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Method for preparing carbon-containing micro-arc oxidation ceramic layer

A technology of micro-arc oxidation and ceramic layer, which is applied in the direction of anodic oxidation, coating, electrolytic coating, etc., can solve the problem of affecting the preparation efficiency, high energy consumption, and the electrolyte cannot guarantee the wear resistance and corrosion resistance of the micro-arc oxidation ceramic layer, etc. problems, to achieve the effect of smooth surface, good wear reduction and wear resistance, high efficiency and energy saving in the preparation process

Inactive Publication Date: 2015-04-29
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Abstract
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Problems solved by technology

[0003] However, the electrolyte used in the existing technical solutions cannot guarantee the wear resistance and corrosion resistance of the finally prepared micro-arc oxidation ceramic layer, and the process of preparing the micro-arc oxidation ceramic layer consumes too much energy, which also affects the production efficiency.

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  • Method for preparing carbon-containing micro-arc oxidation ceramic layer
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  • Method for preparing carbon-containing micro-arc oxidation ceramic layer

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Embodiment Construction

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] In the embodiment of the present invention, graphene is added to the electrolyte, and then a micro-arc oxidation ceramic layer with a smooth and dense surface and a certain thickness is prepared on the surface of magnesium by using micro-arc oxidation technology. Yes, and the voltage of micro-arc oxidation treatment is only 180-230V, which is more efficient and energy-saving. Embodiments of the present invention will be further described in ...

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Abstract

The invention discloses a method for preparing a carbon-containing micro-arc oxidation ceramic layer. The method comprises the following steps: firstly respectively adding Na2SiO3, NaF, KOH and graphene into a container, and pouring a proper amount of deionized water into the container; putting the container into an ultrasonic wave instrument until graphene is completely dissolved or uniformly dispersed in the solution so as to generate electrolyte; pouring the prepared electrolyte into a stainless steel electrolytic cell, carrying out micro-arc oxidation by virtue of a direct-current pulsed power supply by taking a pre-prepared pure magnesium sample as a positive electrode and the stainless steel electrolytic cell as a negative electrode, so as to obtain the carbon-containing micro-arc oxidation ceramic layer. By virtue of the method, the surface of the carbon-containing micro-arc oxidation ceramic layer is relatively smooth and compact, relatively good anti-attrition and wear-resisting effects are achieved, and an energy-efficient preparation process is realized.

Description

technical field [0001] The invention relates to the technical field of chemical manufacturing, in particular to a method for preparing a carbon-containing micro-arc oxidation ceramic layer. Background technique [0002] At present, compared with other materials, magnesium and magnesium alloys have the advantages of abundant resources, low density, high strength, excellent thermal conductivity, excellent rigidity, good electromagnetic shielding performance, low price, recyclability, and environmental protection. Materials are widely used in automotive, electronics, 3C, aerospace and medical industries. The micro-arc oxidation technology can grow a layer of ceramic film on the surface of magnesium and magnesium alloys. By controlling the process, the resulting ceramic film can have excellent wear resistance and corrosion resistance, as well as high hardness and insulation. The main factors affecting the effect of micro-arc oxidation film formation include: electrical paramete...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/30C25D15/00
CPCC25D11/30C25D15/00
Inventor 陈飞曾云赵云
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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