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Preparation method of copper/silicon carbide composite material based on I-WP curved surface

A technology of I-WP and composite materials, applied in ceramic products, applications, household appliances, etc., can solve the problems of reduced strength and wear resistance, easy cracks, collapse, etc., and achieve performance optimization, high specific strength, and high strength Effect

Inactive Publication Date: 2019-03-26
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Commonly used preparation methods mainly include: internal oxidation method, powder metallurgy method, mechanical alloying method, and stirred casting method, but these traditional preparation methods cannot form a regular three-dimensional interconnected structure. In order to ensure electrical conductivity, a large amount of Cu needs to be added to form a three-dimensional network. structure, but too much copper will reduce the strength and wear resistance, prone to cracks, collapse and other defects

Method used

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  • Preparation method of copper/silicon carbide composite material based on I-WP curved surface
  • Preparation method of copper/silicon carbide composite material based on I-WP curved surface
  • Preparation method of copper/silicon carbide composite material based on I-WP curved surface

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Effect test

Embodiment 1

[0019] (1) Preparation of the PLA skeleton: use the fused deposition 3D printer to directly print the I-WP surface structure of the designed PLA material, with a layer thickness of 0.1mm, a cube with a side length of 4×4×4cm, a period parameter of 2, and a curved surface Thickness 1mm;

[0020] (2) Preparation of ceramic powder: SiC powder, talcum powder, Al 2 o 3 Powder and Y 2 o 3 The powder and cellulose are weighed and mixed according to the ratio of 90.5:4.0:1.5:1.0:3.0. After ball milling for 4 hours, sieve to obtain ceramic powder with a particle size of ≤1 μm;

[0021] (3) Preparation of ceramic slurry: Pour the ceramic powder described in step (2) into absolute ethanol, the mass ratio of powder to absolute ethanol is 2:1, and adjust the pH to 10 with ammonia water. Put it in a drum-type ball mill for mixing for 3 hours, and the rotation speed is 250r / min, so that all kinds of materials are mixed evenly to form a slurry, and then aged for 1 day to obtain a silicon ...

Embodiment 2

[0026] (1) Preparation of PLA skeleton: use the fused deposition 3D printer to directly print the I-WP surface structure of the designed PLA material, with a layer thickness of 0.1mm, a cube with a side length of 4×4×4cm, a period parameter of 3, and a curved surface Thickness 1mm;

[0027] (2) Preparation of ceramic powder: SiC powder, talcum powder, Al 2 o 3 Powder and Y 2 o 3 The powder and cellulose are weighed and mixed according to the ratio of 90.5:4.0:1.5:1.0:3.0. After ball milling for 4 hours, sieve to obtain ceramic powder with a particle size of ≤1 μm;

[0028] (3) Preparation of ceramic slurry: Pour the ceramic powder described in step (2) into absolute ethanol, the mass ratio of powder to absolute ethanol is 2:1, and adjust the pH to 10 with ammonia water. Put it in a drum-type ball mill for mixing for 3 hours, and the rotation speed is 250r / min, so that all kinds of materials are mixed evenly to form a slurry, and then aged for 1 day to obtain a silicon carb...

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Abstract

The invention discloses a preparation method of a Cu / SiC composite material based on an I-WP curved surface. The Cu / SiC composite material is a composite material prepared from metal phase Cu and ceramic phase SiC which are continuous in a three-dimensional space network structure and are mutually wound together on the basis of a three-period minimal surface I-WP structure. The I-WP curved surfacestructure can achieve effects of effectively avoiding stress concentration and increasing the mechanical property of the composite material. The Cu / SiC composite material has excellent plasticity andelectrical and thermal conductivity of the metal and also has the characteristics of the ceramic such as high hardness, high wear resistance and chemical stability and the like. The preparation method specifically comprises the following steps: designing and performing 3D printing on the structure of the I-WP curved surface; preparing a porous SiC ceramic preform; and infiltrating the metal Cu. Meanwhile, by changing the printing parameters of the I-WP curved surface structure and controlling the content of the metal and the ceramic, the prepared Cu / SiC composite material is suitable for industrial needs.

Description

technical field [0001] The present invention relates to a preparation method of a Cu / SiC composite material, in particular to a Cu / SiC composite material based on an I-WP curved surface and a preparation method thereof Background technique [0002] Copper has good electrical and thermal conductivity, but poor hardness and wear resistance; while silicon carbide ceramics have high hardness, second only to several superhard materials, and have good mechanical properties, but silicon carbide ceramics are more brittle. SiC ceramic materials have high elastic modulus, good oxidation resistance, high temperature strength and other superior properties, and are one of the most ideal raw materials for strengthening electrical contact matrix materials. Therefore, combining metal copper and silicon carbide ceramics to make a composite material can give full play to the performance advantages of the two materials and make up for their respective shortcomings, making the Cu / SiC composite ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/577C04B35/622C04B38/00C04B38/06C04B41/88
CPCC04B35/565C04B35/622C04B38/0605C04B38/0615C04B41/5127C04B41/88C04B2235/3217C04B2235/3225C04B2235/349C04B2235/6022C04B2235/6562C04B2235/6567C04B41/4515C04B41/4523
Inventor 叶喜葱熊金艳林咸参徐张洋吴海华
Owner CHINA THREE GORGES UNIV
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