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A method and product for extracting al-ce tubular intermetallic compound from magnesium alloy

A technology of intermetallic compounds and magnesium alloys, which is applied in the field of extraction of Al-Ce tubular intermetallic compounds, can solve the problems of low superconducting transition temperature, complex cooling equipment, inability to guarantee the morphology and purity of intermetallic compounds, and achieve extraction rate High and quick response effect

Active Publication Date: 2021-04-02
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

③ As a superconducting material, the main problem that limits the wide application of superconducting materials is that the superconducting transition temperature is too low, and the additional cooling equipment is complicated, while intermetallic compounds greatly increase the critical temperature of superconducting, which opens up new opportunities for the application of superconducting materials. broad prospects
[0004] The preparation methods of intermetallic compounds mainly include: melt growth method, solid state reaction synthesis method (mechanical alloying method, powder metallurgy method, self-propagating high temperature synthesis method), deposition method (CVD or PVD), traditional melting method (induction furnace smelting, resistance furnace smelting), spark plasma sintering (SPS), etc. Among them, the traditional smelting method is the most commonly used method for preparing intermetallic compounds, but after the intermetallic compounds are prepared by this method, extraction is required to finally obtain intermetallic compounds. However, most of the current extraction methods cannot guarantee the morphology and purity of intermetallic compounds. Therefore, there is an urgent need for an extraction method for intermetallic compounds that can not only ensure the morphology of intermetallic compounds, but also ensure their purity.

Method used

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  • A method and product for extracting al-ce tubular intermetallic compound from magnesium alloy
  • A method and product for extracting al-ce tubular intermetallic compound from magnesium alloy
  • A method and product for extracting al-ce tubular intermetallic compound from magnesium alloy

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Effect test

Embodiment 1

[0037] Extraction of Al-Ce Tubular Intermetallic Compounds

[0038] (1) Prepare a magnesium alloy containing Al-Ce tubular intermetallic compound, the magnesium alloy is composed of the following components in terms of mass percentage: Al: 7.9%, Zn: 0.6%, Mn: 0.5%, Sn: 2.0%, Ce: 2.0%, unavoidable impurities ≤ 0.1%, the balance is magnesium, the preparation method is as follows:

[0039] Using pure magnesium ingots, pure aluminum ingots, pure zinc ingots, pure tin ingots, Mg-5%Mn master alloys and Mg-20%Ce master alloys as raw materials, according to the above-mentioned composition of magnesium alloys containing Al-Ce tubular intermetallic compounds Calculate the batching by mass percentage, turn on the smelting furnace, and when the temperature of the furnace reaches 370°C, pass the protective gas (CO 2 +0.5% SF 6 ), then add pure magnesium ingots, pure aluminum ingots, Mg-Mn master alloys and Mg-Ce master alloys preheated to 150°C into the melting furnace, and heat up to 68...

Embodiment 2

[0045] Extraction of Al-Ce Tubular Intermetallic Compounds

[0046] (1) Prepare a magnesium alloy containing Al-Ce tubular intermetallic compound, the magnesium alloy is composed of the following components in terms of mass percentage: Al: 8.5%, Zn: 0.2%, Mn: 0.3%, Sn: 2.0%, Ce: 2.0%, unavoidable impurities ≤ 0.1%, the balance is magnesium, the preparation method is as follows:

[0047] Using pure magnesium ingots, pure aluminum ingots, pure zinc ingots, pure tin ingots, Mg-5%Mn master alloys and Mg-20%Ce master alloys as raw materials, according to the above-mentioned composition of magnesium alloys containing Al-Ce tubular intermetallic compounds Calculate the batching by mass percentage, turn on the melting furnace, and when the temperature of the furnace reaches 350°C, pass the protective gas (CO 2 +0.5% SF 6 ), then add pure magnesium ingots, pure aluminum ingots, Mg-Mn master alloys and Mg-Ce master alloys preheated to 155°C into the melting furnace, and heat up to 675...

Embodiment 3

[0053] Extraction of Al-Ce Tubular Intermetallic Compounds

[0054] (1) Prepare a magnesium alloy containing Al-Ce tubular intermetallic compound, which is composed of the following components in terms of mass percentage: Al: 9.2%, Zn: 0.8%, Mn: 0.15%, Sn: 2.0%, Ce: 2.0%, unavoidable impurities ≤ 0.1%, the balance is magnesium, the preparation method is as follows:

[0055] Using pure magnesium ingots, pure aluminum ingots, pure zinc ingots, pure tin ingots, Mg-5%Mn master alloys and Mg-20%Ce master alloys as raw materials, according to the above-mentioned composition of magnesium alloys containing Al-Ce tubular intermetallic compounds Calculate the batching by mass percentage, turn on the smelting furnace, and when the temperature of the furnace reaches 400°C, pass the protective gas (CO 2 +0.5% SF 6 ), then add pure magnesium ingots, pure aluminum ingots, Mg-Mn master alloys and Mg-Ce master alloys preheated to 145°C into the melting furnace, and heat up to 685°C until pur...

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Abstract

The invention relates to a method for extracting Al-Ce tubular intermetallic compound from magnesium alloy and a product, and belongs to the technical field of compound extraction in alloys. In the method, perchloric acid and acetic acid are taken as raw materials for preparing an extraction liquid, magnesium alloy containing Al-Ce tubular intermetallic compound is dissolved in the extraction liquid, then in the later period, centrifugation, washing and drying are performed, and the Al-Ce tubular intermetallic compound is prepared. According to the method, the extraction rate is high, the sound tubular morphology of the finally extracted Al-Ce tubular intermetallic compound is guaranteed, and the method is simple and easy to operate, low in cost and suitable for expanded production.

Description

technical field [0001] The invention belongs to the technical field of compound extraction in alloys, and in particular relates to a method and a product for extracting Al-Ce tubular intermetallic compounds from magnesium alloys. Background technique [0002] An intermetallic compound is a combination of two or more metal atoms in a certain proportion to form an alloy composition that is different from the original two crystal lattices. Intermetallic compounds are different from ordinary compounds in that their composition can vary within a certain range, and the valences of the constituent elements are difficult to determine, but have significant metal bonding bonds. Its chemical composition usually meets A m B n form, in metallic functional materials, there are RCo 5 (R is a rare earth metal)-based permanent magnet material, hydrogen storage material LaNi 5 , FeTi, magnetostrictive material TbFe 2 , shape memory material NiTi, semiconductor material GaAs, GaP, InSb, e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C3/00C22C23/02C22C1/03
CPCC22C1/026C22C1/03C22C3/005C22C23/02
Inventor 薛寒松李鹤张丁非白任杰周扬刘传璞王开
Owner CHONGQING UNIV
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