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Preparation method of single-walled carbon nanotube doped magnesium alloy structure

A technology of single-wall carbon nanotubes and carbon nanotubes, which is applied in the field of preparation of magnesium alloy structural parts, can solve problems such as uneven distribution of carbon nanotubes, unsuitability for industrial production, and organic solvents entering the air, so as to achieve enhanced mechanical properties, The effect of improving Young's modulus and improving mechanical properties

Active Publication Date: 2020-01-17
SHANGHAI ZIYAN ALLOY APPL TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] First of all, the existing technology mainly prepares magnesium alloy structural parts by melting and casting. After the magnesium alloy raw material is melted, due to the density difference from the carbon nanotubes, the carbon nanotubes in the magnesium alloy melt will agglomerate and float up, resulting in the carbon nanotubes in the magnesium alloy. The distribution of the product is uneven, which causes the mechanical properties of the product to be uneven
In addition, some existing technologies use liquid-phase dispersion and drying to incorporate carbon nanotubes into magnesium alloys. This method will cause a large amount of organic solvents to enter the air, which not only causes waste of organic solvents, but also pollutes the environment, and is not suitable for industrial production.

Method used

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  • Preparation method of single-walled carbon nanotube doped magnesium alloy structure
  • Preparation method of single-walled carbon nanotube doped magnesium alloy structure
  • Preparation method of single-walled carbon nanotube doped magnesium alloy structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A single-walled carbon nanotube-doped AZ91 series magnesium alloy structural part, which is made of AZ91 series magnesium alloy scrap raw materials containing single-walled carbon nanotubes by a semi-solid extrusion molding method, containing single-walled carbon nanotubes The composition ratio of carbon nanotubes and AZ91 magnesium alloy in AZ91 series magnesium alloy scrap raw materials is that single-walled carbon nanotubes account for 0.3 wt% of AZ91 magnesium alloy.

[0029] 1) The single-walled carbon nanotubes are produced by the arc discharge method. Specifically, the carbon electrode rod containing a certain proportion of catalyst is placed in a vacuum arc furnace, and an inert gas is introduced to generate a DC arc between the electrodes. The anode carbon rod and its catalyst evaporate simultaneously. , the carbon that is thermally decomposed into atomic clusters is combined with the catalyst in an inert gas to form a high-purity cloth-like single-walled carbon...

Embodiment 2

[0038] A single-walled carbon nanotube-doped AZ91 series magnesium alloy structural part, which is made of AZ91 series magnesium alloy scrap raw materials containing single-walled carbon nanotubes by a semi-solid extrusion molding method, containing single-walled carbon nanotubes The composition ratio of carbon nanotubes and AZ91 magnesium alloy in AZ91 series magnesium alloy scrap raw materials is that single-walled carbon nanotubes account for 0.01 wt% of AZ91 magnesium alloy.

[0039]Follow the same steps as 1) to 4) in Example 1, wherein step 3) is mixed with AZ91 series magnesium alloy chips at a mass percentage of 0.01%.

[0040] AZ91 series magnesium alloy structural parts doped with single-walled carbon nanotubes were obtained.

[0041] attached image 3 The tensile strength of the AZ91 magnesium alloy structure containing single-wall carbon nanotubes prepared in Example 2 is compared with that of the AZ91 magnesium alloy structure without single-wall carbon nanotubes...

Embodiment 3

[0045] A single-walled carbon nanotube-doped AZ91 series magnesium alloy structural part, which is made of AZ91 series magnesium alloy scrap raw materials containing single-walled carbon nanotubes by a semi-solid extrusion molding method, containing single-walled carbon nanotubes The composition ratio of carbon nanotubes and AZ91 magnesium alloy in AZ91 series magnesium alloy scrap raw materials is that single-walled carbon nanotubes account for 0.1 wt% of AZ91 magnesium alloy.

[0046] Follow the same steps as 1) to 4) in Example 1, wherein step 3) is mixed with AZ91 series magnesium alloy chips at a mass percentage of 0.1%.

[0047] AZ91 series magnesium alloy structural parts doped with single-walled carbon nanotubes were obtained.

[0048] attached Figure 5 The tensile strength of the AZ91 magnesium alloy structure containing single-wall carbon nanotubes prepared in Example 3 is compared with the AZ91 magnesium alloy structure without single-wall carbon nanotubes. It ca...

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Abstract

The invention provides a preparation method of a single-walled carbon nanotube-doped magnesium alloy structural part. The method is to mechanically mix the single-wall carbon nanotube powder with the magnesium alloy raw material to obtain the magnesium alloy raw material with the single-wall carbon nanotube attached, and then use the semi-solid forming technology to form the magnesium alloy with the single-wall carbon nanotube The raw materials are made into single-walled carbon nanotube doped magnesium alloy structural parts. In the preparation method of the single-wall carbon nanotube-doped magnesium alloy structural member, the single-wall carbon nanotube accounts for 0.01-5 wt% of the mass percentage of the magnesium alloy raw material. The method is simple, effective and pollution-free, and the obtained magnesium alloy molded product has excellent Young's modulus and maximum tensile strength.

Description

technical field [0001] The invention relates to a method for preparing a magnesium alloy structural part, in particular to a method for preparing a magnesium alloy structural part doped with single-walled carbon nanotubes. Background technique [0002] Magnesium is currently the lightest metal structure material in engineering applications in the world, its weight is only 2 / 3 of aluminum and 1 / 4 of steel. Magnesium alloys have high specific strength and specific stiffness (second only to titanium alloys), and can manufacture parts that are as complex as aluminum, but they are 1 / 3 lighter than aluminum, and their strength is due to aluminum alloy. It has good damping and shock absorption, good castability and stability. Under good structural conditions, the wall thickness of magnesium alloy castings is allowed to be as small as 0.6 mm, while the thickness of aluminum alloy castings can only be as small as 1.2 mm. However, compared with other mature structural materials, magn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C23/00C22C23/02
CPCC22C1/1036C22C23/00C22C23/02C22C26/00C22C2026/002C22C1/12C22C1/1073
Inventor 徐侃赵新洛张一帆刘轶
Owner SHANGHAI ZIYAN ALLOY APPL TECH