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Confining liquid for aluminum or aluminum alloy anode oxide film, and application thereof

An anodic oxidation film and anodic oxidation technology, which is applied in the field of aluminum or aluminum alloy anodic oxidation film sealing fluid, can solve the problems of environmental pollution, affecting human health, and high energy consumption for sealing holes

Inactive Publication Date: 2019-01-11
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The sealing solution of aluminum or aluminum alloy anodized film is mainly divided into boiling pure water, high temperature water, sealing solution mainly composed of nickel fluoride and sealing solution mainly composed of dichromate and nickel salt; among them, boiling pure water and high temperature The energy consumption of water-sealed holes is high, and the acid corrosion resistance is poor; while the sealing liquid mainly composed of nickel fluoride and the sealing liquid mainly composed of dichromate and nickel salt contain a large amount of fluorine, nickel and chromium, which will Pollution to the environment, affecting human health
It can be seen that it is difficult to meet the requirements of low energy consumption, strong corrosion resistance and environmental friendliness at the same time for aluminum or aluminum alloy anodized film sealing fluid

Method used

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  • Confining liquid for aluminum or aluminum alloy anode oxide film, and application thereof
  • Confining liquid for aluminum or aluminum alloy anode oxide film, and application thereof
  • Confining liquid for aluminum or aluminum alloy anode oxide film, and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] At room temperature, 2g sodium silicate, 7g ammonium fluozirconate, 0.5g cerium nitrate, 0.1g polyethylene glycol, 0.5g ethylenediaminetetraacetic acid, 2.5g mass concentration of 25% ammonia and 1000g deionized water Mixing, adjusting the pH value to 5.5 with a sulfuric acid solution with a mass fraction of 25%, to obtain a sealing solution for aluminum or aluminum alloy anodic oxidation film;

[0057] Put the aluminum alloy in the polishing solution and polish it for 3-5 minutes, take it out and rinse it with water; in a 160g / L sulfuric acid solution, set the DC voltage to 18V, perform DC anodization for 20 minutes, and wash it with water to obtain the oxidized aluminum alloy;

[0058] Under the condition of 30° C., soak the oxidized aluminum alloy in the aluminum or aluminum alloy anodized film sealing solution for 5 minutes, take it out, wash with water and dry naturally to obtain the sealed aluminum alloy.

[0059] Drop blue ink on the surface of the sealed aluminu...

Embodiment 2

[0069] At room temperature, 0.5g sodium silicate, 1g ammonium fluozirconate, 0.1g cerium nitrate, 0.01g polyethylene glycol, 0.05g ethylenediaminetetraacetic acid, 1g mass concentration of 25% ammonia and 1000g deionized water Mixing, adjusting the pH value to 4.5 with a sulfuric acid solution with a mass fraction of 25%, to obtain a sealing solution for aluminum or aluminum alloy anodic oxidation film;

[0070] Put the aluminum alloy in the polishing solution and polish it for 3-5 minutes, take it out and rinse it with water; in a 160g / L sulfuric acid solution, set the DC voltage to 18V, perform DC anodization for 20 minutes, and wash it with water to obtain the oxidized aluminum alloy;

[0071] Under the condition of 30° C., soak the oxidized aluminum alloy in the aluminum or aluminum alloy anodized film sealing solution for 5 minutes, take it out, wash with water and dry naturally to obtain the sealed aluminum alloy.

[0072] Drop blue ink on the surface of the sealed alumi...

Embodiment 3

[0075] At room temperature, mix 10g of sodium silicate, 20g of ammonium fluozirconate, 0.1g of cerium nitrate, 0.01g of polyethylene glycol, 0.05g of ethylenediaminetetraacetic acid, 1g of 25% ammonia and 1000g of deionized water , using a sulfuric acid solution with a mass fraction of 25% to adjust the pH value to 6.5 to obtain an aluminum or aluminum alloy anodic oxidation film sealing solution;

[0076] Put the aluminum alloy in the polishing solution and polish it for 3-5 minutes, take it out and rinse it with water; in a 160g / L sulfuric acid solution, set the DC voltage to 18V, perform DC anodization for 20 minutes, and wash it with water to obtain the oxidized aluminum alloy;

[0077] Under the condition of 30° C., soak the oxidized aluminum alloy in the aluminum or aluminum alloy anodized film sealing solution for 5 minutes, take it out, wash with water and dry naturally to obtain the sealed aluminum alloy.

[0078] Drop blue ink on the surface of the sealed aluminum al...

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Abstract

The invention provides a confining liquid for an aluminum or aluminum alloy anode oxide film. The confining liquid for the aluminum or aluminum alloy anode oxide film comprises the following components in parts by weight: 0.5-10 parts by weight of silicate, 1-20 parts by weight of fluozirconate, 0.1-2.5 parts by weight of cerate, 0.01-0.5 part by weight of surfactant, 0.05-1 part by weight of complexing agent, 1-5 parts by weight of ammonia water and 1000 parts by weight of water. The confining liquid for the aluminum or aluminum alloy anode oxide film does not contain nickel ions and free fluorine ions, and is environment-friendly, and free from causing harm to human health. Moreover, the confining liquid for the aluminum or aluminum alloy anode oxide film is capable of confining at roomtemperature, and low in energy consumption. The confining liquid for the aluminum or aluminum alloy anode oxide film has a great confining effect on the aluminum or aluminum alloy anode oxide film, and the confined aluminum alloy is high in corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of sealing aluminum or aluminum alloy oxide films, in particular to an aluminum or aluminum alloy anodic oxidation film sealing solution and application thereof. Background technique [0002] At present, aluminum or aluminum alloy is one of the most widely used and used metal materials, but aluminum or aluminum alloy is easy to corrode in humid environment, and it is often treated by anodic oxidation in industry to form a film thickness Anodized film with controlled porous structure, in order to improve the corrosion resistance and wear resistance of aluminum or aluminum alloy. However, the anodic oxidation film with a honeycomb porous structure has high porosity and adsorption, which makes it easy to be polluted, and the corrosive medium is easily adsorbed to the pores of the film layer to cause corrosion, which will reduce the service life of aluminum or aluminum alloy. . Therefore, in order to reduce th...

Claims

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Application Information

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IPC IPC(8): C25D11/24
CPCC25D11/246
Inventor 于升学郭腾达耿姝王雅伦解恒阳
Owner YANSHAN UNIV
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