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Method for preparing aluminum film through electrodeposition of ionic liquid on the surface of aluminum-based composite material

An aluminum-based composite material, ionic liquid technology, applied in the field of composite materials, can solve the problems of destroying the integrity and uniformity of the film, poor corrosion resistance, etc., and achieve the effects of controllable thickness, good temperature resistance and strong adaptability

Active Publication Date: 2011-10-05
ALUMICS MATERIALS INSTIUTUTE ANHUI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After searching the literature of the prior art, it was found that He Chunlin et al. wrote an article "SiC P / 2024Al Aluminum Matrix Composites and Corrosion Behaviors of their Anodized Films", this paper adopts sulfuric acid anodic oxidation on SiC P The aluminum oxide film with certain corrosion resistance was prepared on the surface of the / 2024Al composite material, but its corrosion resistance was not as good as that of the anodized film of the 2024Al alloy. sex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1) The aluminum matrix composite material and pure aluminum are respectively polished and polished by 400#, 800#, 1200#, 2000# sandpaper.

[0016] 2) The ionic liquid (electrodeposition liquid) is configured in a vacuum glove box full of argon, and its components and their molar ratios are: the molar ratio of benzyltrimethylammonium chloride to anhydrous aluminum trichloride and additives is 1:2.1:0.3. In the process of configuring the ionic liquid, anhydrous aluminum trichloride is slowly added to benzyltrimethylammonium chloride under the condition of magnetic stirring until the reaction is completed (control temperature does not exceed 50°C), and the speed of magnetic stirring is 600r / min.

[0017] 3) In the ionic liquid, the aluminum matrix composite material is used as the anode, and the pure aluminum is used as the cathode, at 0.2A / dm 2 Electrochemical activation (operated in a glove box) was performed at a current density of 2 min, the reaction time was 2 min,...

Embodiment 2

[0021] 1) The aluminum matrix composite material and pure aluminum are respectively polished and polished by 400#, 800#, 1200#, 2000# sandpaper.

[0022] 2) The ionic liquid (electrodeposition liquid) is configured in a vacuum glove box full of argon, and its components and their molar ratios are: the molar ratio of N-butylpyridinium chloride to anhydrous aluminum trichloride and additives is 1:1.8:0.2. In the process of configuring the ionic liquid, anhydrous aluminum trichloride is slowly added to N-butylpyridinium chloride under the condition of magnetic stirring until the reaction is completed (control temperature does not exceed 50 ° C), and the speed of magnetic stirring is 750r / min.

[0023] 3) In the ionic liquid, the aluminum-based composite material is used as the anode, and the pure aluminum is used as the cathode, at 0.4A / dm 2 Electrochemical activation (operated in a glove box) was carried out at a current density of 5 min, the reaction time was 5 min, and the ...

Embodiment 3

[0027] 1) The aluminum matrix composite material and pure aluminum are respectively polished and polished by 400#, 800#, 1200#, 2000# sandpaper.

[0028] 2) The ionic liquid (electrodeposition liquid) is configured in a vacuum glove box filled with argon, and its components and their molar ratios are: 1-butyl-3-methylimidazolium chloride salt and anhydrous aluminum trichloride, additives The molar ratio is 1:2:0.1. In the process of configuring the ionic liquid, anhydrous aluminum trichloride is slowly added to 1-butyl-3-methylimidazolium chloride salt under the condition of magnetic stirring until the reaction is completed (control temperature does not exceed 50 ° C), magnetic stirring The speed is 900r / min.

[0029] 3) In the ionic liquid, the aluminum-based composite material is used as the anode, and the pure aluminum is used as the cathode, at 0.5A / dm 2 Electrochemical activation (operated in a glove box) was carried out at a current density of 1000°C, the reaction time...

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Abstract

The invention discloses a method for preparing an aluminum film through electrodeposition of ionic liquid on the surface of an aluminum-based composite material. The method comprises the following steps of: preparing electrodeposition liquid from quaternary ammonium salts, pyridininium salts, anhydrous aluminum chloride, and an additive; and performing electrochemical activation under the protection of argon, and performing direct current electrodeposition in the electrodeposition liquid by taking the aluminum-based composite material as a cathode and pure aluminum as an anode to obtain the aluminum film on the surface of the composite material. By the method, the corrosion resistance of the surface of the composite material is improved, and the corrosion resistance of the electrodeposited aluminum film on the composite material is not lower than that of the electrodeposited aluminum film on a matrix alloy.

Description

technical field [0001] The invention relates to a surface coating in the technical field of composite materials and its preparation, in particular to a preparation method of an ionic liquid electrodeposited aluminum film on the surface of an aluminum-based composite material. Background technique [0002] in situ endogenous TiB 2 The particles have the advantages of good electrical conductivity, low density, high hardness, high melting point and good interfacial wettability, so that the in situ endogenous TiB 2 Particle-reinforced aluminum matrix composites have many excellent properties such as specific strength, high specific stiffness, good wear resistance, and high elastic modulus, so they have broad application prospects in various fields. But since TiB 2 The presence of particles causes the corrosion resistance of the composite material to be much lower than that of the matrix alloy, which severely limits the application of the material in some environments with hars...

Claims

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Application Information

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IPC IPC(8): C25D3/44
Inventor 黄文貌马乃恒王浩伟刘预周聪
Owner ALUMICS MATERIALS INSTIUTUTE ANHUI CO LTD
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