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A kind of c/c-ni-cu composite material and its preparation method and application

A composite material, c-ni-cu technology, applied in the field of C/C-Ni-Cu composite material and its preparation, can solve the problem of restricting the performance of C/C-Cu composite material, unfavorable electrical conductivity, friction and wear performance, matrix Carbon graphitization degree is not high, to achieve the effect of improving catalytic graphitization efficiency, excellent wear resistance, and improving graphitization degree

Active Publication Date: 2021-04-06
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wettability of copper and carbon is poor, and the wetting angle of copper and carbon is close to 170° at 1200 °C
The diffusion coefficient of carbon in copper is almost zero, and carbon does not react chemically with copper, nor does it form any carbides, which becomes the bottleneck of improving the performance of C / Cu composite materials
[0004] In addition, the preparation of porous C / C-Cu composite materials is mostly achieved by chemical vapor deposition, and the degree of graphitization of the matrix carbon is not high.
Carbon materials with a low degree of graphitization are not conducive to the improvement of electrical conductivity and friction and wear properties, which restricts the further improvement of the performance of C / C-Cu composites

Method used

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  • A kind of c/c-ni-cu composite material and its preparation method and application
  • A kind of c/c-ni-cu composite material and its preparation method and application
  • A kind of c/c-ni-cu composite material and its preparation method and application

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preparation example Construction

[0032] The preparation method of C / C-Ni-Cu composite material of the present invention, comprises the following steps:

[0033] 1) Dissolving the biomass carbon source in water to prepare a carbon source solution with a concentration of 250-400g / L;

[0034] 2) Put the chopped carbon fiber preform and carbon source solution into a hydrothermal kettle and react in a microwave reactor. The reaction temperature is 160-200°C, and the reaction time is 2-3 hours. After the reaction is completed, naturally cool to room temperature and take out the carbon fiber preform Carrying out vacuum drying treatment to obtain carbon fiber preform A;

[0035] 3) dissolving the nickel source in water, and adding urea to mix to obtain a nickel source solution;

[0036] 4) Put nickel source solution and carbon fiber preform A into a beaker, soak for 12 hours, and carry out vacuum treatment to obtain carbon fiber preform B; take out carbon fiber preform B and put it into a hydrothermal kettle, use ed...

Embodiment 1

[0047] Step 1: Select carbon felt as a chopped carbon fiber preform as a skeleton; use glucose as a carbon source, and prepare a glucose solution with a concentration of 300g / L;

[0048] Step 2: Put the chopped carbon fiber preform and the carbon source solution into a hydrothermal kettle to react in a microwave reactor, the reaction temperature is 200°C, the reaction time is 3h, then naturally cool to room temperature, and dry to obtain a high-density carbon fiber prefabrication body;

[0049]Step 3: Mix the nickel source and urea according to the set molar ratio to prepare a nickel source solution of nickel source: urea = 0.8:1; put the nickel source solution and carbon fiber preform into a beaker, soak for 12 hours, and then vacuumize Processing: Take out the carbon fiber prefabricated body and put it into a hydrothermal kettle, use edible oil as a solvent, put it into a microwave reactor for reaction, the reaction temperature is 200°C, and the reaction time is 2h. Dry and...

Embodiment 2

[0055] Step 1: Select carbon felt as a chopped carbon fiber preform as a skeleton; use glucose as a carbon source, and prepare a glucose solution with a concentration of 300g / L;

[0056] Step 2: Put the chopped carbon fiber preform and the carbon source solution into a hydrothermal kettle to react in a microwave reactor, the reaction temperature is 200°C, the reaction time is 3h, then naturally cool to room temperature, and dry to obtain a high-density carbon fiber prefabrication body;

[0057] Step 3: Mix the nickel source and urea according to the set molar ratio to prepare a nickel source solution of nickel source: urea = 0.8:1; put the nickel source solution and carbon fiber preform into a beaker, soak for 12 hours, and then vacuumize Processing: Take out the carbon fiber prefabricated body and put it into a hydrothermal kettle, use edible oil as a solvent, put it into a microwave reactor for reaction, the reaction temperature is 200°C, and the reaction time is 2h. Dry an...

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Abstract

The present invention provides a preparation of C / C-Ni-Cu composite material and its preparation method and application. The method uses chopped carbon fiber as a skeleton, and adopts microwave hydrothermal reaction to deposit a carbon layer on the surface of the carbon fiber. Glucose is the carbon source. Nickel nitrate hydrate was used as the nickel source, and urea was used as the precipitating agent to deposit C and NiO particles in the carbon fiber preform by hydrothermal technology. The hydrothermally deposited C / C‑NiO composites were sintered by vacuum carbothermal reduction reaction to obtain C / C‑Ni composites, and the catalytic graphitization of matrix carbon was realized. Using the infinite mutual solubility of Ni and Cu, the C / C-Ni-Cu composite material was prepared by molten copper infiltration technology, and the C / C-Ni-Cu composite material with excellent performance was obtained.

Description

technical field [0001] The invention belongs to the technical field of nano composite material preparation, and relates to a C / C-Ni-Cu composite material and a preparation method and application thereof. Background technique [0002] With the rapid development of the economy and the country's great investment in the railway industry, the high-speed railway has developed rapidly and has become an indispensable and important component of the railway transportation industry. The pantograph slide is the soul part of the high-speed rail electric locomotive. It transmits the current on the transmission network to the locomotive power supply system to maintain the normal operation of the electric locomotive. During the rapid operation of the high-speed rail, the pantograph slides are subjected to a working current of up to 150,000A, high-speed sliding friction of 300Km / h, and burnout of off-line arcs. They are exposed to the natural environment for a long time, and the service cond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/04C22C47/06C22C47/12C22C49/02C22C49/14B60L5/20C22C101/10
CPCB60L5/20C22C47/04C22C47/06C22C47/12C22C49/02C22C49/14
Inventor 李翠艳王鹏马媛月欧阳海波刘雪许钊
Owner SHAANXI UNIV OF SCI & TECH
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