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Instrument grade silicon carbide reinforced aluminum matrix composite for aviation and preparation method thereof

A technology for strengthening aluminum-based and composite materials, applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problems of thermal stability, strength and plastic toughness, etc., and achieve high specific stiffness , low density, and the effect of wear-resistant thermal expansion coefficient

Inactive Publication Date: 2014-05-07
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an instrument grade silicon carbide reinforced aluminum matrix composite material for aviation, to solve the problem that the existing aluminum matrix composite materials cannot take into account good thermal stability, strength and plastic toughness

Method used

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  • Instrument grade silicon carbide reinforced aluminum matrix composite for aviation and preparation method thereof
  • Instrument grade silicon carbide reinforced aluminum matrix composite for aviation and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] The instrument-grade SiC-reinforced aluminum-based composite material for aviation in this embodiment is made of the following raw materials in volume percentage: 1% of nano-SiC particles, 35% of Micro-SiC particles, and the balance is aluminum alloy powder. The D50 of the nano silicon carbide particles is 60nm; the D50 of the micron silicon carbide particles is 3 μm; the size of the aluminum alloy powder is 10 μm.

[0030] The nano-silicon carbide particles are prepared by the following method: the micro-silicon carbide particles are ball-milled, the balls of the ball mill are zirconia, the diameter of the balls is 5 mm, the ball-to-material ratio is 20:1, and the ball mills for 15 hours to obtain .

[0031] The preparation method of the aviation instrument grade silicon carbide reinforced aluminum matrix composite material of this embodiment comprises the following steps:

[0032] 1) Ingredients: Under the protection of argon gas, take nano-silicon carbide particles,...

Embodiment 2

[0039] The instrument-grade silicon carbide reinforced aluminum matrix composite material for aviation in this embodiment is made of the following raw materials in volume percentage: 3% of nanometer silicon carbide particles, 35% of micron silicon carbide particles, and the balance is aluminum alloy powder. The D50 of the nano silicon carbide particles is 60nm; the D50 of the micron silicon carbide particles is 2 μm; the size of the aluminum alloy powder is 10 μm.

[0040] The nano-silicon carbide particles are prepared by the following method: ball-milling the micro-silicon carbide particles, the balls of the ball milling are zirconia, the diameter of the balls is 10 mm, the ball-to-material ratio is 40:1, and the ball mills for 20 hours to obtain .

[0041] The preparation method of the aviation instrument grade silicon carbide reinforced aluminum matrix composite material of this embodiment comprises the following steps:

[0042] 1) Ingredients: Under the protection of arg...

Embodiment 3

[0049] The instrument-grade silicon carbide reinforced aluminum matrix composite material for aviation in this embodiment is made of the following raw materials in volume percentage: 5% of nanometer silicon carbide particles, 35% of micron silicon carbide particles, and the balance is aluminum alloy powder. The D50 of the nano silicon carbide particles is 60nm; the D50 of the micron silicon carbide particles is 2 μm; the size of the aluminum alloy powder is 10 μm.

[0050] The nano-silicon carbide particles are prepared by the following method: ball-milling the micro-silicon carbide particles, the balls of the ball milling are zirconia, the diameter of the balls is 15 mm, the ball-to-material ratio is 80:1, and the ball mills for 35 hours to obtain .

[0051] The preparation method of the aviation instrument grade silicon carbide reinforced aluminum matrix composite material of this embodiment comprises the following steps:

[0052] 1) Ingredients: Under the protection of arg...

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Abstract

The invention discloses an instrument grade silicon carbide reinforced aluminum matrix composite for aviation and a preparation method thereof. The composite is prepared from the following raw materials by volume percent: 1%-8% of nano silicon carbide particles, 35% of micron silicon carbide particles, and the balance of aluminum alloy powder. The total volume percent of silicon carbide can be regulated between 36% and 43% at will, so that lower coefficient of thermal expansion of the material is guaranteed; due to the addition of nano silicon carbide particles, the strength of the composite is effectively improved and the composite has good machining performance and plastic deformability; the prepared aluminum matrix composite has high specific strength, large specific stiffness, good thermal stability, high thermal conductivity, low density and the like, can be matched with various materials, can substitute for materials such as beryllium, bearing steel and carbon steel for aerospace inertial systems, and can be used in industries such as aerospace and automobiles.

Description

technical field [0001] The invention belongs to the technical field of aluminum-based composite materials, and in particular relates to an instrument-grade silicon carbide-reinforced aluminum-based composite material for aviation, and also relates to a preparation method for an instrument-grade silicon carbide-reinforced aluminum-based composite material for aviation. Background technique [0002] The development of aerospace technology has put forward new requirements and challenges for material performance. Under the background that it is increasingly difficult for ordinary single materials to meet the performance requirements of new mechanical structures, the particle-reinforced aluminum matrix that combines the advantages of multiple materials Composite materials are widely used in aerospace instruments due to their good mechanical properties such as high specific modulus and high specific strength. Widely concerned, it has shown broad application prospects in the fields...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C32/00B22F1/00B82Y30/00B82Y40/00C22C1/04C22C1/10
Inventor 郝世明谢敬佩王爱琴李继文王文焱孙浩亮李洛利柳培
Owner HENAN UNIV OF SCI & TECH
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