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Magnesium alloy surface micro arc oxidation ceramic layer hole sealing agent and hole sealing method

A technology of micro-arc oxidation and magnesium alloy, which is applied in anodic oxidation, metal material coating process, coating, etc., can solve the problems of unsatisfactory sealing effect and complexity, achieve easy operation of sealing process and improve corrosion resistance , Good sealing effect

Inactive Publication Date: 2018-04-13
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, these existing sealing agents and sealing methods either contain nickel salts that pollute the environment, or contain polymer compounds that are harmful to the human body, or the sealing process is complicated to operate and requires a harsh external environment, and , the final sealing effect is not ideal

Method used

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  • Magnesium alloy surface micro arc oxidation ceramic layer hole sealing agent and hole sealing method
  • Magnesium alloy surface micro arc oxidation ceramic layer hole sealing agent and hole sealing method

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preparation example Construction

[0021] Wherein, the sodium stearate, sodium metaaluminate and sodium dodecylbenzenesulfonate can all be analytical reagents. The preparation method of the micro-arc oxidation ceramic layer on the surface of the magnesium alloy may include: placing the magnesium alloy in an electrolyte solution containing graphene for micro-arc oxidation treatment, the time of the micro-arc oxidation treatment is 10 to 60 minutes, and the output voltage is 350 to 300 minutes. 500V, the duty ratio of the power supply is 30-60%, so as to prepare the micro-arc oxidation ceramic layer on the surface of the magnesium alloy; wherein, the electrolyte containing graphene is composed of the following raw materials in parts by weight: 10-20 parts of sodium silicate , 5-10 parts of potassium hydroxide, 1-5 parts of sodium dodecylbenzenesulfonate, and 0.05-0.1 parts of graphene.

[0022] Specifically, the sealing method for the micro-arc oxidation ceramic layer on the surface of the magnesium alloy provide...

Embodiment 1

[0030] A micro-arc oxidation ceramic layer sealing agent on the surface of a magnesium alloy, which is prepared by uniformly mixing the following raw materials in parts by weight: 10 parts of sodium stearate, 10 parts of sodium metaaluminate, and 2 parts of sodium dodecylbenzenesulfonate , 28 parts of ethanol with a mass fraction of 98%, and 50 parts of deionized water.

[0031]Specifically, a magnesium alloy workpiece whose size is 30mm × 30mm × 5mm is placed in an electrolyte solution containing graphene (by weight, the electrolyte solution containing graphene consists of 10 parts of sodium silicate, hydroxide 5 parts of potassium, 2 parts of sodium dodecylbenzenesulfonate and 0.05 parts of graphene) carry out micro-arc oxidation treatment, the time of micro-arc oxidation treatment is 30min, the output voltage is 450V, and the duty cycle of power supply is 45%. After the micro-arc oxidation treatment is completed, the magnesium alloy workpiece is taken out, cleaned with deio...

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Abstract

The invention discloses a magnesium alloy surface micro arc oxidation ceramic layer hole sealing agent and a hole sealing method. The magnesium alloy surface micro arc oxidation ceramic layer hole sealing agent comprises, by weight, 5-30 parts of sodium stearate, 5-20 parts of sodium metaaluminate, 1-5 parts of sodium dodecyl benzene sulfonate, 20-50 parts of ethanol with the mass fraction being 98% and 20-50 parts of deionized water. According to the hole sealing method, a magnesium alloy surface micro arc oxidation ceramic layer to be subjected to hole sealing is soaked in the magnesium alloy surface micro arc oxidation ceramic layer hole sealing agent to be subjected to hole sealing treatment, the temperature of the hole sealing agent is 25-30 DEG C, and the soaking time is 1-5 h. The magnesium alloy surface micro arc oxidation ceramic layer hole sealing agent and the hole sealing method have a good hole sealing effect on the magnesium alloy surface micro arc oxidation ceramic layer, the hole sealing agent is environment-friendly and non-toxic, the hole sealing process is simple and easy to operate, and the corrosion resistant performance of the magnesium alloy surface micro arcoxidation ceramic layer can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of micro-arc oxidation ceramic layer sealing on the surface of magnesium alloys, in particular to a sealing agent and a hole sealing method for the micro-arc oxidation ceramic layer on the surface of magnesium alloys. Background technique [0002] Magnesium and magnesium alloys are important light metal structural materials, which have the advantages of light specific gravity, high specific strength and specific stiffness, good impact resistance, strong damping and shock absorption performance, good thermal conductivity, strong electromagnetic shielding ability, and easy recycling. In aerospace, transportation, printing, construction and other fields, it has advantages that other materials cannot match. However, the chemical properties of magnesium are lively, and the naturally formed surface oxide film has poor corrosion resistance and cannot play a protective role. Therefore, the application of magnesium a...

Claims

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Application Information

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IPC IPC(8): C25D11/30C23C4/18C25D5/48
CPCC25D11/30C23C4/18C25D5/48
Inventor 陈飞张玉林左佑于佩航
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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