Al2Y particle and carbon nano tube hybrid reinforced ultra-light magnesium-lithium-based composite material and preparation method thereof

A technology of carbon nanotubes and composite materials, applied in metal material coating technology, liquid chemical plating, coating, etc., can solve the problems of unsatisfactory mechanical properties of magnesium-lithium-based composite materials, and achieve excellent lightweight advantages , avoid agglomeration, high bonding strength

Active Publication Date: 2019-02-12
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the existing magnesium-lithium-based composite materials are still unsatisfactory.

Method used

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  • Al2Y particle and carbon nano tube hybrid reinforced ultra-light magnesium-lithium-based composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] a kind of Al 2 Y particle and carbon nanotube hybrid reinforced ultra-light magnesium-lithium-based composite material, comprising the following components in weight percent: 5wt% micron-scale Al 2 Y particles, 1 wt% nanoscale Al 2 Y particles, 0.5wt% nickel-coated carbon nanotubes on the surface, 11wt% Li, the balance being Mg, and the total amount of impurity elements Si, Fe, Cu and Ni is less than 0.02wt%. micron scale Al 2 The particle size of the Y particles is 1-30 μm. Nanoscale Al 2 The particle size of the Y particles is 0.01-1 μm. Carbon nanotubes are single-walled or multi-walled carbon nanotubes with an aspect ratio greater than 20.

[0028] The Al 2 The preparation method of Y particle and carbon nanotube hybrid reinforced ultra-light magnesium-lithium matrix composite material is as follows:

[0029] In the first step, the micro / nanoscale Al 2 Y particles are mixed with magnesium powder, and then ball milled in a planetary ball mill to obtain compos...

Embodiment 2

[0034] a kind of Al 2 Y particles and carbon nanotube hybrid reinforced ultra-light magnesium-lithium-based composite material, including the following components in weight percent: 10wt% micron-scale Al 2 Y particles, 3 wt% nanoscale Al 2 Y particles, 1wt% of nickel-plated carbon nanotubes on the surface, 16wt% of Li, the balance of Mg, and the total amount of impurity elements Si, Fe, Cu and Ni is less than 0.02wt%. micron scale Al 2 The particle size of the Y particles is 1-30 μm. Nanoscale Al 2 The particle size of the Y particles is 0.01-1 μm. Carbon nanotubes are single-walled or multi-walled carbon nanotubes with an aspect ratio greater than 20.

[0035] The Al 2 The preparation method of Y particle and carbon nanotube hybrid reinforced ultra-light magnesium-lithium matrix composite material is as follows:

[0036] In the first step, the micro / nanoscale Al 2 Y particles are mixed with magnesium powder, and then ball milled in a planetary ball mill to obtain compos...

Embodiment 3

[0041] a kind of Al 2 Y particles and carbon nanotube hybrid reinforced ultra-light magnesium-lithium-based composite material, including the following components in weight percent: 20wt% micron-scale Al 2 Y particles, 5 wt% nanoscale Al 2 Y particles, 3wt% of carbon nanotubes coated with nickel on the surface, 25wt% of Li, the balance of Mg, and the total amount of impurity elements Si, Fe, Cu and Ni is less than 0.02wt%. micron scale Al 2 The particle size of the Y particles is 1-30 μm. Nanoscale Al 2 The particle size of the Y particles is 0.01-1 μm. Carbon nanotubes are single-walled or multi-walled carbon nanotubes with an aspect ratio greater than 20.

[0042] The Al 2 The preparation method of Y particle and carbon nanotube hybrid reinforced ultra-light magnesium-lithium matrix composite material is as follows:

[0043] In the first step, the micro / nanoscale Al 2 Y particles are mixed with magnesium powder, and then ball milled in a planetary ball mill to obtain...

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Abstract

The invention relates to the technical field of metal materials, in particular to an Al2Y particle and carbon nano tube hybrid reinforced ultra-light magnesium-lithium-based composite material and a preparation method thereof. The magnesium-lithium-based composite material comprises the following components of, by weight, 5-20wt.% of micron-scale Al2Y particles, 1-5wt.% of nano-scale Al2Y particles, 0.5-3wt.% of a surface-nickel-plated carbon nano tube, 11-25wt.% of Li, and the balance Mg, and the total amount of impurity elements of Si, Fe, Cu and Ni is less than 0.02wt.%. The preparation method comprises the three steps of pre-treatment of the micron /nano-scale Al2Y particles, pre-treatment of the carbon nano tube and smelting. According to the composite material and the preparation method thereof, a beta-Li single-phase ultra-light magnesium lithium alloy is used as a matrix, and reinforcing phases with lower density are selected, so that the obtained magnesium-lithium-based composite material still has the excellent light-weight advantage; and the micron/nano-scale Al2Y particles and the carbon nano tube are used as reinforcing phases, so that different functions of the reinforcing phases of different types and scales in the reinforcement aspect are exerted, the cooperative reinforcement effect is achieved by utilizing hybrid reinforcement, the reinforcement effect is farhigher than that of a traditional reinforcing phase reinforced magnesium-lithium-based composite material of a single type and a single scale.

Description

technical field [0001] The invention relates to the technical field of metal materials, relates to a magnesium-lithium-based composite material and a preparation method thereof, in particular to an Al 2 Y particles and carbon nanotubes hybrid reinforced ultra-light Mg-Li matrix composites. Background technique [0002] In the field of modern aerospace, the weight reduction requirements for aircraft structures are no longer "care about every detail", but "care about every detail". Therefore, the development of new ultra-light metal structural materials is particularly important. Magnesium-lithium alloy is an alloy material with magnesium and lithium as the main constituent elements. Since the density of lithium is only 0.534g / cm 3 , Magnesium-lithium alloy is by far the lightest metal structure material. According to the different lithium content, the density of magnesium-lithium alloy is 1.25-1.65g / cm 3 It is not only far lower than steel, titanium alloy and aluminum all...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/02C22C1/10C23C18/32
CPCC22C1/02C22C1/1005C22C1/101C22C1/1036C22C23/00C23C18/32C22C1/1047
Inventor 张扬李飞龙陈晓阳刘骁卢雅琳李小平
Owner JIANGSU UNIV OF TECH
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