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A kind of environment-friendly magnesium alloy anodic oxidation electrolyte and magnesium alloy anodic oxidation method

An anodic oxidation and magnesium alloy technology, applied in the field of electrolyte, can solve problems such as weak adhesion, poor corrosion resistance, and environmental pollution

Active Publication Date: 2019-07-16
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, the present invention provides an environment-friendly magnesium alloy anodic oxidation electrolyte and a method for applying it to magnesium alloy anodic oxidation. The technical problem to be solved is to overcome the environmental pollution, Poor corrosion resistance, weak adhesion, uneven film formation and other defects

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  • A kind of environment-friendly magnesium alloy anodic oxidation electrolyte and magnesium alloy anodic oxidation method
  • A kind of environment-friendly magnesium alloy anodic oxidation electrolyte and magnesium alloy anodic oxidation method
  • A kind of environment-friendly magnesium alloy anodic oxidation electrolyte and magnesium alloy anodic oxidation method

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Effect test

Embodiment 1

[0064] Magnesium alloy sample: AZ31 magnesium alloy plate;

[0065] The composition of environment-friendly magnesium alloy anodizing electrolyte: configure in deionized water according to the concentration of each component of the environment-friendly magnesium alloy anodizing electrolyte of embodiment 1 in table 1;

[0066] Step 1, modification treatment of silicon carbide and tungsten carbide: take silicon carbide and carry out surface modification treatment in an aqueous solution of anionic surfactant containing 5% by mass fraction, the time is 2h, the temperature is 50°C, silicon carbide and tungsten carbide with a mass fraction of 5% The mass ratio of % anionic surfactant solution is 1:100, promptly obtains the silicon carbide after modification; Take tungsten carbide, process according to the modification treatment method of above-mentioned silicon carbide, obtain the tungsten carbide after modification;

[0067] Step 2, prepare the electrolyte: add sodium hydroxide, so...

Embodiment 2

[0073] Magnesium alloy sample: AZ31 magnesium alloy plate;

[0074] The composition of environment-friendly magnesium alloy anodizing electrolyte: according to the concentration of each component of the environment-friendly magnesium alloy anodizing electrolyte of embodiment 2 in table 1, configure in deionized water;

[0075] Step 1, modification treatment of silicon carbide and tungsten carbide: take silicon carbide and carry out surface modification treatment in an aqueous solution of anionic surfactant containing 5% by mass fraction, the time is 2h, the temperature is 50°C, silicon carbide and tungsten carbide with a mass fraction of 5% The mass ratio of % anionic surfactant solution is 1:100, promptly obtains the silicon carbide after modification; Take tungsten carbide, process according to the modification treatment method of above-mentioned silicon carbide, obtain the tungsten carbide after modification;

[0076] Step 2, prepare the electrolyte: add sodium hydroxide, s...

Embodiment 3

[0082] Magnesium alloy sample: AZ31 magnesium alloy plate;

[0083] The composition of environment-friendly magnesium alloy anodizing electrolyte: according to the concentration of each component of the environment-friendly magnesium alloy anodizing electrolyte of embodiment 3 in table 1, configure in deionized water;

[0084] Step 1, modification treatment of silicon carbide and tungsten carbide: take silicon carbide and carry out surface modification treatment in an aqueous solution of anionic surfactant containing 5% by mass fraction, the time is 2h, the temperature is 50°C, silicon carbide and tungsten carbide with a mass fraction of 5% The mass ratio of % anionic surfactant solution is 1:100, promptly obtains the silicon carbide after modification; Take tungsten carbide, process according to the modification treatment method of above-mentioned silicon carbide, obtain the tungsten carbide after modification;

[0085] Step 2, prepare the electrolyte: add sodium hydroxide, s...

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Abstract

The invention provides an environment-friendly magnesium alloy anodic oxidation electrolyte solution and a magnesium alloy anodic oxidation method applying the environment-friendly magnesium alloy anodic oxidation electrolyte solution. The environment-friendly magnesium alloy anodic oxidation electrolyte solution comprises deionized water and further comprises, 5-80g / L of sodium hydroxide, 1-50g / / L of sodium carbonate, 5-80g / L of sodium silicate, 10-70g / L of sodium tetraborate, 0.3-15g / L of tungsten carbide and 0.1-5g / L of silicon carbide which are added into the deionized water according to the volume of deionized water. The environment-friendly magnesium alloy anodic oxidation electrolyte solution is applied to magnesium alloy anodic oxidation, contains no harmful elements such as Cr, Pand F, causes no environmental pollution when oxidizing the surface of magnesium alloy, meets environmental protection requirements, and generates a smooth and uniform oxidation layer with good corrosion resistance on the surface of magnesium alloy.

Description

technical field [0001] The invention relates to the technical field of electrolytes, in particular to an environment-friendly magnesium alloy anodic oxidation electrolyte and a method for applying the same to the anodic oxidation of magnesium alloys. Background technique [0002] Magnesium alloy is an alloy composed of magnesium and other elements. Its characteristics are: low density (1.8g / cm 3 Magnesium alloy or so), high strength, large elastic modulus, good heat dissipation, good shock absorption, greater impact load capacity than aluminum alloy, and good corrosion resistance to organic substances and alkalis. The main alloying elements are aluminum, zinc, manganese, cerium, thorium and a small amount of zirconium or cadmium. Magnesium-aluminum alloys are currently the most widely used, followed by magnesium-manganese alloys and magnesium-zinc-zirconium alloys. Mainly used in aviation, aerospace, transportation, chemical industry, rocket and other industrial sectors. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/30
CPCC25D11/024C25D11/30
Inventor 屠晓华
Owner JIAXING UNIV