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A kind of graphene oxide reinforced titanium-based composite material and preparation method thereof

一种钛基复合材料、石墨烯的技术，应用在氧化石墨烯增强钛基复合材料及其制备领域，能够解决制约复合材料性能等问题，达到广阔工业应用前景、提升力学性能、硬度高的效果

Inactive Publication Date: 2021-09-24
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This severely restricts the performance improvement of composite materials and becomes a key bottleneck in the development of carbonaceous material reinforced metal matrix composites technology.

Method used

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  • A kind of graphene oxide reinforced titanium-based composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Adopt this method invention to prepare pure titanium material, the steps are as follows:

[0023] 1) Using the improved Hummers method (see the literature Improved Synthesis of Graphene Oxide.Marcano DC, ACS NANO, 2010,4(8):4806-4814 (improved synthesis method of graphene oxide. Marcano DC, ACS NANO, 2010, Volume 4, Issue 8, Pages 4806-4814)) prepare a graphene oxide solution and dilute it with absolute ethanol to obtain a diluted graphene oxide solution;

[0024] 2) The mass ratio of the diluted graphene oxide solution to titanium powder is 0:1, and the titanium powder is dried in a vacuum oven for 12 hours;

[0025] 3) Put the obtained titanium powder into the mold of the hot-press sintering furnace, and then put it into the vacuum hot-press sintering furnace for heat preservation and pressure sintering under the protection of argon. 800 ℃, the pressure head exerted on the mold of the hot-press sintering furnace during the heat-preservation and pressure-holding sinte...

Embodiment 2

[0029] The first graphene oxide reinforced titanium-based composite material is prepared according to the following steps:

[0030] 1) The graphene oxide solution was prepared by the improved Hummers method, and diluted with absolute ethanol to obtain the diluted graphene oxide solution;

[0031] 2) Mix the graphene oxide and titanium powder contained in the above-mentioned diluted solution at a mass ratio of 0.01:1, and use an ultrasonic stirrer to ultrasonically disperse for 10 minutes to distribute the two phases evenly to obtain a mixed solution of graphene oxide and titanium powder;

[0032] 3) Put the mixed solution of graphene oxide and titanium powder in a water bath for 24 hours and stir until it is basically dry, then dry it in a vacuum oven for 12 hours to obtain a composite powder mixed with graphene oxide and titanium powder;

[0033] 4) Put the obtained composite powder into the mold of the hot-pressed sintering furnace, and then put it into the vacuum hot-presse...

Embodiment 3

[0036] The second graphene oxide reinforced titanium-based composite material is prepared according to the following steps:

[0037] 1) The graphene oxide solution was prepared by the improved Hummers method, and diluted with absolute ethanol to obtain the diluted graphene oxide solution;

[0038] 2) Mix the graphene oxide and titanium powder contained in the above diluted solution at a mass ratio of 0.025:1, and use an ultrasonic stirrer to ultrasonically disperse for 10 minutes to distribute the two phases evenly to obtain a mixed solution of graphene oxide and titanium powder;

[0039] 3) Put the mixed solution of graphene oxide and titanium powder in a water bath for 48 hours and stir until it is basically dry, then dry it in a vacuum oven for 12 hours to obtain a composite powder mixed with graphene oxide and titanium powder;

[0040] 4) Put the obtained composite powder into the mold of the hot-pressed sintering furnace, and then put it into the vacuum hot-pressed sinterin...

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Abstract

The invention provides a graphene oxide reinforced titanium-based composite material and a preparation method thereof. The composite material includes metal titanium and graphene oxide, and the mass ratio of graphene oxide to titanium powder is 0.01-0.05:1. The preparation method is as follows: use the improved Hummers method to prepare the graphene oxide solution, and dilute it to a certain concentration with absolute ethanol; prepare the titanium powder and the diluted graphene oxide solution under the action of ultrasonic dispersion to obtain the oxidation of titanium powder. Graphene solution, dry it in a vacuum drying oven to obtain a composite powder of titanium powder and graphene oxide; put the composite powder into a graphite mold in a hot-press sintering furnace, and sinter with heat preservation and pressure in an argon gas protection environment Graphene oxide reinforced titanium matrix composites were obtained. The present invention uses graphene oxide as a reinforcing body, which can effectively improve the agglomeration problem of the reinforcing body in the matrix, increase the percentage content of the reinforcing body in the matrix, and thereby improve the mechanical properties of the matrix to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, in particular to a graphene oxide reinforced titanium-based composite material and a preparation method thereof. Background technique [0002] Titanium-based composites have a series of advantages such as low density, high specific strength, high specific modulus, and excellent high-temperature performance. They are widely used in aerospace, automobile industry, medical equipment and other fields, and are considered to be future structural materials and functional materials. best choice. Usually, the selection of reinforcements with low density, high melting point and high strength is very important to improve the performance of titanium matrix composites. At present, the types of reinforcements in titanium matrix composites are mainly TiB, TiC, Al 2 o 3 , B 4 C, TiN, ZrB 2 Such as ceramic particle reinforcement and fiber reinforcement such as SiC. The volume fraction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22C1/05B22F1/00B22F3/14
CPCB22F1/0003B22F3/14B22F2998/10C22C1/05C22C14/00
Inventor 刘许旸刘经奇韦良晓胡宁吕学伟吴小龙
Owner CHONGQING UNIV
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