Nanometer TiC modified graphene reinforced titanium-matrix composite material, and preparation method and application thereof

A technology of titanium-based composite materials and graphene, which is applied in the field of metal-based composite materials, can solve the problem of less titanium-based composite materials, and achieve the effects of reduced ground reaction and excellent dispersion and coating effect

Active Publication Date: 2019-10-15
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, at present, the modification of graphene is mostly used in the fields of biomedicine and electrochemistry, while the application of titanium-based composite materials in aerospace and other fields is seldom

Method used

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  • Nanometer TiC modified graphene reinforced titanium-matrix composite material, and preparation method and application thereof
  • Nanometer TiC modified graphene reinforced titanium-matrix composite material, and preparation method and application thereof
  • Nanometer TiC modified graphene reinforced titanium-matrix composite material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Spark plasma technology sinters to produce nano-TiC modified graphene-reinforced titanium-based composite materials, using nano-TiC powder, graphene powder and spherical Ti-6Al-4V (TC4) powder as raw materials, of which nano-TiC powder has a particle size of 40nm and a graphene sheet thickness 1-5nm, diameter 0.1-6μm, particle size of titanium powder is 50μm (300 mesh), and a cylindrical composite material sintered body with a diameter of 20mm and a height of 10mm is produced.

[0044] Specific steps are as follows:

[0045] (1) Weigh 20g of TC4 powder and place it in a plastic tank, add nano-TiC powder with a mass fraction of 0.05wt.% (relative to the mass fraction of the titanium matrix), and add a certain amount of stainless steel grinding balls. The ball-to-material ratio is 1: 1. Mix continuously at a speed of 60r / min for 16h on the mixer.

[0046] (2) Continue to add the graphene powder that mass fraction is 0.2wt.% (relative to the mass fraction of titanium mat...

Embodiment 2

[0052] Spark plasma technology sinters to produce nano-TiC modified graphene-reinforced titanium-based composite materials. Nano-TiC powder, graphene powder and spherical pure Ti powder are used as raw materials. The particle size of nano-TiC powder is 40nm, and the thickness of graphene sheets is 1-5nm. The diameter is 0.1-6 μm, the particle size of the titanium powder is 80 μm (200 mesh), and a cylindrical composite material sintered body with a diameter of 20 mm and a height of 8 mm is produced.

[0053] Specific steps are as follows:

[0054] (1) Weigh 20g of pure Ti powder (purity is 99.5%) and place it in a plastic tank, add nano-TiC powder with a mass fraction of 0.05wt.% (relative to the mass fraction of the titanium matrix), add a certain amount of stainless steel mill The ratio of ball to material is 2:1. Mix continuously at a speed of 60r / min for 20h on the mixer.

[0055] (2) Continue to add the graphene powder that mass fraction is 0.4wt.% (relative to the mass ...

Embodiment 3

[0061] Nano-TiC modified graphene-reinforced titanium-based composite materials are produced by hot-pressing sintering. Nano-TiC powder, graphene powder and spherical Ti-12Nb-12Zr powder are used as raw materials. The particle size of nano-TiC powder is 40nm, and the thickness of graphene sheet is 1-5nm. The diameter is 0.1-6 μm, the particle size of the titanium powder is 80 μm (200 mesh), and a cylindrical composite material sintered body with a diameter of 20 mm and a height of 10 mm is produced.

[0062] Specific steps are as follows:

[0063] (1) Weighing 20g of Ti-12Nb-12Zr powder is placed in a plastic tank, adding a mass fraction of 0.05wt.% (relative to the mass fraction of the titanium matrix) nano-TiC powder, adding a certain amount of stainless steel grinding balls, balls Material ratio 5:1. Mix continuously at a speed of 60r / min for 10h on the mixer.

[0064] (2) Continue to add the graphene powder that mass fraction is 0.4wt.% (relative to the mass fraction of ...

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Abstract

The invention discloses a nanometer TiC modified graphene reinforced titanium-matrix composite material, and a preparation method and the application thereof. According to the composite material, titanium or titanium alloy serves as a titanium matrix, graphene with surfaced modified with nanometer TiC serves as a reinforced phase, and the modified graphene is evenly distributed around titanium matrix particles to from a network structure. According to the nanometer TiC modified graphene reinforced titanium-matrix composite material, and the preparation method and the application thereof, one layer of nanometer TiC is used for covering the surface of each titanium matrix particle with a three-dimensional mechanical mixing method, then the surface, with one layer of nanometer TiC, of each titanium matrix particle is covered with one layer of graphene, and then a core and shell structure with one titanium particle as the core, the nanometer TiC as the intermediate layer and graphene as the surface layer is obtained. With the preparation method, the problem that according to traditional wet milling, it is difficult to cover the surfaces of titanium particles with graphene evenly is solved. Because of the nanometer TiC, interface reaction between graphene and the titanium matrix in the preparation process is reduced to a certain degree, and the titanium-matrix composite material reinforced with graphene modified with nanometer TiC is obtained through sintering. The composite material is high in strength and plasticity, and good in forming and processing performance, and therebybeing capable of applied to aerospace and the ship and warship manufacturing industry.

Description

technical field [0001] The invention relates to a nano-TiC modified graphene-reinforced titanium-based composite material and a preparation method and application thereof, belonging to the technical field of metal-based composite materials. Background technique [0002] Titanium and titanium alloys have the characteristics of high specific strength, high specific modulus, and resistance to extreme conditions, and can be widely used in aerospace and automotive industries. It has considerable application potential in reducing energy consumption and improving engine thrust-to-weight ratio. Therefore, the development of titanium matrix composites (TiMCs) is of great significance to further improve the performance of titanium alloys and expand the application prospects of titanium alloys. At present, the best reinforcing phase of discontinuous titanium matrix composites (DRTMCs) prepared by powder metallurgy technology is ceramic material TiC particles or TiB whiskers. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C32/00C22C1/05C22C1/10
CPCC22C1/05C22C14/00C22C32/0052C22C32/0084
Inventor 张法明张彬
Owner SOUTHEAST UNIV
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