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Method for preparing super-hydrophobic copper coating on surface of aluminum alloy

A technology of aluminum alloy surface and copper coating, applied in metal material coating process, coating, liquid chemical plating and other directions, can solve problems such as peeling and weak bonding, and achieve a wide range of applications, simple process and broad application prospects Effect

Inactive Publication Date: 2017-10-20
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The micro-nano structure of the super-hydrophobic coating prepared by this technology is mainly attached to the electrodeposited layer, and the combination of the micro-nano structure formed after drying and annealing with the electrodeposited layer is relatively weak, and it is easier to fall off from the electrodeposited layer under the action of external force

Method used

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  • Method for preparing super-hydrophobic copper coating on surface of aluminum alloy
  • Method for preparing super-hydrophobic copper coating on surface of aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0022] (1) Grind the 6061 aluminum alloy sample with metallographic water sandpaper step by step from 300# to 2000#, and ultrasonically clean the polished sample with acetone, absolute ethanol, and deionized water for 5 minutes to remove surface impurities and oil stains ;

[0023] (2) Treat the aluminum alloy sample prepared above in alkaline washing solution (20g / L NaOH aqueous solution) for 5 minutes to further remove impurities and oil stains on the surface, and improve the reactivity of the surface. After taking it out, wash it with a large amount of deionized water Rinse, remove residual alkaline wash, and dry quickly;

[0024] (3) Put the above-mentioned treated aluminum alloy sample into the CuSO2 sample of 50g / L 4 ·5H 2 O and 5g / L FeCl 3 ·6H 2 The chemical reaction is carried out in the mixed aqueous solution composed of O, and the reaction time is 1min. After the reaction, the sample is placed in a drying oven and dried at 60°C to obtain a copper coating with a f...

specific Embodiment 2

[0027] (1) Polish the pure aluminum sample with metallographic water sandpaper step by step from 300# to 2000#, and ultrasonically clean the polished sample with acetone, absolute ethanol, and deionized water for 6 minutes to remove surface impurities and oil stains;

[0028] (2) Treat the pure aluminum sample prepared above in alkaline washing solution (10g / L NaOH aqueous solution) for 5 minutes to further remove impurities and oil stains on the surface and improve the reactivity of the surface. After taking it out, wash it with a large amount of deionized water Rinse, remove residual alkaline wash, and dry quickly;

[0029] (3) Put the above-mentioned processed pure aluminum sample into the CuSO2 of 25g / L 4 ·5H 2 O and 5g / L FeCl 3 ·6H 2 The chemical reaction is carried out in the mixed aqueous solution composed of O, and the reaction time is 2min. After the reaction, the sample is placed in a drying oven and dried at 80°C to obtain a copper coating with a feather-like mic...

specific Embodiment 3

[0032] (1) Grind the 6061 aluminum alloy sample with metallographic water sandpaper step by step from 300# to 2000#, and ultrasonically clean the polished sample with acetone, absolute ethanol, and deionized water for 8 minutes to remove surface impurities and oil stains ;

[0033] (2) Treat the aluminum alloy sample prepared above in alkaline washing solution (30g / L NaOH aqueous solution) for 5 minutes to further remove impurities and oil stains on the surface and improve the reactivity of the surface. After taking it out, wash it with a large amount of deionized water Rinse, remove residual alkaline wash, and dry quickly;

[0034] (3) Put the above-mentioned processed aluminum alloy sample into the CuSO4 sample of 75g / L 4 ·5H 2 O and 10g / L FeCl 3 ·6H 2 The chemical reaction is carried out in the mixed aqueous solution composed of O, and the reaction time is 2min. After the reaction, the sample is placed in a drying oven and dried at 100°C to obtain a copper coating with ...

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Abstract

The invention discloses a method for preparing a super-hydrophobic copper coating on the surface of aluminum alloy. The method comprises the steps that firstly, a processed aluminum alloy sample is soaked into a mixed solution of a certain concentration for reaction, the mixed solution is composed of cupric sulfate pentahydrate and ferric chloride hexahydrate, and a copper coating with a plume-like microstructure is generated on the surface of the sample; secondly, the sample is put into a vacuum tube type furnace and subjected to heat treatment under vacuum for certain time, and the interface bonding strength of the surface copper coating and the aluminum alloy substrate is improved; and finally, the copper coating is subjected to low energy modification in a stearic acid absolute ethyl alcohol solution of a certain concentration, and the surface copper coating with a super-hydrophobic function is obtained. Through measuring, the static contact angle of deionized water and the surface of the super-hydrophobic copper coating is larger than 150 degrees, and the rolling angle is smaller than 10 degrees. The method for preparing the super-hydrophobic copper coating on the surface of the aluminum alloy does not need complex and expensive equipment, and is low in cost, simple in process, good in repeatability and suitable for industrialized production.

Description

technical field [0001] The invention belongs to the field of surface modification of metal materials, and relates to a method for preparing a superhydrophobic coating, in particular to a method for preparing a superhydrophobic copper coating on the surface of an aluminum alloy. Background technique [0002] The extensive application of aluminum and its alloys in construction, machinery manufacturing, circuit transmission and electronic components has made it a research hotspot of metal materials. However, the reactivity of aluminum is relatively high, and the surface of aluminum and aluminum alloys is prone to pollution and corrosion in the service environment, which will inevitably cause losses. In addition, the aluminum stranded wires used in high-voltage transmission cables are prone to condensate, ice, and frost in winter. The light ones will cause power loss, and the severe ones will cause problems such as downed poles and towers on the transmission line. In a large nu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/38
CPCC23C18/1637C23C18/1689C23C18/1692C23C18/38
Inventor 于思荣吕哲馨刘恩洋赵严周雪刘迪熊伟
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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