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Aluminum alloy micro-arc oxidation electrolyte, method and product thereof

An aluminum alloy product, the technology of micro-arc oxidation, which is applied in anodizing, electrolytic coating, surface reaction electrolytic coating, etc., can solve the problems of poor corrosion resistance, large micropore diameter, and too large micropore diameter of micro-arc oxidation film. , to achieve a smooth surface of the film

Inactive Publication Date: 2020-05-08
华孚精密科技(马鞍山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When aluminum alloy products are subjected to micro-arc oxidation, the surface of the micro-arc oxidation film is rough, the pore size is large, and the corrosion resistance is poor. The key factor affecting the above effect is that the micro-pore diameter of the micro-arc oxidation film is too large

Method used

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Examples

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Embodiment Construction

[0023] A preferred embodiment of the micro-arc oxidation of the aluminum alloy of the present invention is given below.

[0024] The aluminum alloy trial piece made of aluminum alloy 6063 is selected, and the size of the aluminum alloy trial piece is 110*70*1.5mm. Then the test piece is fully degreased and degreasing. Usually, the test piece is put into a cleaning agent composed of acetone and anhydrous ethanol, and cleaned in an ultrasonic cleaning agent for 5-10 minutes. Then put it in an oven, and dry the test piece at a temperature of 120°C for later use.

[0025] To prepare a micro-arc oxidation solution, in this example, 10 g / L of sodium phosphate, 8 g / L of sodium hydroxide, and 12 g / L of sodium citrate are used, and the micro-arc oxidation electrolyte is obtained by mixing and stirring according to the above component concentrations.

[0026] In this implementation, the micro-arc oxidation power supply is set as a pulse power supply, the aluminum alloy trial piece is u...

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Abstract

The invention relates to the technical field of micro-arc oxidation, in particular to an aluminum alloy micro-arc oxidation electrolyte, a method and a product thereof. The aluminum alloy micro-arc oxidation electrolyte is prepared from the components: 5-30g / L of water-soluble phosphate, 1-10g / L of alkali metal hydroxide and 5-30g / L of citrate, and a solvent is deionized water. Compared with the prior art, the formula of die-casting aluminum micro-arc oxidation electrolyte can solve the problems of rough surface, large micropore diameter and poor corrosion resistance of a micro-arc oxidation film prepared by an existing electrolyte. The micropore diameter of the prepared micro-arc oxidation film is only 0.5-2[mu]m, the requirements of aluminum alloy micro-arc oxidation for corrosion resistance can be met, and the surface of the film is more smooth.

Description

【Technical field】 [0001] The invention relates to the technical field of micro-arc oxidation, in particular to an aluminum alloy micro-arc oxidation electrolyte, a method and a product thereof. 【Background technique】 [0002] Micro-arc oxidation technology refers to the use of arc discharge to enhance and activate the reaction on the anode on the basis of ordinary anodic oxidation, so as to form high-quality reinforced ceramics on the surface of workpieces made of aluminum, titanium, magnesium and their alloys. membrane method. A voltage is applied to the workpiece through a special micro-arc oxidation power supply, so that the metal on the surface of the workpiece interacts with the electrolyte solution, and a micro-arc discharge is formed on the surface of the workpiece. Under the action of high temperature, electric field and other factors, a ceramic film is formed on the metal surface to reach the workpiece. The purpose of surface strengthening. [0003] When micro-arc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/06
CPCC25D11/026C25D11/06C25D11/024
Inventor 于飞
Owner 华孚精密科技(马鞍山)有限公司
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