Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for reinforcing aluminum alloy component material by using cesium oxide modified graphene

A composite material and graphene technology, which is applied in the field of metal composite material preparation, can solve problems such as damage to the graphene crystal structure, difficulty in uniform dispersion, and weak interface bonding, so as to improve the quality of interface bonding, improve uniform dispersion, and have obvious mechanical properties Effect

Active Publication Date: 2019-11-15
YICHUN UNIVERSITY
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the interfacial bonding between graphene and many metal materials is weak, especially the poor interfacial bonding with aluminum substrates.
And because the density difference between graphene and the aluminum matrix is ​​large, graphene is very easy to float up during the smelting process, and it is difficult to disperse evenly in the aluminum melt, and finally form a uniform dispersion.
In addition, when the temperature is too high, aluminum and graphene will react to form a brittle phase of aluminum carbide, which will damage the crystal structure of graphene, resulting in poor strengthening effect.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for reinforcing aluminum alloy component material by using cesium oxide modified graphene
  • Method for reinforcing aluminum alloy component material by using cesium oxide modified graphene
  • Method for reinforcing aluminum alloy component material by using cesium oxide modified graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Cesium oxide-modified graphene pre-dispersion: According to the concentration ratio of 1.0 g / L, cesium oxide-modified graphene was added to ethanol, and a uniformly dispersed reinforcement mixture was obtained by ultrasonication for 0.5 h.

[0020] (2) According to the mass ratio of cesium oxide modified graphene to aluminum alloy powder of 5:95, aluminum alloy with a particle size of less than 325 mesh is added to the mixed solution obtained in step (1), and cesium oxide is obtained after mechanical stirring for 0.5h A mixture of modified graphene and aluminum alloy powder uniformly mixed.

[0021] (3) Filtrating the mixed solution obtained in step (2) and then vacuum-drying to obtain a composite powder uniformly mixed with cesium oxide-modified graphene and aluminum alloy powder.

[0022] (4) Use the composite powder obtained in step (3) to prepare a uniformly dispersed cesium oxide-modified graphene prefabricated block under a pressure of 100 MPa, and preheat it ...

Embodiment 2

[0028] The method for the cesium oxide modified graphene reinforced aluminum alloy composite material follows the steps below.

[0029] (1) Cesium oxide-modified graphene pre-dispersion: According to the concentration ratio of 1.0 g / L, cesium oxide-modified graphene was added to ethanol, and a uniformly dispersed reinforcement mixture was obtained by ultrasonication for 0.5 h.

[0030] (2) According to the mass ratio of cesium oxide modified graphene to aluminum alloy powder of 5:95, aluminum alloy with a particle size of less than 325 mesh is added to the mixed solution obtained in step (1), and cesium oxide is obtained after mechanical stirring for 0.5h A mixture of modified graphene and aluminum alloy powder uniformly mixed.

[0031] (3) Filtrating the mixed solution obtained in step (2) and then vacuum-drying to obtain a composite powder uniformly mixed with cesium oxide-modified graphene and aluminum alloy powder.

[0032] (4) Use the composite powder obtained in step (3...

Embodiment 3

[0038] The method for the cesium oxide modified graphene reinforced aluminum alloy composite material follows the steps below.

[0039] (1) Cesium oxide-modified graphene pre-dispersion: According to the concentration ratio of 1.0 g / L, cesium oxide-modified graphene was added to ethanol, and a uniformly dispersed reinforcement mixture was obtained by ultrasonication for 0.5 h.

[0040] (2) According to the mass ratio of cesium oxide modified graphene to aluminum alloy powder of 5:95, aluminum alloy with a particle size of less than 325 mesh is added to the mixed solution obtained in step (1), and cesium oxide is obtained after mechanical stirring for 0.5h A mixture of modified graphene and aluminum alloy powder uniformly mixed.

[0041] (3) Filtrating the mixed solution obtained in step (2) and then vacuum-drying to obtain a composite powder uniformly mixed with cesium oxide-modified graphene and aluminum alloy powder.

[0042] (4) Use the composite powder obtained in step (3...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Yield strengthaaaaaaaaaa
Yield strengthaaaaaaaaaa
Yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for reinforcing an aluminum alloy component material by using cesium oxide modified graphene. The method comprises the following steps of: firstly preparing a graphenealuminum alloy powder precast block in which the mass percentage of the cesium oxide modified graphene is 2% to 10% by adopting a liquid dispersion technology; subsequently adding the graphene aluminum alloy powder precast block to aluminum alloy melt; after melting, carrying out stir-dispersion for 1-3 min at a mechanical stirring speed of 50 rpm to 150 rpm; and under the temperature of 650 DEG Cto 700 DEG C, preparing the cesium oxide modified graphene reinforced aluminum alloy component material of which the mass percentage of the cesium oxide modified graphene is 0.1% to 1%. The method provided by the invention can effectively improve the uniform dispersity of the graphene in an aluminum matrix, prevents the graphene from being corroded by aluminum and also improves the bonding quality of interfaces of the graphene and the aluminum; the mechanical properties of an aluminum-based composite material are improved relatively obviously by virtue of grain refined structures, so the method is suitable for industrial preparation of light high-strength graphene-aluminum alloy composite material.

Description

technical field [0001] The invention belongs to the field of metal composite material preparation, in particular to a preparation method of aluminum alloy composite material. Background technique [0002] Aluminum matrix composites have the advantages of higher strength, hardness and lower thermal expansion coefficient than the matrix, making them widely used in automotive, aerospace, construction and other fields. How to develop lightweight, high-strength and high-toughness aluminum alloy composites is a research hotspot in the field of metal matrix composites. Graphene has excellent electrical and thermal conductivity, and super mechanical properties. Therefore, it is considered to be an excellent reinforcement for aluminum alloys. However, graphene has weak interfacial bonding with many metallic materials, especially poor interfacial bonding with aluminum substrates. And because the density difference between graphene and the aluminum matrix is ​​large, graphene is ver...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22C21/00C22C1/02
CPCC22C1/026C22C21/00
Inventor 李颖康杨春材邓运衍马广祥袁秋红周国华
Owner YICHUN UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com