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Preparation method for graphene/titanium-based nanocomposite without interface reaction

A nanocomposite material and graphene technology, which is applied in the field of graphene/titanium-based nanocomposite preparation, to achieve the effects of inhibiting the growth of grains, refining matrix grains, and improving mechanical properties

Active Publication Date: 2021-07-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the severe interfacial reaction problem commonly existing in the preparation process of graphene-reinforced titanium-based composite materials, the present invention provides a method for preparing graphene / titanium-based nanocomposites without interfacial reactions. Plastic deformation, on the one hand, can evenly disperse graphene in the titanium matrix and obtain submicron or nanometerization of the titanium matrix; on the other hand, it can greatly inhibit the reaction between graphene and titanium matrix to obtain a composite material without interface reaction, from Fundamentally solve the bottleneck that is difficult to control the interfacial reaction of graphene-reinforced titanium matrix composites

Method used

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  • Preparation method for graphene/titanium-based nanocomposite without interface reaction

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Embodiment 1

[0059] The specific preparation steps of the graphene / titanium-based nanocomposite without interfacial reaction are as follows:

[0060] (1) Add 0.018g graphene and 0.018g sodium dodecylbenzenesulfonate (SDS) into 100mL absolute ethanol, and ultrasonically disperse at 100W power for 0.5h; then add 3g pure titanium powder, and adjust the ultrasonic power to 300W, and then continue to ultrasonically disperse for 0.5h; transfer the mixed slurry to a rotary evaporator, remove absolute ethanol by rotary evaporation at 30r / min and 70°C, and then transfer to a vacuum oven at 50°C to dry for 12h to obtain Dry mixed powder;

[0061] (2) First place a stainless steel sheath with an inner diameter of 14mm, an outer diameter of 16mm, and a height of 2.5mm at 1000°C for annealing treatment for 1 hour, then put the mixed powder into the sheath and use a pressure of 5GPa to seal the inside of the sheath The mixed powder is pre-pressed into a round cake body with a diameter of 14mm and a thi...

Embodiment 2

[0068] The specific preparation steps of the graphene / titanium-based nanocomposite without interfacial reaction are as follows:

[0069] (1) Add 0.018g of graphene and 0.018g of sodium dodecylbenzenesulfonate into 150mL of absolute ethanol, ultrasonically disperse at 100W power for 1h; then add 3g of pure titanium powder, and adjust the ultrasonic power to 300W, then Continue ultrasonic dispersion for 1 hour; transfer the mixed slurry to a rotary evaporator, remove absolute ethanol by rotary evaporation at 30r / min and 80°C, then transfer to a vacuum oven at 60°C for 12 hours to obtain a dry mixed powder ;

[0070] (2) First anneal the stainless steel sheath with an inner diameter of 10mm, an outer diameter of 12mm and a height of 2mm at 1000°C for 1h, then put the mixed powder into the sheath and use the pressure of 3GPa to put the mixed powder in the sheath The body is pre-pressed into a round cake body with a diameter of 10mm and a thickness of 2mm, and then the package is ...

Embodiment 3

[0076] The specific preparation steps of the graphene / titanium-based nanocomposite without interfacial reaction are as follows:

[0077] (1) Add 0.036g of graphene and 0.036g of sodium dodecylbenzenesulfonate into 200mL of absolute ethanol, ultrasonically disperse at 100W power for 1h; then add 3g of pure titanium powder, and adjust the ultrasonic power to 600W, then Continue ultrasonic dispersion for 1 hour; transfer the mixed slurry to a rotary evaporator, remove absolute ethanol by rotary evaporation at 30r / min and 80°C, then transfer to a vacuum oven at 60°C for 12 hours to obtain a dry mixed powder ;

[0078] (2) First place a stainless steel sheath with an inner diameter of 14mm, an outer diameter of 16mm, and a height of 2mm at 1050°C for 0.5h for annealing treatment, then put the mixed powder into the sheath and use a pressure of 4GPa to seal the inside of the sheath The mixed powder is pre-pressed into a round cake body with a diameter of 14mm and a thickness of 2mm,...

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Abstract

The invention relates to a preparation method for a graphene / titanium-based nanocomposite without interface reaction, and belongs to the technical field of preparation of metal-based composites. The method comprises the following steps that firstly, graphene powder and titanium-based powder are uniformly mixed by adopting an ultrasonic dispersion technology, and then high-pressure torsion severe plastic deformation is carried out on the mixed powder to obtain the graphene / titanium-based nanocomposite without the interface reaction. The method is based on high-pressure torsion severe plastic deformation at the room temperature condition, on one hand, graphene can be uniformly dispersed in a titanium matrix, submicron or nanocrystallization of the titanium matrix can be obtained, and on the other hand, the reaction of graphene and the titanium matrix can be greatly inhibited, so that the composite without the interface reaction is obtained, and the bottleneck that the interface reaction of the graphene reinforced titanium matrix composite is difficult to control is fundamentally solved; and the method is beneficial to improving the mechanical property of the graphene / titanium-based nanocomposite.

Description

technical field [0001] The invention relates to a method for preparing a graphene / titanium-based nanocomposite material without interface reaction, and belongs to the technical field of preparing metal-based composite materials. Background technique [0002] Due to its excellent specific strength, specific stiffness, corrosion resistance and wear resistance, titanium matrix composites have broad application prospects in the fields of aviation, aerospace, automobiles and biomedicine. Graphene is a two-dimensional nanocarbon material with high specific surface area and outstanding physical and mechanical properties. In recent years, it has become a "star" reinforcement phase in the field of metal matrix composites. Nowadays, a large number of researches on metal substrates such as aluminum-based, copper-based and nickel-based have been carried out at home and abroad, and a good graphene enhancement effect has been achieved. However, for graphene / titanium-based composites, due...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C1/10C22C14/00B22F3/02
CPCC22C1/05C22C14/00B22F3/02
Inventor 穆啸楠张洪梅陈鹏万程兴旺段红强刘亮葛宇鑫熊倪
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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