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Method for performing electrodeposition on Al-Pt alloys in imidazole-type ionic liquid

An ionic liquid and electrodeposition technology, applied in the field of electrodeposition, can solve the problems of long process flow, high cost and complexity, and achieve the effects of reducing environmental pollution, easy operation and reducing energy consumption

Active Publication Date: 2018-07-06
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of this method is longer and more complicated, and the cost is higher

Method used

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  • Method for performing electrodeposition on Al-Pt alloys in imidazole-type ionic liquid
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  • Method for performing electrodeposition on Al-Pt alloys in imidazole-type ionic liquid

Examples

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Embodiment 2

[0042] A method for electrodepositing Al-Pt alloys in an imidazole type ionic liquid, its concrete steps are as follows:

[0043] Step 1, prepare imidazole type ionic liquid

[0044] (1) Under argon protection, in molar ratio, 1-octadecyl-3-methyl imidazole chloride: anhydrous aluminum chloride=5: 1, imidazole chloride and anhydrous aluminum chloride are mixed, Obtain a transparent ionic liquid by uniform stirring;

[0045] (2) in the transparent ionic liquid, add platinum dichloride, make the mass concentration of platinum dichloride in the transparent ionic liquid be 8% after stirring and dissolving, get imidazole type electrolyte;

[0046] Step 2, electrodeposition of Al-Pt alloy:

[0047] Pretreatment of nickel sheet: including grinding, polishing and ultrasonic cleaning process; wherein, ultrasonic cleaning is carried out in dilute sulfuric acid with a mass concentration of 7%, and the cleaning time is 10 minutes;

[0048] Using a three-electrode system, nickel sheet i...

Embodiment 3

[0051] A method for electrodepositing Al-Pt alloys in an imidazole type ionic liquid, its concrete steps are as follows:

[0052] Step 1, prepare imidazole type ionic liquid

[0053](1) Under argon protection, in molar ratio, 1-decyl-3-methyl imidazole chloride: anhydrous aluminum chloride=2.5: 1, mix imidazole chloride and anhydrous aluminum chloride, pass through Stir and mix to obtain a transparent ionic liquid;

[0054] (2) in the transparent ionic liquid, add platinum dichloride, make the mass concentration of platinum dichloride in the transparent ionic liquid be 3% after stirring and dissolving, get imidazole type electrolyte;

[0055] Step 2, electrodeposition of Al-Pt alloy:

[0056] For 304 stainless steel sheets, pretreatment: including grinding, polishing and ultrasonic cleaning processes; wherein, ultrasonic cleaning is carried out in dilute sulfuric acid with a mass concentration of 5%, and the cleaning time is 20 minutes;

[0057] Using a three-electrode syst...

Embodiment 4

[0060] A method for electrodepositing Al-Pt alloys in an imidazole type ionic liquid, its concrete steps are as follows:

[0061] Step 1, prepare imidazole type ionic liquid

[0062] (1) Under argon protection, in molar ratio, 1-pentyl-3-methyl imidazole chloride: anhydrous aluminum chloride=2: 1, mix imidazole chloride and anhydrous aluminum chloride, pass through Stir and mix to obtain a transparent ionic liquid;

[0063] (2) in the transparent ionic liquid, add platinum dichloride, make the mass concentration of platinum dichloride in the transparent ionic liquid be 6% after stirring and dissolving, get imidazole type electrolyte;

[0064] Step 2, electrodeposition of Al-Pt alloy:

[0065] Carry out pretreatment on the substrate copper sheet: including grinding, polishing and ultrasonic cleaning processes; wherein, ultrasonic cleaning is carried out in dilute sulfuric acid with a mass concentration of 3%, and the cleaning time is 25 minutes;

[0066] A three-electrode sy...

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Abstract

The invention discloses a method for performing electrodeposition on Al-Pt alloys in imidazole-type ionic liquid. The method comprises the following steps: 1) preparing the imidazole-type ionic liquid: mixing imidazolium chloride with anhydrous aluminium chloride under protection of inert gas or nitrogen to obtain transparent ionic liquid; adding platinum dichloride to obtain imidazole type electrolyte; 2) by adopting a three-electrode system, performing electrodeposition on the Al-Pt alloys; performing constant potential electrodeposition in the imidazole type electrolyte by using a matrix metal plate as a working electrode, an inert material as a counter-electrode and a Pt wire as a reference electrode, and preparing the Al-Pt alloys on the matrix metal plate. According to the method disclosed by the invention, the Al-Pt alloys with controlled compositions, structures and features are prepared; and moreover, the method disclosed by the invention has the advantages of short process, low cost, simpleness and convenience in operation, energy conservation and environmental protection.

Description

technical field [0001] The invention relates to an electrodeposition method, in particular to a method for electrodepositing an Al-Pt alloy in an imidazole-type ionic liquid. Background technique [0002] Aluminum-platinum coating has excellent high-temperature oxidation resistance, which can further increase the heat-resistant temperature of superalloys by 300-400 ° C. It is often used as an anti-oxidation coating or a bonding layer of thermal barrier coatings in aerospace, ships, and energy. and power vehicles. At present, the preparation method of aluminum-platinum coating is mainly divided into four steps: first, a pure Pt layer with a thickness of 5-10 μm is electroplated on the metal substrate; second, the diffusion heat treatment of the sample under vacuum is generally called pre-diffusion, here During the process, a certain amount of interdiffusion between the Pt layer and the substrate will occur; the third step is to infiltrate the aluminum layer on the surface of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56
CPCC25D3/56C25D3/567
Inventor 刘风国孔珊珊高炳亮陶文举杨酉坚王兆文石忠宁胡宪伟
Owner NORTHEASTERN UNIV
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