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al 2 Y particle and carbon nanotube hybrid reinforced ultra-light magnesium-lithium matrix composite material and preparation method

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: 2021-01-19
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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  • al <sub>2</sub> Y particle and carbon nanotube hybrid reinforced ultra-light magnesium-lithium matrix composite material and preparation method

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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, especially an Al 2 Y particle and carbon nanotube hybrid reinforced ultra-light magnesium-lithium-based composite material and preparation method, which comprises the following components in weight percent: 5-20wt.% micron-scale Al 2 Y particles, 1~5wt.% nanoscale Al 2 Y particles, 0.5-3wt% of nickel-coated carbon nanotubes on the surface, 11-25wt.% of Li, the balance of Mg, and the total amount of impurity elements Si, Fe, Cu and Ni is less than 0.02wt.%. Fabrication methods include micro / nanoscale Al 2 Three steps of Y particle pretreatment, carbon nanotube pretreatment and smelting. By using β-Li single-phase ultra-light magnesium-lithium alloy as the matrix and selecting a reinforcement phase with a lower density, the magnesium-lithium-based composite material still has excellent lightweight advantages; micron / nanoscale Al 2 Y particles and carbon nanotubes are used as reinforcing phases to play different roles in strengthening of different types and scales of reinforcing phases. Hybrid reinforcement is used to achieve synergistic strengthening effects, and the strengthening effect is far superior to that of traditional single-type and single-scale reinforcing phases. composite material.

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 Patents(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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