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Metal-matrix composite material and preparation method thereof

A composite material and metal-based technology, applied in the field of improving the bonding strength of graphene and metal interface in metal-based composite materials, can solve the problems of failure of the reinforcement phase, failure of the reinforcement phase to play a bearing role, poor affinity, etc., and improve the bonding strength. Effect

Inactive Publication Date: 2016-08-17
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength of the two-phase interface between the metal matrix and graphene is not easy to control. For example, in the aluminum matrix, aluminum and carbon easily react to form a brittle phase, aluminum carbide, which breaks first during the loading process, causing the reinforcement phase to fail; The material has poor chemical affinity with carbon, and cannot form an interface bond with graphene, which can easily cause interface debonding, and the reinforcing phase cannot play a supporting role

Method used

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  • Metal-matrix composite material and preparation method thereof
  • Metal-matrix composite material and preparation method thereof
  • Metal-matrix composite material and preparation method thereof

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Experimental program
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Embodiment 1

[0034] In this embodiment, the metal matrix composite material is based on aluminum, and graphene modified with titanium carbide is used as a reinforcement.

[0035] The preparation method of the graphene modified by titanium carbide is as follows:

[0036] (1) Take a certain amount of graphene powder, utilize NaCl:KCl=1:1 as mixed salt, utilize 300 mesh titanium powder as the titanium source of titanium carbide coating, three kinds of powders are according to molar ratio 5:5: 1. Put it in a ball mill jar and mill it for 10 hours, the ball milling speed is 150r / min, and the ball-to-material ratio is 1:1 to obtain the mixture;

[0037] (2) Place the mixture obtained in step (1) in a platinum crucible, seal it, and then place it under an argon protective atmosphere at 850° C. for 1 hour and then cool it with the furnace;

[0038] (3) Put the crucible and the reacted product in water, heat until the mixed salt is completely dissolved, then separate, wash and dry the solid to obt...

Embodiment 2

[0044] In this embodiment, the metal matrix composite material is based on copper, and graphene modified with vanadium carbide is used as a reinforcement.

[0045] The preparation method of the graphene modified by vanadium carbide is as follows:

[0046] (1) Take a certain amount of graphene powder, which is exactly the same as the graphene powder in embodiment 1, utilize NaCl:KCl=1:1 as mixed salt, utilize 300 mesh vanadium powder as vanadium carbide coating Vanadium source, the three powders are placed in a ball mill jar for ball milling for 10h according to the molar ratio of 10:10:1, the ball milling speed is 150r / min, and the ball-to-material ratio is 1:1 to obtain a mixture;

[0047] (2) Put the mixture obtained in step (1) into a platinum crucible, seal it, and then place it under an argon protective atmosphere at 1000° C. for 4 hours and then cool it with the furnace;

[0048] (3) Put the crucible and the reacted product in water, heat until the mixed salt is complet...

Embodiment 3

[0054] In this embodiment, the metal matrix composite material is based on copper, and graphene modified with chromium carbide is used as a reinforcement.

[0055] The preparation method of the chromium carbide modified graphene is as follows:

[0056] (1) Take a certain amount of graphene powder, which is exactly the same as the graphene powder in embodiment 1, utilize NaCl:KCl=1:1 as mixed salt, utilize 300 order chromium powders as chromium carbide coating The chromium source, three kinds of powders are placed in the ball mill tank for ball milling for 10h according to the molar ratio of 10:10:1, the ball milling speed is 150r / min, and the ball-to-material ratio is 1:1 to obtain the mixture;

[0057] (2) Put the mixture obtained in step (1) into a platinum crucible, seal it, and then place it under an argon protective atmosphere at 950° C. for 4 hours and then cool it with the furnace;

[0058] (3) Put the crucible and the reacted product in water, heat until the mixed sal...

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Abstract

The invention provides a metal matrix composite material, which uses metal as a matrix and uses graphene modified on the surface of carbide as a reinforcement. Due to the surface modification of the carbide, the interface bonding strength between the metal matrix and the graphene can be adjusted. For example, when the chemical affinity between graphene and the metal matrix is ​​too strong and an excessive reaction occurs, resulting in an excessively strong interface bond, the carbide can be used as a diffusion barrier to avoid the overreaction and weaken the interface bond; When the interfacial affinity is weak, the carbide can be used as a transition layer to promote interfacial wetting and improve interfacial bonding force.

Description

technical field [0001] The invention relates to the technical field of metal matrix composite materials, in particular to a method for improving the bonding strength of graphene and metal interfaces in metal matrix composite materials. Background technique [0002] Metal matrix composites are one of the high-performance materials that have developed rapidly in recent years. By adding various reinforcements to metal materials, good thermal conductivity and electrical conductivity can be obtained. In addition to impact resistance, corrosion resistance, fatigue resistance and fracture toughness, it also has high strength, high rigidity, strong wear resistance and low thermal expansion coefficient. high-performance composite materials. The development of metal matrix composites has played a vital role in promoting the high-tech modernization of military and civilian fields in various countries around the world. [0003] Graphene is a new type of two-dimensional carbon nanomate...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C1/10C22C9/00C22C21/00
CPCC22C1/05C22C1/101C22C1/1084C22C9/00C22C21/00
Inventor 黄庆司晓阳陈凡燕李勉都时禹
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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