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A kind of preparation method of magnesium-based graphene composite material

A composite material and graphene technology, applied in the field of metal matrix composite materials, can solve problems such as poor lubricity, poor interface bonding, uneven dispersion of graphene and magnesium alloys, etc., to reduce casting defects, refine grains, and be simple and easy Realize the effect of the preparation process

Active Publication Date: 2018-06-19
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of uneven dispersion, poor lubricity, and poor interface bonding between graphene and magnesium alloys, and to provide a preparation method for magnesium-based graphene composite materials. The method adopts a simple and easy-to-realize preparation method technology, low production cost, wide range of material preparation, safety and environmental protection, has a wide range of application and promotion prospects

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  • A kind of preparation method of magnesium-based graphene composite material
  • A kind of preparation method of magnesium-based graphene composite material

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Effect test

Embodiment 1

[0032] A kind of preparation method of magnesium-based graphene composite material, carries out according to the following steps:

[0033] (1) Get 200mg graphene powder and join in 300ml dehydrated ethanol solution, through ultrasonic treatment of 400W, 40min, make the graphene ethanol solution that concentration is 0.67mg / ml and disperse uniformly;

[0034] (2) In a vacuum glove box, take 99.8g of metal magnesium powder with a particle size of 325 meshes, add it to 100ml of absolute ethanol solution, and perform ultrasonic treatment and mechanical stirring for 15min; Graphene ethanol solution, the time length of ultrasonic treatment and mechanical stirring is 2h, obtains the graphene / magnesium powder mixed solution that disperses uniformly;

[0035] (3) The mixed solution prepared in step (2) is filtered, then vacuum-dried, and dried at 35° C. for 6 hours to obtain a magnesium-based graphene composite powder.

[0036] (4) Transfer the composite powder prepared in step (3) to...

Embodiment 2

[0042] A kind of preparation method of magnesium-based graphene composite material, carries out according to the following steps:

[0043] (1) Get 500mg graphene powder and join in 400ml dehydrated ethanol solution, through ultrasonic treatment of 600W, 30min, make the graphene ethanol solution that concentration is 1.25mg / ml and evenly dispersed;

[0044] (2) Take 99.5g of magnesium metal powder with a particle size of 400 mesh in a vacuum glove box, add it to 100ml of absolute ethanol solution, and perform ultrasonic treatment and mechanical stirring for 15min; Graphene ethanol solution, the time length of ultrasonic treatment and mechanical stirring is 2h, obtains the graphene / magnesium powder mixed solution that disperses uniformly;

[0045] (3) The mixed solution prepared in step (2) was filtered, then vacuum-dried, and dried at 45° C. for 5 hours to obtain a magnesium-based graphene composite powder.

[0046] (4) Transfer the composite powder prepared in step (3) to a vac...

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Abstract

The invention relates to a preparation method of a magnesium-based graphene composite material, which belongs to the technical field of magnesium-based composite materials. First, the graphene powder is dissolved in an appropriate amount of absolute ethanol solution to obtain a graphene ultrasonic dispersion; the metal magnesium powder is dissolved in absolute ethanol, and ultrasonic treatment and mechanical stirring are mixed to obtain a graphene / magnesium powder mixture; After vacuum drying, the magnesium-based graphene composite powder is obtained; the composite powder is hot-extruded with a jacket to obtain a magnesium-based graphene consolidated preform; the consolidated preform after removing the jacket is added to the molten metal, The magnesium-based graphene composite material was finally prepared by stirring and casting in a helical magnetic field for solidification. The invention adopts a simple and easy-to-implement preparation process, has low production cost, wide material preparation range, safety and environmental protection, has wide application and promotion prospects, and is suitable for preparing novel high-performance magnesium-based graphene composite materials.

Description

technical field [0001] The invention belongs to the research field of metal-based composite materials, and in particular relates to a preparation method of a magnesium-based graphene composite material. Background technique [0002] With the rapid development of modern science and technology and manufacturing industry, the demand and application of lightweight and high-strength metal structural materials in aerospace, transportation, electronic communication and other fields have become more and more extensive. Magnesium-based composites are made by adding a reinforcing phase to the magnesium matrix, which not only has outstanding characteristics such as low density, good damping and shock absorption, and good electromagnetic shielding, but also has higher specific strength, specific stiffness, and corrosion resistance. , wear resistance, dimensional stability. At present, the research on magnesium-based composite materials has become a research hotspot for scientific resea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C23/00
CPCC22C1/1015C22C1/1036C22C23/00C22C32/0089C22C1/1047
Inventor 于彦东孙兆妹张海波李彩霞
Owner HARBIN UNIV OF SCI & TECH
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