation technology, also known as plasma electrol...

Claims

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