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Graphene/titanium composite material and preparation method thereof

A composite material and graphene technology, applied in the field of graphene/titanium composite materials and their preparation, can solve problems such as hindering the development of graphene composite materials, difficulty in uniformly dispersing graphene, and reducing the mechanical properties of materials, so as to improve mechanical properties, The effect of low resistivity and improved purity

Inactive Publication Date: 2015-07-29
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphene has become an ideal reinforcement for various composite materials due to its unique physical, chemical and mechanical properties. Reduced mechanical properties hinder the development of graphene composites

Method used

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  • Graphene/titanium composite material and preparation method thereof
  • Graphene/titanium composite material and preparation method thereof
  • Graphene/titanium composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A kind of graphene / titanium composite material, its preparation method comprises the following steps:

[0048] 1) Weigh graphene oxide and deionized water with a solid-to-liquid ratio of 0.2mg:1ml, add graphene oxide to deionized water, and carry out ultrasonic dispersion for 20min (power is 150W), and the concentration of graphene oxide is 0.2mg / ml dark yellow clear solution.

[0049] 2) Mix hydrofluoric acid (40wt%), water and nitric acid (65wt%) at a ratio of 1ml:3ml:5ml, put titanium powder into it, ultrasonically vibrate for 1min, then place in water for ultrasonic vibration for 2min to remove titanium The oxide film on the surface of the powder is then vacuum-dried to obtain titanium powder with the oxide film removed from the surface.

[0050]3) Add the titanium powder for removing the surface oxide film to the graphene oxide weight ratio of 0.005:1 into the dark yellow clear solution obtained in step 1), and configure the graphene oxide / titanium mixed solution....

Embodiment 2

[0055] A kind of graphene / titanium composite material, its preparation method comprises the following steps:

[0056] 1) Take graphene oxide and deionized water with a solid-to-liquid ratio of 0.5mg:1ml, place graphene oxide in deionized water, and carry out ultrasonic dispersion for 30min (power is 150W), and the concentration of graphene oxide is 0.5mg / ml of a dark yellow clear solution.

[0057] 2) Mix hydrofluoric acid (40wt%), water and nitric acid (65wt%) at a ratio of 1ml:3ml:4ml, put titanium powder into it, vibrate ultrasonically for 2min, then vibrate ultrasonically with water for 1min, remove the surface of titanium powder oxide film, and then vacuum-dried to obtain titanium powder that removes the oxide film on the surface.

[0058] 3) Add the titanium powder for removing the surface oxide film to the graphene oxide weight ratio of 0.01:1 into the dark yellow clear solution obtained in step 1), and configure the graphene oxide / titanium mixed solution.

[0059] 4...

Embodiment 3

[0063] A kind of graphene / titanium composite material, its preparation method comprises the following steps:

[0064] 1) Weigh graphene oxide and deionized water with a solid-to-liquid ratio of 0.5mg:1ml, place graphene oxide in deionized water, and carry out ultrasonic dispersion for 30min (power is 150W) to obtain a concentration of graphene oxide of 0.5mg / ml dark yellow clear solution.

[0065] 2) Mix hydrofluoric acid (40wt%), water and nitric acid (65wt%) at a ratio of 1ml:4ml:4ml, put titanium powder into it, vibrate ultrasonically for 1min, then vibrate ultrasonically with water for 1min to remove the surface of titanium powder oxide film, and then vacuum-dried to obtain titanium powder that removes the oxide film on the surface.

[0066] 3) Add the titanium powder for removing the surface oxide film to the graphene oxide weight ratio of 0.02:1 into the dark yellow clear solution obtained in step 1), and configure the graphene oxide / titanium mixed solution.

[0067] 4...

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Abstract

The invention relates to a graphene / titanium composite material and a preparation method thereof. The preparation method of the graphene / titanium composite material comprises steps as follows: 1) graphene oxide is added to water, the graphene oxide and the water are mixed and subjected to ultrasonic dispersion, and a clear graphene oxide solution is obtained; 2) oxide films on surfaces of titanium powder are removed; 3) the titanium powder with the oxide films on the surfaces removed is added to the obtained graphene oxide solution, and a graphene oxide / titanium mixed solution is obtained; 4) the prepared graphene oxide / titanium mixed solution is subjected to ultrasonic dispersion and then ball milling, a mixed solution obtained after ball milling is freeze-dried, and mixed powder is obtained; 5) the mixed powder is fully ground, then subjected to electric-field-activated pressure-assisted sintering and cooled, and the graphene / titanium composite material is obtained. The graphene / titanium composite material has excellent properties such as the high strength, the high corrosion resistance, the low electrical resistivity and the like and has the important significance in the aspect of industrial applications.

Description

technical field [0001] The invention belongs to the technical field of new material preparation, and in particular relates to a graphene / titanium composite material and a preparation method thereof. Background technique [0002] Due to its high specific strength, corrosion resistance, high temperature resistance, low temperature resistance, non-magnetism, and small linear expansion coefficient, titanium metal is widely used in aerospace, shipbuilding, petrochemical, marine engineering, architectural decoration and other fields. As structural materials, heat-resistant materials, corrosion-resistant materials. In the field of industrial applications, due to the higher requirements for titanium materials in terms of mechanical strength, high temperature performance and other performance, titanium alloys are widely used instead of pure titanium. Therefore, alloying is one of the development trends of modern titanium alloys. one. However, although the increase in the degree of ...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C1/10C22C14/00
Inventor 张帆牛波傅正义张金咏王为民
Owner WUHAN UNIV OF TECH
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