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Preparation method for magnalium

A magnesium-aluminum alloy and magnesium salt technology, which is applied in the electrolysis process and electrolytic components, etc., can solve the problems of inability to effectively control the composition of magnesium-aluminum alloy and to realize the co-deposition of magnesium-aluminum alloy.

Inactive Publication Date: 2017-04-26
CHINA ENFI ENGINEERING CORPORATION
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  • Description
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Problems solved by technology

[0008] The main purpose of the present invention is to provide a method for preparing magnesium-aluminum alloys to solve the problems in the prior art that the electrolytic co-deposition method cannot realize magnesium-aluminum co-deposition and cannot effectively control the composition of magnesium and aluminum alloys

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  • Preparation method for magnalium
  • Preparation method for magnalium

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preparation example Construction

[0029] In order to solve this problem, the present invention provides a method for preparing magnesium-aluminum alloy, which includes the following steps: configuring the mixed raw materials of magnesium salt and aluminum salt according to the mass ratio of magnesium and aluminum in the magnesium-aluminum alloy to be prepared; The mixed raw materials are subjected to molten salt electrolytic co-deposition, during which the relative error between the Faraday electric quantity required for controlling the discharge of magnesium ions and aluminum ions in the mixed raw materials and the electrolytic electric quantity for electrolyzing the mixed raw materials is within ±15%, to obtain magnesium and aluminum alloys.

[0030] Using the above preparation method, through the molten salt electrolytic co-deposition method, the faraday electric quantity required to control the discharge of magnesium ions and aluminum ions during the electrolysis is consistent with the electrolytic electric ...

Embodiment 1

[0047] The alloy is designed as Mg-6wt%Al (the content of Al is 6wt%), and the mixture of magnesium chloride and aluminum chloride is configured according to this ratio.

[0048] The electrolysis time (interval time) is preset to 30 minutes, and the electrolysis current is DC power supply 2A;

[0049] by formula Calculate the mass of magnesium chloride in the mixed raw material, weigh a part of the above mixture as the mixed raw material, and periodically feed the mixed raw material into the electrolytic furnace for continuous molten salt electrolytic co-deposition.

[0050] The specific electrolytic parameters are as follows:

[0051] Electrolytic cathode is stainless steel, anode is graphite; DC power supply: 2A; electrolyte temperature 900°C; cathode current density 1A / cm 2 ; Electrolyte composition: magnesium chloride 15wt% - lithium chloride 60wt% - sodium chloride 25wt%. The feeding cycle of mixed raw materials is 30min.

[0052] Under the above process parameters, ...

Embodiment 2

[0056] The alloy is designed as Mg-6wt%Al (the content of Al is 6wt%), and the mixture of magnesium chloride and aluminum chloride is configured according to this ratio.

[0057] The electrolysis time (interval time) is preset to 30 minutes, and the electrolysis current is DC power supply 2A;

[0058] by formula Calculate the mass of magnesium chloride in the mixed raw material, weigh a part of the above mixture as the mixed raw material, and periodically feed the mixed raw material into the electrolytic furnace for continuous molten salt electrolytic co-deposition.

[0059] The specific electrolytic parameters are as follows:

[0060] Electrolysis cathode is molybdenum, anode is graphite; DC power supply: 2A; electrolyte temperature 700°C; cathode current density 0.5A / cm 2 ; Electrolyte composition: magnesium chloride 8wt% - lithium chloride 70wt% - sodium chloride 22wt%. The feeding cycle of mixed raw materials is 30min. Under the above process parameters, after continu...

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Abstract

The invention provides a preparation method for magnalium. The method comprises the following steps that a magnesium salt and aluminum salt mixed raw material is prepared according to the mass ratio of magnesium to aluminum in the magnalium to be prepared; and the mixed raw material is subjected to molten salt electrolysis codeposition, the relative error between the faraday electric quantity required for discharging of magnesium ions and aluminum ions in the mixed raw material and the electrolysis electric quantity for electrolysis of the mixed raw material during molten salt electrolysis codeposition is controlled at + / -15%, and the magnalium is obtained. Through the preparation method and the molten salt electrolysis codeposition mode, the matching consistency between the faraday electric quantity required for discharging of the magnesium ions and the aluminum ions and the electrolysis electric quantity during electrolysis is controlled, the relative error between the faraday electric quantity and the electrolysis electric quantity is controlled to be within at + / -15%, the contents of the two metallic components in the magnalium product are consistent with target contents, and accordingly the components of the magnalium are effectively controlled. Furthermore, the magnalium is prepared through the preparation method.

Description

technical field [0001] The invention relates to the technical field of alloy material preparation, in particular to a method for preparing magnesium and aluminum alloys. Background technique [0002] Magnesium alloy has many excellent properties such as low density, excellent mechanical and chemical properties, and can be recycled, so it is called "green alloy". Magnesium alloys are widely used in various fields such as the automobile industry, electronic products, aviation, and military affairs, and their usage tends to increase significantly. Magnesium-based aluminum alloy is one of the magnesium alloy series. [0003] The traditional method of producing such alloys is the smelting method, that is, the co-blending method: after various alloying elements are obtained through their own independent metallurgical processes, they are smelted to obtain alloys. This method has a long process, and all metal elements in it must be obtained through their respective metallurgical p...

Claims

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Application Information

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IPC IPC(8): C25C3/36C25C7/06
CPCC25C3/36C25C7/06
Inventor 孙宁磊王玮玮杜尚超王魁珽刘国
Owner CHINA ENFI ENGINEERING CORPORATION
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