Preparation method of carbon-nanotube-enhanced magnesium-based composite material

A technology of carbon nanotubes and composite materials, applied in the field of materials, can solve the problems of inability to form interfacial bonding and poor metal wettability, and achieve the effects of improving wettability and interfacial bonding, avoiding melting temperature, and improving efficiency

Active Publication Date: 2012-10-24
NORTHEASTERN UNIV
View PDF1 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, since magnesium does not react with carbon, and the wettability of carbon and most metals

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Choose carbon nanotubes with a diameter of 20-40 nanometers and a length of <2 microns; the average diameter of magnesium powder particles is 70 microns; the average diameter of aluminum powder particles is 13 microns. The average diameter size of the zinc powder particles is 18 microns.

[0021] (2) Surface modification of carbon nanotubes, first cleaning in a mixed acid solution of nitric acid and hydrochloric acid, and 2+ Sensitized in solutions containing Pb 2+ activated in a solution containing NiSO 4 , NaH 2 PO 2 The coating is carried out in the solution, and the Ni in the plating solution 2+ The concentration is 0.08mol / L, and the reaction time is 30 minutes. The thickness of the Ni-P layer on the surface of the carbon nanotube after coating is about 10 nanometers.

[0022] (3) Mix the coated carbon nanotubes with elemental powders such as magnesium, aluminum and zinc at a ratio of 96% magnesium powder, 3.1% aluminum powder, and 0.9% zinc powder, and t...

Embodiment 2

[0027] (1) Choose carbon nanotubes with a diameter of 20-40 nanometers and a length of <2 microns; the average diameter of magnesium powder particles is 70 microns; the average diameter of aluminum powder particles is 13 microns; the average diameter of zinc powder particles is 18 microns.

[0028] (2) Surface modification of carbon nanotubes, first cleaning in a mixed acid solution of nitric acid and hydrochloric acid, and 2+ Sensitized in solutions containing Pb 2+ activated in a solution containing NiSO 4 , NaH 2 PO2 The coating is carried out in the solution, and the Ni in the plating solution 2+ The concentration is 0.08mol / L, and the reaction time is 35 minutes. The thickness of the Ni-P layer on the surface of the carbon nanotube after coating is about 10 nanometers.

[0029] (3) Mix the coated carbon nanotubes with elemental powders such as magnesium, aluminum and zinc at a ratio of 96% magnesium powder, 3.1% aluminum powder, and 0.9% zinc powder, and the volume fr...

Embodiment 3

[0034] (1) Choose carbon nanotubes with a diameter of 20-40 nanometers and a length of 5-15 microns. The average diameter of magnesium powder particles is 70 microns; the average diameter of aluminum powder particles is 13 microns; the average diameter of zinc powder particles is 18 microns.

[0035] (2) Surface modification of carbon nanotubes, first cleaning in a mixed acid solution of nitric acid and hydrochloric acid, and 2+ Sensitized in solutions containing Pb 2+ activated in a solution containing NiSO 4 , NaH 2 PO 2 The coating is carried out in the solution, and the Ni in the plating solution 2+ The concentration is 0.08mol / L, and the reaction time is 30 minutes. The thickness of the Ni-P layer on the surface of the carbon nanotube after coating is about 10 nanometers.

[0036] (3) Mix the coated carbon nanotubes with elemental powders such as magnesium, aluminum and zinc at a ratio of 96% magnesium powder, 3.1% aluminum powder, and 0.9% zinc powder, and the volum...

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
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method of a carbon-nanotube-enhanced magnesium-based composite material. The method comprises the steps that: carbon nanotubes are subjected to surface modification, such that a uniform and compact Ni-P alloy layer is formed on the surface of the carbon nanotubes; the modified carbon nanotubes are mixed with powders of elements such as magnesium, aluminum, and zinc, such that a mixed raw material is obtained; the mixed raw material is mixed with ceramic balls, such that mixed powder is obtained; the mixed powder is placed in a mold, and is subjected to bidirectional cold-pressing under room temperature; the composite material obtained by cold-pressing is subjected to vacuum sintering with the mold; and the composite material obtained by vacuum sintering is subjected to hot extrusion. With the method provided by the invention, the carbon-nanotube-enhanced magnesium-based composite material with high performance, light weight, and high strength can be prepared. The combination of the enhancing phase and the substrate is good. The material is advantaged in relatively high specific strength, high specific rigidity, high thermal conductivity, excellent machining performance, and the like. The composite material has good application prospect in industrial fields such as aeronautics and astronautics, automotives, 3C industries, sports and entertainments, and the like.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a preparation method of a carbon nanotube reinforced magnesium-based composite material. Background technique [0002] Magnesium is one of the most abundant elements in the earth's crust, ranking 8th, accounting for about 2.35% of the total amount of the earth's crust; magnesium has a low melting point of 651°C and a small specific gravity of 1.74g / cm 3 , about 1 / 4 of steel and 2 / 3 of aluminum. However, the strength of general magnesium alloys is not high, and the high-temperature performance is not good, so that magnesium alloys can only be used to manufacture shells and other parts that cannot bear large loads, and it is difficult to meet the requirements of aerospace and military equipment for high-strength and multi-functional magnesium structures. Material needs. The magnesium-based composite material has higher specific strength, specific stiffness, good damping performance, elec...

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): C22C1/05C22C23/00
Inventor 刘越晋冬艳田家龙赵群王誉
Owner NORTHEASTERN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap