Low-content few-layer graphene intensified titanium-based composite material and preparation method

A titanium-based composite material and few-layer graphene technology, applied in the field of metal-based composite materials, can solve the problems such as the performance of TiMCs needs to be improved, and achieve the effects of less impurity content, simple process and high repeatability

Active Publication Date: 2016-08-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few relevant research reports on FLG reinforced titanium matrix composites, and the performance of TiMCs needs to be improved.

Method used

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  • Low-content few-layer graphene intensified titanium-based composite material and preparation method
  • Low-content few-layer graphene intensified titanium-based composite material and preparation method
  • Low-content few-layer graphene intensified titanium-based composite material and preparation method

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preparation example Construction

[0029] Preparation of pure titanium: mix titanium powder with absolute ethanol and ultrasonically disperse for 20 to 30 minutes; then transfer to a ball mill jar and add ball milling beads, wherein the mass ratio of ball milling beads to titanium powder is 5 to 6:1, Ball mill at 300-350r / min for 2.5-3 hours; then remove the absolute ethanol in the slurry after ball milling to obtain powder; dry the obtained powder in a vacuum oven at 90-100°C for 8-10 hours to obtain the dried Powder; put the dried powder into a steel mold, and put graphite paper inside the mold, then apply a pressure of 250-300MPa to the steel mold, and then heat it to 550-600℃ at a heating rate of 100-150℃ / min, and keep it warm for 9 Naturally cool after ~10 minutes, the product in the steel mold is a rough billet; heat the rough billet to 450-950°C, keep it warm for 9-10 minutes, and immediately roll it, the rolling deformation is 50-60%, and the rolling is completed After air cooling, pure titanium was obt...

Embodiment 1

[0037] A low-content few-layer graphene-reinforced titanium-based composite material, based on the mass of the composite material as 100%, its composition and the mass fraction of each component: few-layer graphene powder 0.400% and titanium powder 99.600%

[0038] The preparation steps of the low-content few-layer graphene-reinforced titanium-based composite material described in this implementation are as follows:

[0039]Mix 0.12g of few-layer graphene powder and 200mL of absolute ethanol and ultrasonically disperse for 30min, then add 30g of titanium powder under stirring to obtain a mixed slurry; transfer the obtained mixed slurry to a ball mill jar, add 180g of zirconia ceramic Ball mill the beads, mill at 300r / min for 2.5h, use a rotary evaporator at 65r / min and 75°C to remove the absolute ethanol in the slurry after ball milling to obtain a powder; put the obtained powder in a vacuum oven at 90°C Dry for 10 hours to obtain dried powder; put the obtained dried powder in...

Embodiment 2

[0043] A low-content few-layer graphene-reinforced titanium-based composite material, based on the mass of the composite material as 100%, its composition and the mass fraction of each component: few-layer graphene powder 0.050% and titanium powder 99.950% .

[0044] The preparation steps of the low-content few-layer graphene-reinforced titanium-based composite material described in this implementation are as follows:

[0045] Mix 0.015g of few-layer graphene powder and 200mL of absolute ethanol and ultrasonically disperse for 20min, then add 30g of titanium powder under stirring to obtain a mixed slurry; transfer the obtained mixed slurry to a ball mill jar, add 150g of zirconia ceramic Ball mill the beads, mill at 350r / min for 2.5h, use a rotary evaporator at 65r / min and 75°C to remove the absolute ethanol in the slurry after ball milling to obtain a powder; put the obtained powder in a vacuum oven at 100°C Dry for 12 hours to obtain dried powder; put the obtained dried pow...

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Abstract

The invention relates to a low-content few-layer graphene intensified titanium-based composite material and a preparation method, and belongs to the technical field of metal-based composite materials. The composite material has excellent tensile mechanical performance and is intensified through the characteristics of few-layer graphene, and the few-layer graphene is distributed in the composite material uniformly in the fixed direction. The preparation method includes the steps that few-layer graphene powder is mixed with absolute ethyl alcohol at first, and titanium powder is added to the mixture while the mixture is stirred, so that mixed slurry is obtained; the mixed slurry is subjected to ball grinding, the absolute ethyl alcohol in the ball-grinded slurry is removed, and drying is conducted on the vacuum condition; the dried power is injected into a steel mold, then the steel mold is pressed and heated, and a rough blank is obtained after natural cooling; and the rough blank is heated and then hot-rolled, the blank is cooled in air after being rolled, and then the low-content few-layer graphene intensified titanium-based composite material is obtained. The method is simple in process and high in repeatability.

Description

technical field [0001] The invention relates to a low-content few-layer graphene-reinforced titanium-based composite material and a preparation method thereof, belonging to the technical field of metal-based composite materials. Background technique [0002] Titanium and titanium alloys have very outstanding specific strength and specific elastic modulus, are widely used in aerospace and automotive industries, and have a very strong application potential in improving the thrust-to-weight ratio of aero-engines and reducing energy consumption. At the same time, the development and preparation of titanium matrix composites (TiMCs) is of great significance to continue to improve the mechanical properties of titanium and titanium alloys. 。 At present, discontinuously reinforced TiMCs are usually prepared by powder metallurgy technology, and particle reinforcement or short whisker reinforcement is carried out by in-situ self-generated TiC or TiB. Although the interface between the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/10C22C1/05C22F1/18
CPCC22C1/05C22C1/1084C22C14/00C22F1/183
Inventor 张洪梅穆啸楠才鸿年范群波吴焰傅铸杰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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