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Preparation method for graphene reinforced magnesium matrix composite material

A composite material and graphene technology, applied in the field of composite materials, can solve the problems of easy agglomeration and difficult dispersion of graphene, and achieve the effect of enhancing strength and hardness and improving comprehensive mechanical properties.

Inactive Publication Date: 2017-08-18
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of graphene-reinforced magnesium-based composite material, which not only solves the problem that graphene is not easily dispersed and easily agglomerated in the metal matrix, but also improves the mechanical properties of magnesium-based alloys

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  • Preparation method for graphene reinforced magnesium matrix composite material

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specific Embodiment approach 1

[0025] Specific implementation mode one: as figure 1 Shown, the preparation method of graphene-reinforced magnesium-based composite material in the present embodiment is carried out according to the following steps:

[0026] Step 1: weighing the graphene and magnesium alloy powders, wherein: graphene accounts for 0.1-4% of the mass of the magnesium alloy powders, and the weighing of the magnesium alloy powders is carried out in a vacuum glove box.

[0027] Step 2: Put the magnesium powder and a certain concentration of ethanol into a vacuum glove box, vacuumize, and then dissolve the magnesium powder in proportion to the ethanol under vacuum conditions.

[0028] Step 3: Take out the solution obtained in Step 2, put it in a JJ-1 precision booster electric stirrer for mechanical stirring, and at the same time carry out ultrasonic dispersion to obtain a magnesium alloy solution.

[0029] Step 4: Add graphene into ethanol, and ultrasonically mix in a KQ-800KDB ultrasonic machine ...

specific Embodiment approach 2

[0035] Embodiment 2: This embodiment differs from Embodiment 1 in that the graphene described in step 1 accounts for 0.5-3.5% of the mass of the magnesium alloy powder.

specific Embodiment approach 3

[0036] Embodiment 3: This embodiment differs from Embodiment 2 in that the graphene described in step 1 accounts for 1-3% of the mass of the magnesium alloy powder.

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Abstract

The invention discloses a preparation method for a graphene reinforced magnesium matrix composite material. The preparation method comprises the following steps that magnesium powder is dissolved in ethanol, mechanical stirring and ultrasonic dispersion are conducted, and a magnesium alloy solution is obtained; graphene is added into the ethanol, ultrasonic mixing is conducted, and a graphene dispersion solution is obtained; the graphene dispersion solution is added into the magnesium alloy solution drop by drop, ultrasonic dispersion and mechanical stirring are conducted, and a graphene magnesium alloy dispersion solution is obtained; the graphene magnesium alloy dispersion solution is placed in a low-temperature water bath kettle to be heated; after the solution evaporates to be liquid seal pulp, heating is stopped, the pulp is taken out to be subjected to vacuum ball milling, vacuum pumping is conducted after standing, then high-purity argon is pumped in, and ball milling is conducted; a ball-milled mixture is taken out, subjected to vacuum drying and put into a vacuum glove box to be subjected to manual dispersion grinding; and composite powder is put into a sintering furnace to be sintered. The technological process is simple, practicability is wide, and the graphene reinforced magnesium matrix composite material has wide military and aviation application prospects.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a preparation method of a graphene-reinforced magnesium-based composite material. Background technique [0002] Energy saving, emission reduction and light weight are inevitable trends in the development of the equipment manufacturing industry. Magnesium and its alloys are favored by people because of their light specific gravity, high specific strength, high specific height, vibration and noise reduction, and good recyclability. With the rapid development of aerospace, machinery, automobile and electronics industries, traditional magnesium alloys have poor corrosion resistance and poor mechanical properties, especially at high temperature, which seriously restricts the application of magnesium alloys in equipment manufacturing. . Magnesium matrix composites are an important and effective way to modify magnesium alloys. In order to obtain magnesium-base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/05
CPCC22C23/00C22C1/05
Inventor 于彦东张海波李磊
Owner HARBIN UNIV OF SCI & TECH
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