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A method for preparing metal surface film with rapid self-healing ability

A metal surface, self-repair technology, applied in the direction of metal material coating technology, etc., can solve the problem of weak self-repair ability of the film layer, and achieve the effect of overcoming weak self-repair ability, convenient operation, and fast self-repair speed

Active Publication Date: 2017-04-26
CHUANHUA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few literatures on metal self-healing surface films at present, and the self-healing ability of the reported film layer is weak, and it usually takes hours or even days to achieve the repair.

Method used

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  • A method for preparing metal surface film with rapid self-healing ability

Examples

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Effect test

Embodiment 1

[0023] A method for preparing an AZ31 magnesium alloy surface film with fast self-repairing ability, the specific steps are as follows:

[0024] ①Hydrogen peroxide hydrothermal treatment: Immerse the clean AZ31 magnesium alloy workpiece in a reaction kettle filled with a hydrogen peroxide solution with a concentration of 1% by mass, seal the reaction kettle and place it in an oven at 100°C for 3 hours, then cool to Room temperature, take out the workpiece, rinse with pure water, and blow dry with compressed air;

[0025] ② Sol coating and curing: Apply the polymer sol evenly to the surface of the workpiece after ① treatment. The ratio of the volume of the sol to the area of ​​the metal workpiece to be treated is 50ml: 1m 2 , drying the workpiece at 60°C for 28 hours to obtain the AZ31 magnesium alloy surface film with rapid self-healing ability;

[0026] The preparation steps of the polymer sol are as follows: adding 20 grams of cetyltrimethylammonium bromide into 100 millili...

Embodiment 2

[0031] A method for preparing a pure copper surface film with rapid self-repair ability, the specific steps are as follows:

[0032] ①Hydrogen peroxide hydrothermal treatment: immerse the clean pure copper workpiece in a reaction kettle filled with a hydrogen peroxide solution with a concentration of 3% by mass, seal the reaction kettle and place it in an oven at 120°C for 5 hours, then cool to room temperature , Take out the workpiece, rinse it with pure water, and dry it with compressed air;

[0033] ② Sol coating and curing: Apply the polymer sol evenly to the surface of the workpiece after ① treatment. The ratio of the volume of the sol to the area of ​​the metal workpiece to be treated is 50ml: 1m 2 , drying the workpiece at 40°C for 36 hours to obtain a pure copper surface film with rapid self-healing ability;

[0034] The preparation steps of the polymer sol are as follows: adding 25 grams of cetyltrimethylammonium bromide into 100 milliliters of a concentration of 0.2...

Embodiment 3

[0037] A method for preparing a 2024 aluminum alloy surface film with rapid self-repairing capability, the specific steps are as follows:

[0038] ①Hydrogen peroxide hydrothermal treatment: immerse the clean 2024 aluminum alloy workpiece in a reaction kettle filled with a hydrogen peroxide solution with a concentration of 2% by mass, seal the reaction kettle and place it in an oven at 110°C for 4 hours, then cool to Room temperature, take out the workpiece, rinse with pure water, and blow dry with compressed air;

[0039] ② Sol coating and curing: Apply the polymer sol evenly to the surface of the workpiece after ① treatment. The ratio of the volume of the sol to the area of ​​the metal workpiece to be treated is 50ml: 1m 2 , drying the workpiece at 50°C for 30 hours to obtain a 2024 aluminum alloy surface film with rapid self-healing ability;

[0040]The preparation steps of the polymer sol are: adding 30 grams of cetyltrimethylammonium bromide into 100 milliliters of a conc...

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Abstract

The invention provides a preparation method of a metal surface film with quick self-repairing capability. The preparation method specifically comprises the following steps: performing hydrothermal treatment on a metal in a hydrogen peroxide solution at first, then uniformly coating a polymer sol to the surface of the metal workpiece after the hydrothermal treatment, and drying to solidify the soil, thereby obtaining the metal surface film with the quick self-repairing capability. The metal surface film prepared by the method provided by the invention is very high in self-repairing speed, and a scratch about 80 microns in width can be self-repaired in only 5 seconds. The preparation method provided by the invention is suitable for various metal materials including magnesium, aluminum, zinc, copper, nickel, titanium, zirconium and alloys thereof and steel, and has the characteristics of being simple in process and convenient to operate, needing no special instrument equipment, and being easy to realize large-scale industrialization treatment.

Description

technical field [0001] The invention belongs to the technical field of metal material surface treatment, and in particular relates to a method for preparing a metal surface film with rapid self-repair ability. Background technique [0002] Magnesium, aluminum, zinc, copper, steel, iron, nickel, titanium, zirconium and other metal materials are widely used in various fields of the national economy. Due to the relatively active chemical properties of these materials, in order to improve their service quality and prolong their service life, it is usually necessary to prepare a certain surface film on their surface, such as chemical conversion, anodic oxidation, micro-arc oxidation, etc. Adhesion with the metal substrate, and then form an outer coating on the basis of the underlying film by coating and other methods. Although this type of surface film can provide better protection for the metal substrate, it usually does not have self-healing ability, which is Once the metal su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/68
Inventor 李凌杰雷惊雷许雯婷文家新巫生茂潘复生
Owner CHUANHUA GRP
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