an inhibitor of ti 3 alc 2 Decomposition with ni doping ti 3 alc 2 /cu composite material and preparation method thereof

A composite material and energy spectrum analysis technology, applied in the field of copper matrix composite material preparation, can solve the problems such as the inability of ceramics to exert their performance advantages, limit the promotion and application of materials, and damage the ternary layered structure, so as to improve the mechanical properties of materials, pores and holes. Reduces significant, porosity-reducing effects

Active Publication Date: 2022-06-07
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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  • an inhibitor of ti <sub>3</sub> alc <sub>2</sub> Decomposition with ni doping ti <sub>3</sub> alc <sub>2</sub> /cu composite material and preparation method thereof
  • an inhibitor of ti <sub>3</sub> alc <sub>2</sub> Decomposition with ni doping ti <sub>3</sub> alc <sub>2</sub> /cu composite material and preparation method thereof
  • an inhibitor of ti <sub>3</sub> alc <sub>2</sub> Decomposition with ni doping ti <sub>3</sub> alc <sub>2</sub> /cu composite material and preparation method thereof

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preparation example Construction

[0041] A kind of inhibiting Ti of the present invention 3 AlC 2 Ni-Doped Ti for Decomposition 3 AlC 2 The preparation method of / Cu composite material includes the following steps:

[0042] S1. Ti 3 AlC 2 The powder, Ni powder and Cu powder are proportioned according to a certain proportion, and poured into the ball milling 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 10 Vol.% to 45 Vol.%, the Ni powder composition is 8 Vol.% to 10 Vol.%, and the Cu powder composition is 45 Vol.% to 82 Vol.%.

[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%, water atomized spherical powder; The particle size is 325-400 mesh, the purity is 98.5%-99.9%, and the spherical powder is water atomized.

[0045] The parameters of ...

Embodiment 1

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

[0057] 1) First, put 10Vol.% Ti 3 AlC 2 Powder, 8Vol.% Ni powder and 82Vol.% Cu powder are mixed and poured into a ball mill for ball milling; Ti 3 AlC 2 The particle size of the powder is 150 mesh, the purity is 97.5%, and the shape and structure are 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 mill tank is 0.5L, the ball milling time is 1 hour, the ball milling speed is 150, the ball-to-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 adopts agate grinding ball.

[0058]2) Perform EDS analysis on the ball-milled powder to observe whether the...

Embodiment 2

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

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

[0064] 2) Perform EDS analysis on the ball-milled powder to observ...

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Abstract

The invention discloses a Ni-doped Ti3AlC2 / Cu composite material for inhibiting the decomposition of Ti3AlC2 and a preparation method thereof. The Cu matrix is ​​doped with Ni elements of different contents to suppress Ti 3 AlC 2 Ceramics are diffused and decomposed at high temperature, and then obtained by ball milling, cold pressing, sintering, sintering, repressing and refiring 3 AlC 2 Undecomposed Ni-doped Ti 3 AlC 2 / Cu composite material. After the present invention is doped by adding Ni element, Ti 3 AlC 2 / Cu composites composed of Ti 3 AlC 2 、TiC x 、Ni x Al, Ni x Ti and α‑Cu matrix composition, with Ti 3 AlC 2 With the increase of the volume fraction of the ceramics, the microstructure changes from the fine dispersed distribution of the reinforced phase to the continuous distribution of the network, and the number and volume of the pores are compared with those of the traditional Ti 3 AlC 2 / Cu composites are reduced, especially when the Ti 3 AlC 2 When the volume fraction is greater than 40%, the voids are significantly reduced. Ni is formed at the grain boundary of the reinforcement phase after doping with Ni x Al and Ni x Ti compound, which inhibits the diffusion of Al element, effectively inhibits Ti 3 AlC 2 Pyrolysis of ceramics, Ti 3 AlC 2 The large-scale promotion of / Cu composites provides a feasible preparation method.

Description

technical field [0001] The invention belongs to the technical field of copper-based composite material preparation, and in particular relates to a method for inhibiting Ti 3 AlC 2 Ni-Doped Ti for Decomposition 3 AlC 2 / Cu composite material and preparation method thereof. Background technique [0002] Ternary layered ceramic MAX phase compound (M n+1 AX n , where 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 both the properties of metals 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 mec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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