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Method for preparing nanometer aluminum or nanometer aluminum coating in low-temperature electro-deposition form by using ion liquid/additive system

A nano-aluminum coating and ionic liquid technology, which is applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of low reaction temperature, high cost, low energy consumption, etc., and achieve low material requirements , low cost, low energy consumption

Active Publication Date: 2013-01-23
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of high cost and low output of the existing nano-aluminum preparation method, and provide a method for preparing nano-aluminum by low-temperature electrodeposition of an ionic liquid / additive system. This method has low reaction temperature and low energy consumption, and the obtained nano-aluminum Aluminum quality is good, current efficiency is high, the size of nano-aluminum can be better controlled, and the cost can be reduced

Method used

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  • Method for preparing nanometer aluminum or nanometer aluminum coating in low-temperature electro-deposition form by using ion liquid/additive system

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The ionic liquid 1-butyl-3-methylimidazole chloride was vacuum-dried at 50°C for 24 hours, and in the glove box, under the protection of inert gas argon, the 1-butyl-3-methylimidazole chloride was filled with imidazole and a jacketed electrolytic cell with a thermometer installed on a magnetic stirrer to keep the temperature constant, and gradually add anhydrous aluminum trichloride to the electrolyte to change the composition of the system until aluminum trichloride and 1-butyl chloride - The molar ratio of 3-methylimidazole is 2:1. After reaching thermal equilibrium and mixing uniformly, stir at 50°C for 2 to 3 hours. Add lanthanum chloride and cyclohexane with a mass fraction of 0.1% of the ionic liquid and a molar ratio of 1:1, and continue stirring to ensure that the electrolyte is evenly mixed to obtain an ionic liquid / additive electrolyte system. After polishing and polishing the copper sheet of the base electrode with sandpaper, it is used as a deposition cathod...

Embodiment 2

[0026] The ionic liquid 1-ethyl-3-methylimidazole chloride was vacuum-dried at 50°C for 24 hours. In the glove box, under the protection of inert gas argon, the 1-ethyl-3-methylimidazole chloride was filled with imidazole and a jacketed electrolytic cell equipped with a thermometer is placed on a magnetic stirrer to keep the temperature constant, and anhydrous aluminum trichloride is gradually added to the electrolyte to change the system composition until aluminum trichloride and 1-ethyl chloride - The molar ratio of 3-methylimidazole is 1.1:1. After reaching thermal equilibrium and mixing uniformly, stir at 50°C for 2 to 3 hours. Lithium chloride with a mass fraction of 0.01% of the ionic liquid is added, and stirring is continued to ensure that the electrolyte is evenly mixed to obtain an ionic liquid / additive electrolyte system. After the base electrode stainless steel is polished with sandpaper, it is degreased, acid soaked, washed with water, acetone ultrasonically clean...

Embodiment 3

[0028]The ionic liquid 1-propyl-3-methylimidazole chloride was vacuum-dried at 50°C for 24 hours. In the glove box, under the protection of inert gas argon, the 1-propyl-3-methylimidazole chloride was filled with imidazole and a jacketed electrolytic cell with a thermometer installed on a magnetic stirrer, keeping the temperature constant, adding anhydrous aluminum trichloride to the electrolyte solution to change the system composition until aluminum trichloride and 1-propyl chloride - The molar ratio of 3-methylimidazole is 3:1. After reaching thermal equilibrium and mixing uniformly, stir at 50°C for 2 to 3 hours. Add benzene with a mass fraction of 10% of the ionic liquid, and continue stirring to ensure that the electrolyte is evenly mixed to obtain an ionic liquid / additive electrolyte system. After the base electrode low-carbon steel is polished with sandpaper, it is degreased, acid soaked, washed with water, acetone ultrasonically cleaned, and dried as the deposition ca...

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Abstract

The invention designs a method for preparing nanometer aluminum or nanometer aluminum coating in an electro-deposition form by using an ion liquid / additive system. The method is characterized in that: ion liquid and anhydrous aluminum trichloride are mixed into a low-temperature electrolyte and suitable additives are added for preparing the ion liquid / additive system. A processed substrate is taken as a deposition cathode; the direct current electro-deposition is adopted for preparing the nanometer aluminum or nanometer aluminum coating; and the size of the aluminum grains is adjusted according to requirements. According to the method, the problems of high cost and small output of the present technology for producing the nanometer aluminum are solved; the adopted ion liquid is conventional ion liquid and is characterized by wide source, low cost, high conductivity, wide electrochemical window and being non-volatile and environment-friendly; the suitable additives are used, so that the high-quality nanometer aluminum or nanometer aluminum coating obtained in the conventional ion liquid is realized; the obtained aluminum deposited coating is compact, smooth and flat; a nanometer material can be obtained by using the ion liquid / additive system at lower temperature; the reaction is easy to control; the energy consumption is low; the obtained nanometer aluminum is high in quality and high in current efficiency; the size of the nanometer aluminum can be effectively controlled by adjusting the dosage and formula of the additives; the process is simple; the cost is low; and the application prospect is better.

Description

technical field [0001] The invention relates to a method for preparing nano-aluminum or nano-aluminum coating by electrodeposition of an ionic liquid / additive system. It belongs to the field of nonferrous metallurgy. Background technique [0002] The content of aluminum in the earth's crust is second only to oxygen and silicon, ranking third, and is the most abundant metal element in the earth's crust. Aluminum is the second largest metal material next to steel, accounting for half of the total output of ferrous metals. It has excellent physical and chemical properties and is extremely versatile. The correlation with the national economy is as high as 91%. It is a must for national economic development and national defense construction. Indispensable and important basic raw materials. [0003] In daily life, various aluminum products have been widely used by people. As a new type of material, nano-aluminum has three main application fields, including rocket propellant, ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/44C25D5/20B82Y40/00B82Y30/00
Inventor 吕兴梅刘恋张锁江张香平郑勇张亲亲
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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