Ni-doped Ti3AlC2/Cu composite material for inhibiting decomposition of Ti3AlC2 and preparation method of Ni-doped Ti3AlC2/Cu composite material

A composite material and energy spectrum analysis technology, applied in the field of copper-based composite material preparation, can solve the problems that ceramics cannot give full play to their performance advantages, limit the promotion and application of materials, and the interface bonding strength is not high, so as to improve the mechanical properties of materials and significantly reduce holes , the effect of inhibiting pyrolysis

Active Publication Date: 2021-10-19
XI AN JIAOTONG UNIV
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Problems solved by technology

But since Ti 3 AlC 2 / Cu composites during the preparation process, when the sintering temperature exceeds 600 °C, the Ti 3 AlC 2 The ceramic will be decomposed by heat, the Al element will diffuse, and the organization will be Ti 3 AlC 2 The phase transforms into TiC phase, the ternary layered structure is destroyed, and the Ti in the composite structure 3 AlC 2 Ceramics cannot play its excellent performance advantages
In addition, Ti 3 AlC 2 The interface bonding strength of / Cu is not high, and the wettability is poor, which limits the promotion and application of the material

Method used

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  • Ni-doped Ti3AlC2/Cu composite material for inhibiting decomposition of Ti3AlC2 and preparation method of Ni-doped Ti3AlC2/Cu composite material
  • Ni-doped Ti3AlC2/Cu composite material for inhibiting decomposition of Ti3AlC2 and preparation method of Ni-doped Ti3AlC2/Cu composite material
  • Ni-doped Ti3AlC2/Cu composite material for inhibiting decomposition of Ti3AlC2 and preparation method of Ni-doped Ti3AlC2/Cu composite material

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preparation example Construction

[0041] The present invention suppresses Ti 3 AlC 2 Ni-doped Ti for decomposition 3 AlC 2 The preparation method of / Cu composite material, comprises the following steps:

[0042] S1, the Ti 3 AlC 2 The powder, Ni powder and Cu powder are proportioned according to a certain composition ratio, and poured into a ball mill tank for ball milling;

[0043] Ti 3 AlC 2 The composition ratio of powder, Ni powder and Cu powder is: Ti 3 AlC 2 The powder composition is 10Vol.% to 45Vol.%, the Ni powder composition is 8Vol.% to 10Vol.%, and the Cu powder composition is 45Vol.% to 82Vol.%.

[0044] Ti 3 AlC 2 The particle size of the powder is 150-300 mesh, the purity is 97.5%-99.5%, and the shape and structure are irregular; the particle size of the Ni powder is 250-325 mesh, the purity is 98.5%-99.9%, and the water atomized spherical powder; the Cu powder The particle size is 325-400 mesh, the purity is 98.5%-99.9%, and it is water-atomized spherical powder.

[0045] The mill...

Embodiment 1

[0056] Ti 3 AlC 2 Ni-doped Ti with a content of 10Vol.% 3 AlC 2 / Cu composite material pantograph slide plate

[0057] 1) First, 10Vol.% Ti 3 AlC 2 Powder, 8Vol.% Ni powder and 82Vol.% Cu powder are mixed and poured into a ball mill jar for ball milling; Ti 3 AlC 2 The particle size of the powder is 150 mesh, the purity is 97.5%, and the shape structure is irregular; the particle size of the Ni powder is 250 mesh, the purity is 98.5%, and the water atomized spherical powder; the particle size of the Cu powder is 325 mesh, the purity is 98.5%. Water atomized spherical powder. The ball milling parameters are: the volume of the ball milling tank is 0.5L, the ball milling time is 1 hour, the ball milling speed is 150, the ball-material ratio (mass ratio) is 5:1, the process control agent is ethanol solution, and the process control agent ratio is 1:1, The grinding ball is made of agate grinding ball.

[0058]2) Perform EDS energy spectrum analysis on the ball-milled powde...

Embodiment 2

[0062] Ti 3 AlC 2 Ni-doped Ti with a content of 25Vol.% 3 AlC 2 / Cu composite electrical contacts

[0063] 1) First, 25Vol.% Ti 3 AlC 2 Powder, 8.5Vol.% Ni powder and 66.5Vol.% Cu powder are mixed and poured into a ball mill jar for ball milling; Ti 3 AlC 2 The particle size of the powder is 200 mesh, the purity is 98.5%, and the shape structure is irregular; the particle size of the Ni powder is 325 mesh, the purity is 99.5%, and the water atomized spherical powder; the particle size of the Cu powder is 400 mesh, the purity is 99.5%. Water atomized spherical powder. The ball milling parameters are: the volume of the ball milling tank is 1L, the ball milling time is 2 hours, the ball milling speed is 200rpm, the ball-to-material ratio (mass ratio) is 8:1, the process control agent is ethanol solution, and the process control agent ratio is 1:1. The ball is made of agate mill ball.

[0064] 2) Perform EDS energy spectrum analysis on the ball-milled powder to observe wh...

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Abstract

The invention discloses a Ni-doped Ti3AlC2 / Cu composite material for inhibiting decomposition of Ti3AlC2 and a preparation method of the Ni-doped Ti3AlC2 / Cu composite material. Ni elements with different contents are doped in a Cu matrix to inhibit diffusion decomposition of Ti3AlC2 ceramic at high temperature, and then the Ni-doped Ti3AlC2 / Cu composite material with undecomposed Ti3AlC2 is obtained through ball milling, cold pressing, sintering, sintering, re-pressing and re-sintering. According to the preparation method, after the Ni element is added for doping, the structure of the Ti3AlC2 / Cu composite material is composed of Ti3AlC2, TiCx, NixAl, NixTi and an alpha-copper matrix, along with the increase of the volume fraction of the Ti3AlC2 ceramic, the structure morphology is converted into net-shaped continuous distribution from fine dispersed distribution of a reinforcing phase, the number and the volume of holes are reduced compared with those of a traditional Ti3AlC2 / Cu composite material, and especially when the volume fraction of Ti3AlC2 is larger than 40%, the holes are obviously reduced. NixAl and NixTi compounds are generated at the reinforced phase grain boundary after doping of the Ni element, diffusion of the Al element is inhibited, high-temperature decomposition of the Ti3AlC2 ceramic is effectively inhibited, and a feasible preparation method is provided for large-scale popularization of the Ti3AlC2 / Cu composite material.

Description

technical field [0001] The invention belongs to the technical field of preparation of copper-based composite materials, in particular to a method for inhibiting Ti 3 AlC 2 Ni-doped Ti for decomposition 3 AlC 2 / Cu composite material and its preparation method. Background technique [0002] Ternary layered ceramic MAX phase compound (M n+1 AX n , wherein M is a transition metal element, A is mainly a III or IV group element, X is a C or N atom, n=1, 2, 3, 4, 5, etc.), because of its multi-level structure (electronic structure, crystal structure and Microstructure), unique chemical bonds and properties of both metal and ceramics, with high modulus, excellent thermal conductivity, microscopic plastic deformation ability and high damage tolerance. And because the MAX phase ceramic has a layered structure and has a certain degree of self-lubricating properties, it has great application prospects in friction materials. Relevant studies have shown that the mechanical propert...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C9/00C22C32/00B22F3/16
CPCC22C1/05C22C9/00C22C32/0052B22F3/16
Inventor 王怡然翟文彦李鸿江高义民
Owner XI AN JIAOTONG UNIV
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