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Method for reinforcing magnesium alloy compound material through zinc oxide-covering graphene

A technology for strengthening magnesium alloys and composite materials, applied in the field of preparation of magnesium alloy composite materials, to achieve the effects of large mechanical properties, improved interface bonding quality, and good grain refinement effect

Active Publication Date: 2019-01-25
JIANGXI TIANYUE AUTOMOBILE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently, research on graphene-reinforced magnesium alloy composites is still in its infancy

Method used

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  • Method for reinforcing magnesium alloy compound material through zinc oxide-covering graphene
  • Method for reinforcing magnesium alloy compound material through zinc oxide-covering graphene
  • Method for reinforcing magnesium alloy compound material through zinc oxide-covering graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The method for coating the zinc oxide graphene reinforced magnesium alloy composite material comprises the following steps.

[0021] (1) Coated zinc oxide graphene pre-dispersion: According to the concentration ratio of 1g / L, the coated zinc oxide graphene was added to ethanol or distilled water, and ultrasonically 0.5h to obtain a uniformly dispersed reinforcement phase dispersion.

[0022] (2) According to the ratio of the mass ratio of coated zinc oxide graphene to pure aluminum powder of 10:90, add the pure aluminum powder with a particle size of less than 400 mesh into the dispersion obtained in step (1), ultrasonically and mechanically stir for 0.5h A uniformly mixed slurry of coated zinc oxide graphene-aluminum powder is obtained.

[0023] (3) After filtering the slurry obtained in step (2), vacuum drying is performed to obtain a mixed powder coated with zinc oxide graphene-aluminum powder which is pre-dispersed uniformly.

[0024] (4) Use the mixed powder obtai...

Embodiment 2

[0031] The method for coating the zinc oxide graphene reinforced magnesium alloy composite material comprises the following steps.

[0032] (1) Coated zinc oxide graphene pre-dispersion: according to the concentration ratio of 2g / L, the coated zinc oxide graphene is added to ethanol or distilled water, and ultrasonicated for 1 hour to obtain a uniformly dispersed reinforcement phase dispersion.

[0033] (2) According to the mass ratio of coated zinc oxide graphene and pure aluminum powder as 15:85, add pure aluminum powder with a particle size of less than 400 meshes to the dispersion obtained in step (1), ultrasonically and mechanically stir for 1 hour to obtain A uniformly mixed slurry of coated zinc oxide graphene-aluminum powder.

[0034] (3) After filtering the slurry obtained in step (2), vacuum drying is performed to obtain a mixed powder coated with zinc oxide graphene-aluminum powder which is pre-dispersed uniformly.

[0035] (4) Use the mixed powder obtained in step...

Embodiment 3

[0042] The method for coating the zinc oxide graphene reinforced magnesium alloy composite material comprises the following steps.

[0043] (1) Coated zinc oxide graphene pre-dispersion: According to the concentration ratio of 5g / L, the coated zinc oxide graphene is added to ethanol or distilled water, and ultrasonicated for 2 hours to obtain a uniformly dispersed reinforcing phase dispersion.

[0044](2) According to the mass ratio of coated zinc oxide graphene and pure aluminum powder as 25:75, add pure aluminum powder with a particle size of less than 400 meshes to the dispersion obtained in step (1), ultrasonically and mechanically stir for 2 hours to obtain A uniformly mixed slurry of coated zinc oxide graphene-aluminum powder.

[0045] (3) After filtering the slurry obtained in step (2), vacuum drying is performed to obtain a mixed powder coated with zinc oxide graphene-aluminum powder which is pre-dispersed uniformly.

[0046] (4) Use the mixed powder obtained in step ...

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Abstract

The invention discloses a method for reinforcing a magnesium alloy compound material through zinc oxide-covering graphene. The method comprises the following steps that a liquid-state dispersion method is adopted for firstly preparing a preform green body with a mass ratio of the zinc oxide-covering graphene to pure aluminum powder equal to 10-25%, then the preform green body is added into magnesium alloy melt, and after ultrasonic dispersion treatment with power of 500-1000 W is conducted for 120 min, under a condition of 550-630 DEG C, a casting method is adopted for preparing the AZ91 magnesium alloy compound material reinforced by the zinc oxide-covering graphene with a content of 0.1-5%. By means of the method for reinforcing the magnesium alloy compound material through the zinc oxide-covering graphene, the even dispersion of the graphene in a magnesium matrix can be effectively improved, the interface bonding quality of the graphene and the magnesium matrix is improved, meanwhile, a good crystal grain refining effect is obtained, and the mechanical performance of the compound material is greatly improved, so that the method for reinforcing the magnesium alloy compound material through the zinc oxide-covering graphene is suitable for preparing the graphene-magnesium alloy compound material excellent in performance on a large scale.

Description

technical field [0001] The invention belongs to the field of metal composite material preparation, in particular to a preparation method of magnesium alloy composite material. Background technique [0002] Magnesium alloy composites have a series of advantages such as high specific strength, high specific stiffness, good shock absorption and wear resistance, making them have huge potential application prospects in the fields of electronics, aerospace and automobiles. How to develop lightweight, high-strength and high-toughness magnesium alloy composites has become one of the research hotspots in the field of materials. As an obvious member of the nanocarbon family, graphene is considered to be an excellent reinforcement for magnesium alloys due to its good electrical and thermal conductivity and excellent mechanical properties. Currently, research on graphene-reinforced magnesium alloy composites is still in its infancy. Like carbon nanotubes, graphene has weak interfacial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/02C22C1/06C22C23/00
CPCC22C1/06C22C1/1036C22C23/00
Inventor 袁秋红廖琳周国华林泉博
Owner JIANGXI TIANYUE AUTOMOBILE PARTS
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