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A kind of titanium matrix composite material and preparation method thereof

A titanium-based composite material and titanium powder technology, applied in the field of composite materials, can solve problems such as insufficient material properties, and achieve the effects of shortening sintering time, improving mechanical properties, and high hardness

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

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Problems solved by technology

[0005] In view of the problems existing in the prior art, the technical problem to be solved by the present invention is to provide a titanium-based composite material and its preparation method, which can overcome the material properties caused by the easy agglomeration of existing single graphene or carbon nanotube reinforcements during the preparation process. Improve the insufficient problem to replace single graphene or carbon nanotubes as the reinforcement of titanium matrix composites

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  • A kind of titanium matrix composite material and preparation method thereof
  • A kind of titanium matrix composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] The mass ratio of carbon nanotube powder to graphene oxide is selected as 1:0 to prepare carbon nanotube reinforced titanium matrix composite:

[0032] 1. Add 0.084 g of carbon nanotube powder to absolute ethanol, and mix with an ultrasonic stirrer to obtain an alcohol solution of carbon nanotubes;

[0033] 2. Add 14 g of titanium powder to the alcohol solution of carbon nanotubes, the mass ratio of carbon nanotubes and titanium powder is 1: 167, and mix with an ultrasonic stirrer to obtain a mixed solution of carbon nanotubes and titanium powder;

[0034] 3. Stir the mixed solution of carbon nanotubes and titanium powder in a water bath stirrer at 60°C for about 4 hours until it is basically dry, and then dry it in an oven at 60°C for 12 hours to dry thoroughly to obtain a mixed powder of carbon nanotubes and titanium powder;

[0035] 4. Put the mixed powder obtained in step 3 into the mold of the hot-pressed sintering furnace, and then put it into the vacuum hot-press...

Embodiment 2

[0040] Select the mass ratio of carbon nanotube powder and graphene oxide as 1:0.1 to prepare graphene oxide / carbon nanotube reinforced titanium matrix composite:

[0041]1. Using the improved Hummers method, refer to the document 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, Vol. 4, No. 8, pp. 4806-4814), Preparation of Graphene Oxide Solutions. The actual graphene oxide content is 0.0084g, and the part taken out is diluted with absolute ethanol to obtain the diluted graphene oxide solution;

[0042] 2. Add 0.084 g of carbon nanotube powder to the diluted graphene oxide solution, so that the mass ratio of carbon nanotubes and graphene oxide is 1: 0.1, and mix with an ultrasonic stirrer to obtain graphene oxide / carbon nanotube mixture;

[0043] 3. Add 14g of titanium powder to the mixed solution of graphene oxide / carbon nanotubes, so that the mass ratio of carbon nanotu...

Embodiment 3

[0049] The mass ratio of carbon nanotube powder to graphene oxide is selected as 1:1 to prepare graphene oxide / carbon nanotube reinforced titanium matrix composite. The difference with embodiment 2 is:

[0050] In step 1, after the actual graphene oxide content is 0.084g, the part taken out is diluted with absolute ethanol to obtain the diluted graphene oxide solution, so that after adding 0.084g carbon nanotubes in step 2, carbon nanotubes and graphene oxide The mass ratio is 1:1.

[0051] From figure 1 (The picture marked with 1:1) It can be seen that in the mixed powder of this example, the distribution of carbon nanotube aggregates is significantly more uniform, the size of carbon nanotubes is smaller than that in Example 2, and the carbon nanotubes in the aggregates are more sparse. And in some regions, completely independent single carbon nanotubes have appeared, and the increase in the proportion of graphene oxide is conducive to the improvement of the dispersion of c...

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Abstract

The invention discloses a titanium-based composite material and a preparation method thereof. The preparation method of the titanium-based composite material is as follows: 1. diluting a graphene oxide solution with absolute ethanol; 2. adding carbon nanotube powder into the diluted graphene oxide solution Ultrasonic dispersion; 3. Add titanium powder to ultrasonic dispersion to obtain a mixed solution of graphene oxide / carbon nanotubes and titanium powder; 4. Completely dry in an oven to obtain a composite of graphene oxide / carbon nanotubes and titanium powder 5. Put the composite powder into the graphite mold of the hot-press sintering furnace, and sinter with heat preservation and pressure in the argon protection environment. Also provided is a titanium-based composite material prepared by the above preparation method. The present invention uses the mixture of graphene oxide / carbon nanotubes as the reinforcing body, which can effectively improve the agglomeration of the reinforcing body in the matrix, improve the dispersion 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 belongs to the technical field of composite materials, and in particular relates to a graphene oxide / carbon nanotube reinforced titanium-based composite material and a preparation method thereof. Background technique [0002] Due to a series of advantages such as high specific strength, high specific modulus, good high temperature performance and corrosion resistance, titanium-based composite materials are widely used in aerospace, automobile industry, medical equipment and other fields, and are the most promising structural materials and one of the functional materials. [0003] The selection of reinforcements with light weight, 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. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22C1/05C22C1/10
CPCC22C1/05C22C14/00C22C26/00C22C2026/002
Inventor 刘许旸刘经奇韦良晓胡宁吕学伟范刚强
Owner CHONGQING UNIV
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