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Method for co-depositing Al-Mn alloy plating layer in ionic liquid system

A technology of ionic liquid and alloy coating, applied in the field of electroplating, can solve the problems of sensitivity, limited application, unstable properties of ionic liquid, etc., and achieve the effects of low heat energy, reduced defective rate, and low production cost

Active Publication Date: 2012-02-01
淄博鸿润新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to AlCl 3 Type ionic liquids are unstable and sensitive to water, and need to be prepared and used under vacuum or inert atmosphere, which limits their application

Method used

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  • Method for co-depositing Al-Mn alloy plating layer in ionic liquid system
  • Method for co-depositing Al-Mn alloy plating layer in ionic liquid system
  • Method for co-depositing Al-Mn alloy plating layer in ionic liquid system

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Take Nd 2 (SO 4 ) 3 +MnSO 4 +Al 2 o 3 +[EMIM]HSO 4 It is an electrolyte system, with Fe plate as the cathode, 99wt% aluminum plate as the anode, the electrolysis temperature is controlled at 100°C, the pole distance is 2cm, and the current density is controlled at 60mA / cm 2 , The tank voltage is controlled at 2V. First add 114.6gAl 2 o 3 and 28.6L [EMIM]HSO 4 , then add 2.64gMnSO 4 and 0.265gNd 2 (SO 4 ) 3 After dissolving for 10 minutes, insert the cathode and anode for electroplating, and the electroplating time is 60 minutes.

Embodiment 2

[0025] to Ce 2 (SO 4 ) 3 +MnSO 4 +Al 2 o 3 +[EMIM]HSO 4 It is an electrolyte system, with steel plate as the cathode and 99wt% aluminum plate as the anode, the electrolysis temperature is controlled at 100°C, the pole distance is 2cm, and the current density is controlled at 60mA / cm 2 , The tank voltage is controlled at 2V. First add 114.6g Al 2 o 3 and 28.6L [EMIM]HSO 4 , then add 2.64gMnSO 4 and 0.262gCe 2 (SO 4 ) 3 After dissolving for 10 minutes, insert the cathode and anode for electroplating, and the electroplating time is 60 minutes.

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Abstract

The invention relates to an electroplating method, in particular to a method for co-depositing an Al-Mn alloy plating layer in an ionic liquid system. The method has the characteristics in that: a metal material is taken as a cathode and a pure aluminum material with the purity of more than 99 wt% is taken as an anode; a mixture of MnSO4, R3(SO4)3 and Al2O3 is added into an electrolytic cell, themixture is fused with [EMIM]HSO4 ionic liquid, and then the fused mixture is used as an electrolyte to carry out electrolysis. The method provided by the invention has the advantages that: the [EMIM]HSO4 ionic liquid is adopted as the electrolyte so that aluminum ions and manganese ions are electrolyzed and co-deposited on a cathode material to generate a uniform and dense Al-Mn alloy plating layer; the heat energy needed by generating the plating layer is low (the step of plating can be carried out at a temperature of 100 DEG C), the oxidization loss of an alloy metal is small, a zero-pollution emission is realized and the production cost is low, so that the method accords with a development tendency of the modern industrial production.

Description

technical field [0001] The invention relates to an electroplating method, in particular to a method for co-depositing an Al-Mn alloy coating in an ionic liquid system. Background technique [0002] Since the invention of electrodepositing cryolite-alumina melt to prepare aluminum, it is still the process of producing aluminum. By continuously improving the electrolyte composition and feeding methods, the current efficiency has reached more than 90%, and the power consumption is getting lower and lower. After more than 100 years of development, this method has been quite mature, but there are still problems such as high electrolysis temperature, huge energy consumption, and serious pollution. It is urgent to develop a new process with a milder electrolysis temperature and higher energy utilization efficiency. At present, it is developing in the direction of low temperature, energy saving and raw material saving electrodeposition. In 2005, the world's aluminum output ranked ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/66
Inventor 张丽鹏甄美静梁寒冰于先进张晖耿加强于兵吴云霞谷城张明明韩涛冯旭高新
Owner 淄博鸿润新材料有限公司
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