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A silicon carbide nanowire hybrid reinforced zirconium tungstate/aluminum composite material and its preparation method

A silicon carbide nanowire and aluminum composite material technology, which is applied in the field of zirconium tungstate/aluminum composite material and its preparation, can solve the problems of poor mechanical properties and achieve high density, low equipment investment, and improved mechanical properties

Active Publication Date: 2021-07-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem of poor mechanical properties of the existing zirconium tungstate / aluminum composite material, the present invention proposes a silicon carbide nanowire hybrid reinforced zirconium tungstate / aluminum composite material and its preparation method

Method used

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  • A silicon carbide nanowire hybrid reinforced zirconium tungstate/aluminum composite material and its preparation method

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Experimental program
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specific Embodiment approach 1

[0021] Specific implementation mode 1: In this implementation mode, the silicon carbide nanowire hybrid reinforced zirconium tungstate / aluminum composite material is composed of a reinforcement body and a matrix metal;

[0022] The reinforcement is zirconium tungstate mixed silicon carbide nanowire particles, and the silicon carbide nanowires in the zirconium tungstate mixed silicon carbide nanowire particles are evenly distributed on the surface of the zirconium tungstate particles;

[0023] The base metal is pure aluminum or aluminum alloy.

[0024] The principles and beneficial effects of this embodiment are:

[0025] 1. The composite material in this embodiment is a silicon carbide nanowire hybrid reinforced zirconium tungstate / aluminum composite material. The reinforcement in the composite material is zirconium tungstate particles and silicon carbide nanowires, and the silicon carbide nanowires are evenly distributed on the surface of the zirconium tungstate particles Ac...

specific Embodiment approach 2

[0028] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the aluminum alloy is Al-Si alloy, Al-Cu alloy, Al-Mg alloy, Al-Si-Cu alloy, Al-Si-Mg alloy , Al-Cu-Mg alloy, Al-Zn-Cu alloy, Al-Zn-Mg-Cu alloy, Al-Be alloy, Al-Li alloy, Al-Si-Cu-Mg alloy in one or more mixture. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0029] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the mass fraction of Si in the Al-Si alloy is 0.5%-25%; the mass fraction of Cu in the Al-Cu alloy is 0.5%- 53%; the mass fraction of Mg in the Al-Mg alloy is 0.5% to 38%; the mass fraction of Si in the Al-Si-Cu alloy is 0.5% to 25%, and the mass fraction of Cu is 0.5% to 53%; The mass fraction of Si in Al-Si-Mg alloy is 0.5%-25%, the mass fraction of Mg is 0.5%-38%; the mass fraction of Cu in Al-Cu-Mg alloy is 0.5%-53%, the mass fraction of Mg The fraction is 0.5% to 38%; the mass fraction of Zn in the Al-Zn-Cu alloy is 0.5% to 55%, and the mass fraction of Cu is 0.5% to 53%; the mass fraction of Zn in the Al-Zn-Mg-Cu alloy The mass fraction of Mg is 0.5%-38%, the mass fraction of Cu is 0.5%-53%; the mass fraction of Be in Al-Be alloy is 0.5%-20%; the mass fraction of Be in Al-Li alloy is The mass fraction of Li is 0.5% to 35%; the mass fraction of Al-Si-Cu-Mg alloy Si is...

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Abstract

A silicon carbide nanowire hybrid reinforced zirconium tungstate / aluminum composite material and a preparation method thereof, relating to a zirconium tungstate / aluminum composite material and a preparation method thereof. The purpose is to solve the problem of poor mechanical properties of zirconium tungstate / aluminum composite materials. The composite material is composed of reinforcement and matrix metal; silicon carbide nanowires in zirconium tungstate mixed silicon carbide nanowire particles are evenly distributed on the surface of zirconium tungstate particles . Preparation method: Prepare zirconium tungstate particles and silicon carbide nanowires into a mixed powder and fill it into a graphite mold, pour the molten matrix metal into a preheated iron mold until the liquid level of the molten matrix metal is higher than the graphite The upper surface of the mold is then subjected to pressure impregnation, and finally cooled and demoulded. The mechanical properties of the composite material prepared by the present invention are improved to 90-200MPa, and the lowest thermal expansion coefficient in 273-373K can reach 2×10 ‑6 K ‑1 . The invention is suitable for preparing zirconium tungstate / aluminum composite material.

Description

technical field [0001] The invention relates to a zirconium tungstate / aluminum composite material and a preparation method thereof. Background technique [0002] Metal matrix composite (Metal Matrix Composite, MMC) is a composite material prepared by advanced techniques such as pressure infiltration method, which uses metal or alloy as the matrix, uses particles, fibers, whiskers, nanometers, etc. as reinforcements. Compared with metal materials, metal matrix composites have better specific strength, specific stiffness, dimensional stability and thermal stability; compared with ceramic materials, they have better toughness and Processing performance. At present, metal matrix composites have been widely used in many fields such as electronic packaging, aerospace and aircraft key structural parts. [0003] With the rapid development of science and technology, electronic products are developing towards miniaturization and high integration. The coefficient of thermal expansio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/12C22C49/06C22C49/14C22C101/14
CPCC22C47/12C22C49/06C22C49/14
Inventor 周畅武高辉周勇孝陈国钦张强肖云臻
Owner HARBIN INST OF TECH
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