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Preparation method for scandium oxide coated carbon nanotube reinforced magnesium-based composite material

A technology of composite materials and carbon nanotubes, applied in the field of metal matrix composite materials, to achieve low process cost, fine grain structure, and avoid damage and cracking

Active Publication Date: 2020-04-28
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the combination of scandium oxide on carbon nanotubes and magnesium has not yet been developed and applied. Therefore, a modification treatment of carbon nanotube-wrapped scandium oxide is provided to solve the interfacial bonding between carbon nanotubes and magnesium substrates and improve carbon nanotubes. It is very meaningful to improve the dispersibility of the tube and refine the magnesium matrix structure to prepare magnesium matrix composites with better performance.

Method used

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  • Preparation method for scandium oxide coated carbon nanotube reinforced magnesium-based composite material
  • Preparation method for scandium oxide coated carbon nanotube reinforced magnesium-based composite material
  • Preparation method for scandium oxide coated carbon nanotube reinforced magnesium-based composite material

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Effect test

Embodiment 1

[0033] A scandium oxide-coated carbon nanotube reinforced magnesium-based composite material (AZ91-0.3wt%Sc 2 o 3 @CNTs) preparation method

[0034] (1) Preparation of reinforcement prefabricated blocks

[0035] Carbon nanotubes coated with scandium oxide (Sc 2 o 3 @CNTs) powder (purity above 90%) 0.3g, Al powder (purity 99%) 9g, Zn powder (purity 99%) 0.7g and stearic acid (melting point 75°C) 1g were mixed and added to the ball mill. Ball milling was carried out using a horizontal rotary ball mill. Use stainless steel grinding balls with diameters ranging from 4mm to 16mm, the ball-to-material ratio is 3:1, the ball milling speed is 200rpm, and the ball milling time is 180min. The liquid ball milling method is used, and 20ml of ethanol is added as a medium to protect the whole ball milling process from impurities. and oxidation interference, take out the mixture solution after the ball milling is completed, filter and dry to obtain the mixture powder.

[0036] Add the ...

Embodiment 2

[0042] A scandium oxide-coated carbon nanotube reinforced magnesium-based composite material (AZ91-0.5wt%Sc 2 o 3 @CNTs) preparation method

[0043] (1) Preparation of reinforcement prefabricated blocks

[0044] The carbon nanotube powder 0.5g (Sc 2 o 3 @CNTs purity 90% or more), Al powder (purity 99%) 9.5g, Zn powder (purity 99%) 1g and stearic acid (melting point 75°C) 1.5g are mixed and added to the ball mill. Ball milling was carried out using a horizontal rotary ball mill. Use stainless steel balls ranging in size from 4mm to 16mm in diameter, the ball-to-material ratio is 3:1, the ball milling speed is 100rpm, and the ball milling time is 240min. The liquid ball milling method is used, and 20ml of ethanol is added as a medium to protect the whole ball milling process from impurities. and oxidation interference.

[0045] After the ball milling is completed, the mixture solution is taken out, filtered and dried to obtain the mixture powder. Add the mixture powder in...

Embodiment 3

[0051] A scandium oxide-coated carbon nanotube reinforced magnesium-based composite material (AZ91-0.8wt%Sc 2 o 3 @CNTs) preparation method

[0052] (1) Preparation of reinforcement prefabricated blocks

[0053] The carbon nanotube powder 0.8g (Sc 2 o 3 @CNTs purity 90% or more), Al powder (purity 99%) 9.2g, Zn powder (purity 99%) 1g and stearic acid (melting point 75°C) 1g are mixed and added to the ball mill. Ball milling was carried out using a horizontal rotary ball mill. Use stainless steel balls ranging in size from 4mm to 16mm in diameter, the ball-to-material ratio is 3:1, the ball milling speed is 300rpm, and the ball milling time is 240min. The liquid ball milling method is used, and 20ml of ethanol is added as a medium to protect the whole ball milling process from impurities. and oxidation interference.

[0054] After the ball milling is completed, the mixture solution is taken out, filtered and dried to obtain the mixture powder. Add the mixture powder into...

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Abstract

The invention discloses a preparation method for a scandium oxide coated carbon nanotube reinforced magnesium-based composite material. The preparation method comprises the following steps that scandium oxide coated carbon nanotube powder, aluminum powder, zinc powder and stearic acid are used as starting materials, a scandium oxide coated carbon nanotube reinforced body prefabricated block is obtained through ball milling, filtering, drying and cold pressing forming, then a magnesium ingot and the scandium oxide coated carbon nanotube reinforced body prefabricated block are melted, mixed uniformly and subjected to vacuum suction casting treatment sequentially to obtain the scandium oxide coated carbon nanotube reinforced magnesium-based composite material. The preparation method has the advantages of being low in process cost, simple and efficient, and good in design environment; and meanwhile, the prepared coated scandium oxide can effectively improve the dispersibility of a carbon nanotube, the grain refinement of the composite material is obvious, the mechanical property of the composite material is excellent, and the preparation method can be suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of metal-based composite materials, and in particular relates to a preparation method of scandium oxide-coated carbon nanotube-reinforced magnesium-based composite materials. Background technique [0002] In recent years, the concept of green environmental protection has become more and more popular, and it has also penetrated into the production and manufacturing of various industries. The application of lightweight composite materials has become a solution for energy saving and emission reduction. Therefore, the demand for magnesium-based composite materials is also increasing. . Magnesium-based composites have the characteristics of high specific strength, high specific stiffness, high wear resistance, and light weight. They are considered to be one of the most advantageous ways to improve the mechanical properties of magnesium alloys and realize their industrial environmental protection applications. Carbon nanot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/02C22C23/00
CPCC22C1/101C22C1/1015C22C1/1036C22C23/00C22C26/00C22C2026/002
Inventor 刘勇张斌何阳京玉海罗岚陈杰
Owner NANCHANG UNIV
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