Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of graphene/carbon nanotube reinforced magnesium-lithium matrix composite material

A technology of composite materials and carbon nanotubes, which is applied in the preparation of carbon fiber reinforced magnesium-lithium matrix composites and the preparation of graphene/carbon nanotubes reinforced magnesium-lithium matrix composites, which can solve the problem of inability to prepare structural magnesium-lithium matrix composite components , Low interface strength and other issues, to achieve the effect of improving yield and strengthening effect, excellent mechanical properties, and remarkable strengthening effect

Active Publication Date: 2020-11-10
SHANGHAI JIAO TONG UNIV
View PDF11 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the lower preparation temperature inhibits the high-temperature interfacial reaction between the reinforcement and the matrix, the reinforcement and the matrix are mainly mechanically bonded, and the interface strength is low; at the same time, the thin film metallurgy method mainly relies on rolling forming, which cannot be achieved at all. Fabrication of Mg-Li Matrix Composite Components with Complicated Structure

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
  • Preparation method of graphene/carbon nanotube reinforced magnesium-lithium matrix composite material
  • Preparation method of graphene/carbon nanotube reinforced magnesium-lithium matrix composite material
  • Preparation method of graphene/carbon nanotube reinforced magnesium-lithium matrix composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1) The Mg-Li-Al alloy ingot and the Mg-Al matrix composite material ingot containing carbon nanotube reinforcement phase are prepared first.

[0044] The mass percentage of each component in the Mg-Li-Al alloy ingot is: 7% Li, 0.5% Al, and the balance is Mg and other unavoidable impurities. The preparation steps are as follows: melting pure magnesium ingots, pure lithium ingots and pure aluminum ingots in a certain proportion in a resistance melting furnace according to the target alloy composition. The melting temperature is 720°C, and the melting protective gas is Ar gas. After the charge is completely melted, continue to keep warm for half an hour, stir for 5 minutes, and finally pour into a steel mold preheated to 200°C to obtain a Mg-7Li-0.5Al alloy ingot.

[0045] The mass percentage of each component in the Mg-Al matrix composite ingot containing carbon nanotube reinforcement phase is: 3% Al, 0.1% CNTs, and the balance is Mg and other unavoidable impurities. Th...

Embodiment 2

[0050] 1) The Mg-Li-Al alloy ingot and the Mg-Al matrix composite material ingot containing carbon nanotube reinforcement phase are prepared first.

[0051] The mass percentage of each component in the Mg-Li-Al alloy ingot is: 9% Li, 1% Al, and the balance is Mg and other unavoidable impurities. The preparation steps are as follows: melting pure magnesium ingots, pure lithium ingots and pure aluminum ingots in a certain proportion in a resistance melting furnace according to the target alloy composition. The melting temperature is 720°C, and the melting protective gas is Ar gas. After the charge is completely melted, continue to keep warm for half an hour, stir for 5 minutes, and finally pour into a steel mold preheated to 200°C to obtain an ingot of Mg-9Li-1Al alloy.

[0052] The mass percentage of each component in the Mg-Al matrix composite ingot containing carbon nanotube reinforcement phase is: 4% Al, 0.5% CNTs, and the balance is Mg and other unavoidable impurities. Th...

Embodiment 3

[0057] 1) Mg-Li-Al alloy ingots and Mg-Al-based composite material ingots containing graphene-enhanced phases are prepared first.

[0058] The mass percentage of each component in the Mg-Li-Al alloy ingot is: 15% Li, 2% Al, and the balance is Mg and other unavoidable impurities. The preparation steps are as follows: melting pure magnesium ingots, pure lithium ingots and pure aluminum ingots in a certain proportion in a resistance melting furnace according to the target alloy composition. The melting temperature is 720°C, and the melting protective gas is Ar gas. After the charge is completely melted, continue to keep warm for half an hour, stir for 5 minutes, and finally pour into a steel mold preheated to 200°C to obtain an ingot of Mg-15Li-2Al alloy.

[0059] The mass percentage of each component in the ingot of Mg-Al matrix composite material containing graphene-enhanced phase is: 5% Al, 1% GNPs, and the balance is Mg and other unavoidable impurities. The preparation step...

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
Tensile strengthaaaaaaaaaa
Elastic modulusaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a graphene / carbon nanotube reinforced magnesium-lithium matrix composite material. The preparation method of the graphene / carbon nanotube reinforced magnesium-lithium matrix composite material comprises the following steps of a, firstly respectively preparing an Mg-Li-Al alloy ingot and an Mg-Al matrix composite material ingot containing a carbon nanotube / graphene reinforced phase; b, re-heating the two different alloy ingots to form alloy slurries; c, after mixing the two alloy slurries, casting to obtain an Mg-Li matrix composite material ingotcontaining the carbon nanotube / graphene reinforced phase; and d, carrying out heat treatment and plastic deformation on the prepared Mg-Li matrix composite material ingot. According to the preparation method of the graphene / carbon nanotube reinforced magnesium-lithium matrix composite material provided by the invention, through a simple process, the problem that graphene / carbon nanotube is easilyeroded by Li elements so as to cause the reduction of a reinforcement effect in a traditional composite material preparation process can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and relates to a preparation method of a carbon fiber-reinforced magnesium-lithium-based composite material, in particular to a preparation method of a graphene / carbon nanotube-reinforced magnesium-lithium-based composite material. Background technique [0002] In the context of gradual energy shortage and increasingly stringent environmental protection requirements, global industrial technology has to develop in the direction of "light weight", "low carbonization" and "less pollution". Therefore, in industries such as electronic products, automobiles, and aerospace, reducing the weight of equipment by developing new lightweight and high-strength materials has always been the focus and hotspot of researchers' long-term exploration. Magnesium-lithium alloy is currently the lightest metal structure material, and its density is generally only 1.3-1.65g / cm 3 , which is 75% of ...

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): C22C1/10C22C23/00
CPCC22C1/1036C22C23/00C22C26/00C22C2026/002C22C1/1047
Inventor 童鑫吴国华刘文才张亮
Owner SHANGHAI JIAO TONG UNIV