MAX reinforced magnesium-based composite material and preparation method thereof

A composite material and alloy technology, applied in the field of cermet materials, can solve the problems of performance failure, limitation, and the performance of MAX reinforced magnesium matrix composite materials cannot meet the application requirements, and achieve the effect of dense structure, improved hardness and strength, and uniform composition.

Inactive Publication Date: 2021-08-27
河北润侠新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the MAX-reinforced magnesium-based composites produced under the existing technology are difficult to effectively control the structure, and are prone to performance failure problems, which eventually lead to the failure of the performance of the MAX-reinforced magnesium-based composites to meet the application requirements, thus being subject to certain restrictions. limit

Method used

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  • MAX reinforced magnesium-based composite material and preparation method thereof
  • MAX reinforced magnesium-based composite material and preparation method thereof
  • MAX reinforced magnesium-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0071] This embodiment provides a kind of MAX reinforced magnesium-based composite material, made of Ti 2 AlC or Ti 3 AlC 2 The metal ceramic phase of Mg or Mg alloy consists of a cermet phase and a metal phase of Mg or Mg alloy, and the cermet phase exists in the form of a three-dimensional porous framework in the MAX reinforced magnesium-based composite material. The specific performance is Ti 2 AlC or Ti 3 AlC 2 The cermet phase penetrates three-dimensionally, the metal phase and the ceramic phase are continuous, and the interface is well wetted, which can avoid the problem of performance failure and ensure stable performance.

[0072] Wherein, the porosity of the three-dimensional porous framework is 10%-70%, the diameter of the three-dimensional porous framework unit ring is 10nm-100μm, and the diameter of the metal phase of the Mg or Mg alloy is 10nm-100μm. The Ti 2 AlC or Ti 3 AlC 2 The volume fraction of the cermet phase is not less than 30%. In order to obtai...

Embodiment 2

[0075] This embodiment provides a method for making a MAX reinforced magnesium-based composite material, the method comprising:

[0076] Step 1, provide base powder, described base powder is Ti 2 AlC powder or Ti 3 AlC 2 powder;

[0077] Step 2, using the base powder to manufacture a three-dimensional porous framework;

[0078] Step 3, infiltrating the melted Mg or Mg alloy into the three-dimensional porous framework to form the MAX reinforced magnesium-based composite material.

[0079] Wherein, said step two includes:

[0080] Step S21 , making and forming a three-dimensional porous skeleton body by means of a compression molding process.

[0081] That is, placing the base powder in a compression mold;

[0082] Apply pressure to 3MPa-10MPa;

[0083] Keep the constant pressure for 0.1h-2h to form the three-dimensional porous skeleton green body.

[0084] In this embodiment, the Ti in the material 2 AlC or Ti 3 AlC 2 The volume fraction of will increase and decrease...

Embodiment 3

[0098] This embodiment provides a method for making a MAX reinforced magnesium-based composite material, the method comprising:

[0099] Step 1, provide 20g of base powder, the base powder is Ti 2 AlC powder.

[0100] Step 2, using the base powder to manufacture a three-dimensional porous framework. include:

[0101] Step S21 , making and forming a three-dimensional porous skeleton body by means of a compression molding process.

[0102] That is, the basic powder is evenly put into the mold;

[0103] Adjust the stroke of the hydraulic press to the fully open state, place the mold with the basic powder at the center of the hydraulic press, pressurize to 4MPa, keep the constant pressure for 0.2h to remove the pressure, and open the mold again to obtain a three-dimensional porous skeleton green body.

[0104] Step S22, sintering the green body to form the three-dimensional porous skeleton.

[0105]That is, the three-dimensional porous skeleton body was dried naturally at roo...

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Abstract

The embodiment of the invention discloses an MAX reinforced magnesium-based composite material and a manufacturing method thereof. The material is composed of a metal ceramic phase of Ti2AlC or Ti3AlC2 and a metal phase of Mg or Mg alloy, and the metal ceramic phase exists in the MAX reinforced magnesium-based composite material in the form of a three-dimensional porous framework. The method comprises the steps that firstly, basic powder is provided, and the basic powder is Ti2AlC powder or Ti3AlC2 powder; secondly, the three-dimensional porous framework is manufactured by using the basic powder; and thirdly, molten Mg or Mg alloy is permeated into the three-dimensional porous framework, and the MAX reinforced magnesium-based composite material is formed. In the MAX reinforced magnesium-based composite material disclosed by the invention, the metal ceramic phase exists in the form of the three-dimensional porous framework, and structurally shows that the ceramic phase and the metal phase are correspondingly continuous and three-dimensionally interlocked in all directions, so that the problem of performance failure can be avoided, and the performance is ensured to stably reach the standard.

Description

technical field [0001] The invention relates to the technical field of cermet materials, in particular to a MAX reinforced magnesium-based composite material and a manufacturing method thereof. Background technique [0002] As a light-weight and high-strength structural material, ceramics have very high tensile strength, compressive strength, elastic modulus, hardness, etc., and have stable physical properties, wear resistance, acid and alkali resistance, and corrosion resistance. However, due to It is brittle, has low impact resistance, is fragile, and is difficult to process, so it is difficult to be widely used in some important fields. As a metal, magnesium is another lightweight structural material, which has high specific strength and specific stiffness, excellent casting performance and machining performance, and has broad application prospects. However, the low elastic modulus of magnesium alloys, limited high-temperature strength, wear resistance, and poor corrosio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C32/00C22C23/00C22C29/06C22C1/10B22D23/04
CPCC22C32/0052C22C23/00C22C29/06C22C1/1015C22C1/1036C22C1/1068B22D23/04C22C1/1021
Inventor 刘景申王洋
Owner 河北润侠新材料科技有限公司
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