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Metal-based composite material as well as preparation method and application thereof

A composite material and metal-based technology, applied in the direction of nitrogen and non-metallic compounds, nitrogen-metal/silicon/boron binary compounds, non-metallic elements, etc., can solve problems such as no corresponding MXene

Active Publication Date: 2018-07-13
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there are few studies on coating MXene materials on metal surfaces, and there are only few documents, such as CN107001051A, etc., which mention the method of preparing MXene materials and discuss their photoelectric properties and use as photodetectors, touch screens, electromagnetic The application potential of electrical devices such as reflective materials has not been reported to use MXene as a coating to prepare metal matrix composite materials. Those skilled in the art need to further study the possibility of MXene materials as corrosion-resistant coating materials , Prepare a composite material coated with MXene material coating on the surface and develop the corresponding preparation method

Method used

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  • Metal-based composite material as well as preparation method and application thereof
  • Metal-based composite material as well as preparation method and application thereof
  • Metal-based composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The metal matrix composite material 1 was prepared by the following steps:

[0063] Step (1), use a ball mill to convert 10g of structural formula into Ti 3 AlC 2 The compound is pulverized and ground to a particle size of 80 μm, then placed in a corrosion-resistant polytetrafluoroethylene container, and 500 g of acidic etching solution containing 40 wt % lithium fluoride and hydrogen chloride is added to the container, wherein lithium fluoride and hydrogen chloride The molar ratio is 1:4, etched at 80°C for 12h, the Al element in the compound is completely removed, and the accordion-shaped Ti 3 C 2 The multilayer MXene material of the structural formula;

[0064] In step (2), the multilayer MXene material obtained in step (1) was rinsed with N-methylpyrrolidone containing 5wt% sodium cholate to remove residual impurities, and then it was vacuum-dried, and then dispersed in a layer containing 10wt% In the petroleum ether of sodium p-butylbenzene sulfonate, obtain mu...

Embodiment 2

[0069] The metal matrix composite material 2 was prepared by the following steps:

[0070] The only difference with Example 1 is that the structural formula of the compound added in the step (1) is Ti 3 AsCN, the obtained multilayer MXene material has Ti 3 The structural formula of CN.

[0071] Example 2 A metal matrix composite material 2 was obtained.

Embodiment 3

[0073] The metal matrix composite material 3 was prepared by the following steps:

[0074] The only difference with Example 1 is that the structural formula of the compound added in step (1) is Nb 2 AlC, the resulting multilayer MXene material has Nb 2 For the structural formula of C, the amount of the acidic etching solution added is 100 g and the acidic etching solution is a hydrofluoric acid solution with a concentration of 20 wt%.

[0075] Example 3 A metal matrix composite material 3 was obtained.

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Abstract

The invention relates to a metal-based composite material which comprises a metal substrate and an MXene material membrane layer, wherein the MXene material membrane layer is arranged on the bottom surface of the metal substrate in a wrapping layer and is of a structural formula Mn+1Xn(Ts); an MXene material is prepared by removing A from a compound of a structural formula Mn+1AXn; in the formula,M, A and X are respectively three different elements; n is a positive integer; Ts is an end sealing group on the surface of the MXene material. The surface of the metal-based composite material provided by the invention is uniformly wrapped with the MXene material membrane layer, the number of sheet layers of the MXene material is only 1-15, the wrapping thickness is smaller than 250 nm, the thickness is uniform, the wrapped surface is smooth and flat, surface defects can be avoided, and the corrosion velocity of the obtained metal-based composite material is very low, that is, is only about0.06% of that of a conventional metal substrate; the invention further discloses a novel method for preparing the metal-based composite material, and by adopting the method, no complex instrument equipment is needed, and the metal-based composite material can be conveniently and rapidly prepared.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a metal matrix composite material and its preparation method and application. Background technique [0002] Metal materials are widely used due to their excellent electrical conductivity, good ductility and high mechanical strength. However, the research on corrosion-resistant metal materials has not made great progress. Traditionally used to improve the corrosion resistance of metal materials It mainly includes covering the metal surface with a dense coating and adding corrosion-resistant additives to the metal material components. These two methods for preparing metal matrix composites have their own advantages and disadvantages. Adding corrosion-resistant additives can greatly strengthen the metal material. Its own corrosion resistance, especially chemical corrosion resistance, but it has no obvious protective effect on electrochemical corrosion, and it is inconvenient to pr...

Claims

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Application Information

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IPC IPC(8): C01B32/935C01B32/921C01B32/90C01B32/914C01B32/907C01B21/06C01B21/076C01B21/082C25D15/00
CPCC01B21/0612C01B21/0617C01B21/076C01B21/0828C01P2004/04C25D15/00
Inventor 王钰段春阳李萌启
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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