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Method for preparing directionally-grown TiBw reinforced titanium matrix composite based on graphene templating

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 of decreased load transfer strengthening effect of reinforcement, reduced mechanical properties of composite materials, texture effect of composite materials, etc., to achieve excellent dynamic mechanical properties , maintain structural integrity, high resistance to impact damage

Active Publication Date: 2021-07-13
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 directionally-grown TiBw reinforced titanium matrix composite based on graphene templating
  • Method for preparing directionally-grown TiBw reinforced titanium matrix composite based on graphene templating
  • Method for preparing directionally-grown TiBw reinforced titanium matrix composite based on graphene templating

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Effect test

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 a directionally-grown TiBw reinforced titanium matrix composite based on graphene templating, and belongs to the technical field of titanium matrix composite preparation. A mixed solution of phosphoric acid and potassium permanganate and a sensitizing solution prepared from SnCl2, HCl and water are used for sequentially carrying out acidizing treatment and sensitizing treatment on the GR; the sensitized GR, boron-containing substance nanometer powder and absolute ethyl alcohol are subjected to uniform ultrasonic dispersion, then titanium-based metal powder is added, uniform mixing and drying are conducted, and boron-containing substance @GR / Ti-based composite powder is obtained; after the boron-containing substance @GR / Ti-based composite powder is sintered through an SPS technology, a sintered blank is subjected to thermal deformation through a thermal compression technology or a hot extrusion deformation technology or a hot rolling technology, and the titanium matrix composite reinforced by the directionally-grown complete-structure TiBw is obtained. The method is easy to operate, high in universality and strong in practicability, and the prepared directionally-grown TiBw reinforced titanium matrix composite shows excellent dynamic mechanical properties and has a very good application prospect.

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 Applications(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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