Method for preparing directional growth tibw-reinforced titanium matrix composites based on graphene template

A titanium-based composite material and directional growth technology, which is applied in the field of titanium-based composite material preparation, can solve the problems such as the decrease of reinforcement load transfer strengthening effect, the reduction of mechanical properties of composite materials, and the texture effect of composite materials, and achieve excellent dynamic mechanical properties. , The effect of maintaining structural integrity and high resistance to impact damage

Active Publication Date: 2022-04-22
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are very limited control methods for the arrangement of TiBw in TiBw / TiMCs. The TiBw tends to the matrix deformation direction mainly through large plastic deformation methods such as rolling or hot extrusion, but the composite material has a texture effect during the deformation process. And TiBw breaks, and the length-to-diameter ratio drops sharply, which causes the load transfer strengthening effect of the reinforcement to decrease, thereby reducing the mechanical properties of the composite material.

Method used

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  • Method for preparing directional growth tibw-reinforced titanium matrix composites based on graphene template
  • Method for preparing directional growth tibw-reinforced titanium matrix composites based on graphene template
  • Method for preparing directional growth tibw-reinforced titanium matrix composites based on graphene template

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Embodiment 1

[0057] The steps of preparing directional growth TiBw-reinforced titanium-based composites based on graphene templates are as follows:

[0058] (1) Acidification-sensitization treatment of GR

[0059] 1.1) Combine GR and H 3 PO 4 Mix according to the volume ratio of 20:80, and obtain evenly dispersed GR-H after ultrasonic dispersion for 15 minutes 3 PO 4 suspension;

[0060] 1.2) According to GR and KMnO 4 1:1 mass ratio to GR-H 3 PO 4 Add 0.2g KMnO to the suspension 4 , stirring to make KMnO 4 After dissolving, place it in a water bath at 40°C for heating for 2 hours. After the reaction, filter, wash with deionized water, and dry in vacuum to obtain acidified GR;

[0061] 1.3) 19.3mL of pure water, 0.7mL of 37% concentrated hydrochloric acid and 0.76g of SnCl 2 Prepared as a sensitization solution; 0.2 g of acidified GR was added to 20 mL of sensitization solution and stirred for 1 hour, then filtered, washed with deionized water, and then vacuum-dried to obtain sen...

Embodiment 2

[0073] The steps of preparing directional growth TiBw-reinforced titanium-based composites based on graphene templates are as follows:

[0074] (1) Acidification-sensitization treatment of GR

[0075] 1.1) Combine GR and H 3 PO 4 Mix according to the volume ratio of 5:95, and obtain uniformly dispersed GR-H after ultrasonic dispersion for 60 minutes 3 PO 4 suspension;

[0076] 1.2) According to GR and KMnO 4 1:2 mass ratio to GR-H 3 PO 4 1.0 g KMnO was added to the suspension 4 , stirring to make KMnO 4 After dissolving, place it in a water bath at 60°C for heating reaction for 2 hours, filter and wash with deionized water after the reaction, and then dry in vacuum to obtain acidified GR;

[0077] 1.3) 98.25mL of pure water, 1.75mL of 37% concentrated hydrochloric acid and 1.90g of SnCl 2 Prepare a sensitization solution; add 0.5 g of acidified GR into 100 mL of sensitization solution and stir for 2 hours, then filter, wash with deionized water, and dry in vacuum to ...

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Abstract

The invention relates to a method for preparing directional growth TiBw reinforced titanium-based composite material based on graphene template, and belongs to the technical field of titanium-based composite material preparation. Using a mixed solution of phosphoric acid and potassium permanganate, made of SnCl 2 GR, HCl and water prepared sensitization solution to acidify and sensitize GR in sequence; after sensitized GR, boron-containing material nanopowder and absolute ethanol are dispersed evenly by ultrasonic, then titanium-based metal powder is added to mix evenly and Dry to obtain the boron-containing substance @GR / Ti-based composite powder; use SPS technology to sinter the boron-containing substance @GR / Ti-based composite powder, and then use the hot compression process, hot extrusion deformation process or hot rolling process to The sintered green body is subjected to thermal deformation treatment to obtain a TiBw reinforced titanium matrix composite material with directional growth and complete structure. The method of the invention is simple to operate, has high universality and strong practicability, and the prepared directional growth TiBw reinforced titanium-based composite material exhibits excellent dynamic mechanical properties and has good application prospects.

Description

technical field [0001] The invention relates to a method for preparing directional growth TiBw reinforced titanium-based composite material based on graphene template, and belongs to the technical field of titanium-based composite material preparation. Background technique [0002] Titanium Matrix Composite (TiMCs) has the advantages of high specific strength, low density, corrosion resistance and high temperature resistance, and is widely used in aerospace, shipbuilding and weapon industries. TiMCs applied in the impact load environment need to have a high resistance to impact damage, the so-called dynamic mechanical properties. Since the 1970s, with the increasing demand for weight reduction of armor and anti-armor weapon systems and the improvement of material dynamic performance testing methods, researchers have begun to pay attention to the preparation methods of TiMCs with excellent dynamic performance and the corresponding dynamic performance. deformation behavior. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05C22C14/00C22C32/00B22F3/105
CPCC22C1/05C22C14/00C22C32/0005B22F3/105B22F2003/1051
Inventor 张洪梅刘亮李云凯范群波程兴旺
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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