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Magnesium alloy anode micro-arc oxidation electrolyte and method for magnesium alloy anode micro-arc oxidation using the electrolyte

A micro-arc oxidation, magnesium alloy technology, applied in anodizing, electrolytic coating, surface reaction electrolytic coating, etc., can solve problems such as defects of magnesium oxide ceramic layer, increase film-forming stability, change film-forming color, reduce The effect of conductivity

Active Publication Date: 2022-07-08
昆山博洽电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existence of many defects in magnesium alloys, such as solid solution precipitates, second phases, and dislocations, defects will occur in the magnesium oxide ceramic layer formed after anodic micro-arc oxidation on the surface of magnesium alloys.

Method used

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  • Magnesium alloy anode micro-arc oxidation electrolyte and method for magnesium alloy anode micro-arc oxidation using the electrolyte
  • Magnesium alloy anode micro-arc oxidation electrolyte and method for magnesium alloy anode micro-arc oxidation using the electrolyte
  • Magnesium alloy anode micro-arc oxidation electrolyte and method for magnesium alloy anode micro-arc oxidation using the electrolyte

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Magnesium alloy anode micro-arc oxidation electrolyte, the concentration of each component in the electrolyte is:

[0025] 30g / L sodium hydroxide, 30g / L potassium silicate, 30g / L potassium carbonate, 5g / L sodium borate, 5ml / L EDTA, 20ml / L ethylene glycol, 3ml / L glycerol alcohol, 10ml / L triethanolamine, 5ml / L 8-hydroxyquinoline.

[0026] A method for micro-arc oxidation of magnesium alloy anode using magnesium alloy anode micro-arc magnesium oxidation electrolyte, comprising the following steps:

[0027] S1: get the sodium hydroxide of 30g / L, the potassium silicate of 30g / L, the potassium carbonate of 30g / L, the sodium borate of 5g / L, the EDTA of 5ml / L, the ethylene glycol of 20ml / L, 3ml / L glycerol, 10ml / L of triethanolamine, and 5ml / L of 8 hydroxyquinoline were added successively in deionized water, and stirred to dissolve them completely to obtain a magnesium alloy anode micro-arc magnesium oxidation electrolyte;

[0028] S2: prepare a magnesium alloy sample, wash th...

Embodiment 2

[0032] Magnesium alloy anode micro-arc oxidation electrolyte, the concentration of each component in the electrolyte is:

[0033] 10g / L potassium hydroxide, 10g / L sodium silicate, 10g / L sodium carbonate, 18g / L potassium borate, 0.5ml / L EDTA, 5ml / L ethylene glycol, 3ml / L propylene Triol, 3ml / L of triethanolamine, 0.5ml / L of 8-hydroxyquinoline.

[0034] A method for micro-arc oxidation of magnesium alloy anode using magnesium alloy anode micro-arc magnesium oxidation electrolyte, comprising the following steps:

[0035] S1: get the potassium hydroxide of 10g / L, the sodium silicate of 10g / L, the sodium carbonate of 10g / L, the potassium borate of 18g / L, the EDTA of 0.5ml / L, the ethylene glycol of 5ml / L, 3ml / L of glycerol, 3ml / L of triethanolamine, and 0.5ml / L of 8-hydroxyquinoline were successively added to deionized water, and stirred to dissolve completely to obtain a magnesium alloy anode micro-arc magnesium oxidation electrolyte;

[0036] S2: prepare a magnesium alloy sampl...

Embodiment 3

[0040] Magnesium alloy anode micro-arc oxidation electrolyte, the concentration of each component in the electrolyte is:

[0041] 60g / L potassium hydroxide and sodium hydroxide mixture, 60g / L sodium silicate and potassium silicate mixture, 20g / L sodium carbonate and potassium carbonate mixture, 30g / L potassium borate, 10ml / L EDTA, 30ml / L ethylene glycol, 15ml / L glycerol, 20ml / L triethanolamine, 10ml / L 8-hydroxyquinoline.

[0042] A method for micro-arc oxidation of magnesium alloy anode using magnesium alloy anode micro-arc magnesium oxidation electrolyte, comprising the following steps:

[0043] S1: get the mixture of potassium hydroxide and sodium hydroxide of 60g / L, the mixture of sodium silicate and potassium silicate of 60g / L, the mixture of sodium carbonate and potassium carbonate of 20g / L, the potassium borate of 30g / L, 10ml / L of EDTA, 30ml / L of ethylene glycol, 15ml / L of glycerol, 20ml / L of triethanolamine, and 10ml / L of 8-hydroxyquinoline were successively added to d...

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Abstract

The invention relates to a magnesium alloy anode micro-arc oxidation electrolyte, which is characterized in that the concentration of each component in the electrolyte is: 10-60g / L hydroxide, 10-60g / L silicate, 10-30g / L 5-30g / L of borate, 0.5-10ml / L of EDTA, 5-30ml / L of ethylene glycol, 1-15ml / L of glycerol, 3-20ml / L of triglyceride Ethanolamine, 0.5-10ml / L of 8-hydroxyquinoline. The advantages of the invention are: improve the uniformity, compactness and stability of the film layer, improve and suppress the discharge spark, increase the absorption of surface negative ions, avoid the second phase and solid solution precipitates to generate large sparks, and the corrosion resistance of the film layer. Works well.

Description

technical field [0001] The invention relates to an electrolyte for micro-arc oxidation of magnesium alloy anodes and a method for micro-arc oxidation of magnesium alloy anodes by using the electrolyte, and belongs to the technical field of metal surface treatment. Background technique [0002] Magnesium alloy has light weight and low density (1.8g / cm 3 left and right), high strength, large elastic modulus, good heat dissipation, good shock absorption, greater impact load capacity than aluminum alloy, high resistance to organic matter and alkali corrosion, high thermal conductivity and electrical conductivity, non-magnetic, good shielding and no It has broad application prospects in many fields such as automobiles, aerospace, electronics, military, communications, optical instruments, computers, etc., and is known as "the most promising and promising green engineering materials in the 21st century". However, magnesium alloys have great chemical activity and are prone to corr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/30
CPCC25D11/026C25D11/30Y02P10/20
Inventor 王畯闳
Owner 昆山博洽电子科技有限公司
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