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Rapid solidification aluminum alloy material and preparation method thereof

An aluminum alloy material and aluminum alloy technology, applied in the field of rapid solidification aluminum alloy material and its preparation, can solve the problems of high quality, unfavorable sodium-sulfur battery assembly, handling, thermal conductivity and electrical conductivity need to be improved, stainless steel is expensive, etc., to achieve The effect of low price, easy processing and molding, high strength and thermal stability

Inactive Publication Date: 2014-07-16
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, stainless steel as a sulfur electrode collector also faces many problems: the price of stainless steel is relatively high, resulting in high costs, and its high quality is not conducive to large-scale assembly and handling of sodium-sulfur batteries
At the same time, as the current collector of the battery, the resistivity of thick stainless steel is still high at the working temperature of 300-350 ° C, and the thermal conductivity and electrical conductivity need to be improved.

Method used

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  • Rapid solidification aluminum alloy material and preparation method thereof
  • Rapid solidification aluminum alloy material and preparation method thereof
  • Rapid solidification aluminum alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Pure aluminum ingots with a purity of not less than 99.5wt%, pure iron rods, and blocky lanthanum-cerium mixed rare earths (see Table 1 for composition) are formulated into Al-20Fe and Al-10Re master alloys in appropriate mass percentages. 5 kg; use medium frequency induction furnace to melt Al-20Fe master alloy, and use well type crucible resistance furnace to melt Al-10Re master alloy. Then, according to the composition ratio of Al-8Fe-4Re, take an appropriate amount of pure aluminum ingots and Al-Fe master alloys and place them in an intermediate frequency induction furnace, and then add Al-Re master alloys after melting, and mix them evenly with electromagnetic stirring, and then pour and cool The as-cast Al-8Fe-4Re alloy was obtained by demolding, and the SEM image is as follows figure 2 shown. The alloy ingots obtained by smelting are broken, and the broken block alloys are placed in acetone solution and alcohol solution for ultrasonic cleaning, taken out and dr...

Embodiment 2

[0052] Prepare pure aluminum ingots with a purity of not less than 99.5wt%, pure iron rods, and blocky lanthanum-cerium mixed rare earths with appropriate mass percentages to prepare master alloys divided into Al-20Fe and Al-10Re, each weighing 5 kg; use intermediate frequency The Al-20Fe master alloy is smelted in an induction furnace, and the Al-10Re master alloy is smelted in a well-type crucible resistance furnace. Then according to the composition ratio of Al-8Fe-4Re, take an appropriate amount of Al-Fe master alloy and place it in a medium-frequency induction furnace. After melting, add Al-Re master alloy and mix it evenly with electromagnetic stirring. After that, cast it by pouring, cooling and demolding Al-8Fe-4Re alloy ingot. The alloy ingots obtained by smelting are broken, and the broken block alloys are placed in acetone solution and alcohol solution for ultrasonic cleaning, taken out and dried naturally; the cleaned block alloys are placed in a large-scale atomiz...

Embodiment 3

[0060] Pure aluminum ingots with a purity of not less than 99.5wt%, pure iron rods, and blocky lanthanum-cerium mixed rare earths are formulated with appropriate mass percentages into Al-20Fe and Al-10Re master alloys, each weighing 5 kg; using intermediate frequency induction The Al-20Fe master alloy is smelted in the furnace, and the Al-10Re master alloy is smelted in the well-type crucible resistance furnace. Then according to the composition ratio of Al-8Fe-4Re, take an appropriate amount of Al-Fe master alloy and place it in a medium-frequency induction furnace. After melting, add Al-Re master alloy and mix it evenly with electromagnetic stirring. After that, cast it by pouring, cooling and demolding Al-8Fe-4Re alloy ingot. The alloy ingots obtained by smelting are broken, and the broken block alloys are placed in acetone solution and alcohol solution for ultrasonic cleaning, taken out and dried naturally; the cleaned block alloys are placed in a large-scale atomized depo...

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Abstract

The invention relates to a rapid solidification aluminum alloy material and a preparation method thereof. The aluminum alloy material comprises 6-10wt% of iron, 2-6wt% of mischmetal and the balance of aluminium and inevitable impurities. The preparation method comprises the following steps: smelting to obtain Al-Fe intermediate alloy and Al-Re intermediate alloy; smelting pure aluminium ingots, the Al-Fe intermediate alloy and the Al-Re intermediate alloy, then pouring, cooling, demolding so as to obtain an aluminium alloy cast ingot comprising the 6-10wt% of iron and the 2-6w% of mischmetal; crushing and cleaning the alloy ingot; carrying out spray forming so as to prepare the aluminium alloy round ingot; carrying out hot-pressing densification on the aluminium alloy round ingot so as to obtain the densification spraying deposition aluminium alloy which is the rapid solidification aluminum alloy material. Compared with the prior art, the rapid solidification aluminum alloy material prepared by the method has relatively high strength and thermal stability and is mainly used for battery current collector materials and equipment used in high-temperature corrosion environments.

Description

technical field [0001] The invention relates to an aluminum alloy material and a preparation method thereof, in particular to a rapidly solidified aluminum alloy material and a preparation method thereof. Background technique [0002] Sodium-sulfur battery is a secondary battery with excellent performance. It has become one of the most promising static energy storage batteries. In recent years, its application in power systems including Japan, the United States, and Europe has developed rapidly. There are huge application prospects in active and reactive power support of power distribution system and multi-functional electric energy storage system. [0003] Although sodium-sulfur batteries have developed very rapidly in recent years, they also face many bottlenecks and technical difficulties, among which the selection of sulfur electrode containers is a very critical one. The corrosion of the sulfur electrode container of sodium-sulfur battery is one of the important factor...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/03B22F3/115
Inventor 陆伟黄平凌敏贾敏雷浩严彪
Owner TONGJI UNIV
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