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Method for extracting intermetallic compound Mg2Si or Al8Mn5 from magnesium alloy

A technology of intermetallic compounds and magnesium alloys, which is applied in the field of extracting intermetallic compounds from magnesium alloys, can solve problems such as growth mechanism constraints, achieve the effects of facilitating the reaction process, improving the alloy structure, and avoiding explosions

Inactive Publication Date: 2009-09-30
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to this study the complete three-dimensional shape of Mg cannot be obtained from the alloy 2 Si, so in-depth study of Mg in the alloy 2 The growth mechanism of Si is largely constrained

Method used

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  • Method for extracting intermetallic compound Mg2Si or Al8Mn5 from magnesium alloy
  • Method for extracting intermetallic compound Mg2Si or Al8Mn5 from magnesium alloy
  • Method for extracting intermetallic compound Mg2Si or Al8Mn5 from magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Extraction of Mg from Mg-8Zn-4Al-0.3Mn-1Si-0.05%AlP magnesium alloy 2 Si

[0025] 1. Configure solvent: configure HNO with a concentration of 40vol.% 3 Alcohol solution as extraction solvent;

[0026] 2. Reactive extraction: Remove the surface oxide skin of the magnesium alloy material and cut it into thin slices with a thickness of 3mm and a length and width of 8mm. Put the magnesium alloy material into the prepared extraction according to the volume ratio of material:solvent=1:300 Solvent, reaction extraction in an open glass reaction vessel at room temperature;

[0027] 3. Cleaning: When it is observed that the magnesium alloy material is completely dissolved in the extraction solvent, the reaction is over, and the exposed glass reaction vessel containing the extraction solvent is cleaned in ultrasonic waves for 10 minutes;

[0028] 4. Filtration and drying: filter the extract with filter paper, rinse the reaction vessel with distilled water and filter th...

Embodiment 2

[0029] Embodiment 2: Extract Al from Mg-8Al-0.7Mn-0.5Zn magnesium alloy 8 mn 5

[0030] 1. Configure solvent: configure HNO with a concentration of 30vol.%. 3 Alcohol solution as extraction solvent;

[0031] 2. Reactive extraction: Remove the surface oxide skin of the magnesium alloy material and cut it into thin slices with a thickness of 1mm and a length and width of 9mm. Put the magnesium alloy material into the prepared extraction according to the volume ratio of material:solvent=1:100 Solvent, reaction extraction in a transparent open glass reaction vessel at room temperature;

[0032] 3. Cleaning: When it is observed that all the materials are dissolved in the extraction solvent, the reaction is over, and the transparent open glass reaction vessel containing the extraction solvent is cleaned in ultrasonic for 30 minutes;

[0033] 4. Filtration and drying: filter the extract with filter paper, rinse the reaction vessel with alcohol and filter the rinse with filter pap...

Embodiment 3

[0034] Embodiment 3: Extract Mg from Mg-6Al-0.5Mn-1.8Si-Ca alloy-0.2Zn magnesium alloy 2 Si

[0035] 1. Configure solvent: configure HNO with a concentration of 45vol.%. 3 Alcohol solution as extraction solvent;

[0036] 2. Reactive extraction: Remove the surface oxide skin of the magnesium alloy material and cut it into thin slices with a thickness of 5mm and a length and width of 10mm. Put the magnesium alloy material into the prepared extraction according to the volume ratio of material:solvent=1:200 Solvent, reaction extraction in an open glass reaction vessel at room temperature;

[0037] 3. Cleaning: When it is observed that all the materials are dissolved in the extraction solvent, the reaction is over, and the open glass reaction vessel containing the extraction solvent is cleaned in ultrasonic waves for 20 minutes;

[0038] 4. Filtration and drying: filter the extract with filter paper, rinse the reaction vessel with distilled water and filter the rinse with filter...

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Abstract

The invention discloses a method for extracting intermetallic compound Mg2Si or Al8Mn5 from magnesium alloy: the magnesium alloy material is cut into thin slices after removing the surface oxide skin and put into the HNO3 alcohol solution with a concentration of 25vol.%~45vol.%. Reaction and extraction in an open glass reaction vessel at room temperature. After the reaction is completed, it is cleaned in an ultrasonic wave, and then filtered and dried. The invention can obtain three-dimensional Mg2Si or Al8Mn5 phases in different forms, which is convenient for visually observing and analyzing the morphology characteristics and growth laws of Mg2Si or Al8Mn5 phases, and is conducive to in-depth and perfect research on the growth mechanism of Mg2Si or Al8Mn5 phases, so as to achieve control of Mg2Si or Al8Mn5 phases. The growth of the Al8Mn5 phase, the purpose of improving the alloy structure; at the same time, it provides a new indirect and effective method for the preparation of the intermetallic compound Mg2Si or Al8Mn5.

Description

Technical field: [0001] The invention relates to a method for extracting compounds in alloys, in particular to a method for extracting intermetallic compounds from magnesium alloys. Background technique: [0002] Mg 2 Si is the only compound in the Mg-Si binary alloy system. It is formed in situ in the magnesium alloy. It not only has good thermoelectric properties, but also has a high melting point (1085 ° C), high hardness (460HV 0.3 ), high elastic modulus and other excellent mechanical properties, because of its low density (1.9g / cm 3 ), small coefficient of thermal expansion (7.5×10 -6 K -1 ), and the raw material resources of elements Si and Mg are abundant, the formation reserves are large, and the price is low, so Mg 2 Si becomes the preferred reinforcement of Mg-based and Al-based composites for the fabrication of ultra-light alloys or metal-based composites with special properties. The study found that although Mg 2 Si is such an excellent second-phase reinfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/40
Inventor 张春香王利国关绍康朱世杰陈培磊任晨星谢银德
Owner ZHENGZHOU UNIV