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Al-coated Al3Ti intermetallic compound nanoparticles and preparation method thereof

A technology of intermetallic compounds and nanoparticles, applied in metal material coating process, sputtering plating, vacuum evaporation plating, etc., can solve the difficulty of adding nanoparticles, and the range of shape and size of ceramic nanoparticles is not wide , Dimensional accuracy and dimensional uniformity are not high, to achieve the effect of improving performance, high dimensional accuracy and dimensional uniformity, and achieving uniform distribution

Active Publication Date: 2022-04-12
SHANGHAI JIAO TONG UNIV +2
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at the fact that the range of shape and size of ceramic nanoparticles is not wide, and the size accuracy and size uniformity are not high in the existing particle-reinforced metal matrix composite material preparation technology. distribution problem, a proposed Al-coated Al 3 Ti intermetallic compound nanoparticles and preparation method thereof, prepared to have the characteristics of wide variation range of shape and size, high size accuracy and size uniformity, and covered by metal Al without surface oxide film

Method used

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  • Al-coated Al3Ti intermetallic compound nanoparticles and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] This embodiment uses a multimpoically magnetron sputtering apparatus, which controls pure Al target and pure Ti target by two separate cathodes, respectively, and specific steps include:

[0024] Step 1) Pump the air chamber of the vacuum chamber to 10 -3 After the PA or less, the purified Al substrate in the vacuum chamber was heated (and held at 600 ° C throughout the deposited plating film), sputtered on the Al substrate, a Al-deposition of 100 nm;

[0025] Step 2) The charge is charged and the pressure is 6 × 10 -1 PA, deposition Al layer on the Al transition layer; then charge Ar gas and maintain its pressure of 6 × 10 -1 PA, deposition Al in the Al layer 3 The two-phase structural layer composed of Ti and Al, controlling the Ti content in the two phase structures, the thickness of the two-phase structure layer in the two-phase structure layer by adjusting the power of the Al target and Ti target, and the thickness of the Al layer and the two phase structures is contro...

Embodiment 2

[0029] In this example, the substrate temperature is maintained at 625 ° C, and the thickness of the two phase structures is 100 nm, the thickness of the multilayer structure composite film is 10 nm, and the total thickness of the multilayer structure composite film is the thickness of the multilayer structure composite film. About 10 μm, a cylindrical Al is obtained by Al-coated and bonded together 3 Ti nanoparticles, Al3 The average diameter of Ti nanoparticles is 20 nm, and the length is 100 nm.

Embodiment 3

[0031] In this example, the substrate temperature is maintained at 650 ° C, and the thickness of the two phase structures is 30 nm, the thickness of the Al layer is 10 nm, and the total thickness of the multilayer structure composite film is controlled by the control of the deposition of the plating time. About 10 μm, is obtained by Allax Allax Al, which is coated and bonded together 3 Ti nanoparticles, Al 3 The average diameter and length of Ti nanoparticles were 30 nm.

[0032] In summary, the present invention passes through a huge melting point temperature and moisture but insoluble Al. 3 Ti and Al-specific proportion of two-phase material combination, especially the prior art gap deposited by the substrate temperature at a temperature close to Al melting point, obtained with Al 3 Ti columnar crystal and Al separated two-phase structural layers, further use only Al layer block two-phase structural layer Al 3 The multilayer structure composite film method of Ti columnar crystal...

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Abstract

According to the Al-coated Al3Ti intermetallic compound nano-particle material and the preparation method thereof, a physical vapor deposition coating technology is adopted, a method of co-deposition of two components of Al and Ti is adopted, and the ratio of the two components of Al and Ti and the temperature of a base material close to the melting point of Al are controlled, so that the Al-coated Al3Ti intermetallic compound nano-particle material is obtained. Separating and growing Al3Ti and Al phases at a high temperature; and preparing a multi-layer structure composite film with a two-phase structure layer consisting of Al3Ti and Al and an Al layer which are alternately overlapped with each other. The Al3Ti nano-particle material which is wide in shape and size change range and coated with Al on the surface is prepared through the method, the Al3Ti nano-particle material can be easily added into molten metal, particle aggregation is not prone to being generated, the composite material with nano-particles evenly dispersed can be obtained, and the performance of the metal-based composite material, especially the performance of the Al-based composite material, is remarkably improved.

Description

Technical field [0001] The present invention relates to a technique in the field of metal base composite nanomaterials, which is specifically a Allant Al. 3 Ti intermetallic compound nanoparticles and preparation methods thereof. Background technique [0002] Particle-enhanced metal-based composite materials have become more and more widely used in modern industries due to performance advantages. However, when the diameter is reduced to the nano-magnitude, the surface of the particles increases, the surface adsorption and pollution makes the particles difficult to add Among the metal melt and a uniform dispersion is obtained, and the key difficulties and problems and problems that are urgently needed in the preparation of nanoparticles reinforced metal matrix composites. The prior art uses a metal to improve the particles in improving the melting of micron-shaped particles into the metal melt, but this method is difficult to use for nano-level particles, why is the diameter of na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/16C23C14/35B22F9/12
Inventor 马冰洋尚海龙李荣斌夏奕杰李戈扬
Owner SHANGHAI JIAO TONG UNIV
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