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Nanometer silicon carbide particle reinforced aluminum matrix composite and preparation method thereof

A technology of nano-silicon carbide and particle-reinforced aluminum, which is applied in the field of particle-reinforced aluminum matrix composites to achieve good plasticity, high stiffness and high plasticity

Inactive Publication Date: 2016-12-21
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the nano-silicon carbide particle-reinforced aluminum-based composite materials currently on the market cannot simultaneously take into account good functionality, strength and plastic toughness.

Method used

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  • Nanometer silicon carbide particle reinforced aluminum matrix composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The volume fraction of the nano-silicon carbide particle content of a kind of nano-silicon carbide particle-reinforced aluminum-based composite material obtained in Example 1 is 6%, and its raw materials are: 1% volume fraction of nano-silicon carbide particles and 99% volume fraction of aluminum Alloy powder, in which nano-silicon carbide particles are made of micro-silicon carbide particles at -20°C and ball-to-material ratio of 20:1, in a ball-milling sealed tank filled with argon gas for 15 hours through zirconia balls with a diameter of 5mm. The purity of the nano-silicon carbide is more than 99.9%, and the particle size is 40nm (DN50); the aluminum alloy powder is 2024 aluminum alloy powder, and the particle size is 8 μm, and its preparation method is:

[0027] Step 1: Under the protection of argon gas, mix the nano-silicon carbide particles and aluminum alloy powder, put them into a sealed ball mill tank, vacuumize the sealed ball mill tank and then fill it with a...

Embodiment 2

[0033] The volume fraction of the nano-silicon carbide particle content of a kind of nano-silicon carbide particle-reinforced aluminum-based composite material obtained in Example 2 is 8%, and its raw materials are: 2% volume fraction of nano-silicon carbide particles and 98% volume fraction of aluminum Alloy powder, in which nano-silicon carbide particles are made of micro-silicon carbide particles at -13°C and ball-to-material ratio of 30:1, in a ball-milling sealed tank filled with argon gas for 19 hours through zirconia balls with a diameter of 6mm The purity of the nano-silicon carbide is more than 99.9%, and the particle size is 44nm (DN50); the aluminum alloy powder is 2024 aluminum alloy powder, and the particle size is 9 μm, and its preparation method is:

[0034] Step 1: Under the protection of argon gas, mix the nano-silicon carbide particles and aluminum alloy powder, put them into a sealed ball mill tank, vacuumize the sealed ball mill tank and then fill it with ar...

Embodiment 3

[0040] The volume fraction of the nano-silicon carbide particle content of a kind of nano-silicon carbide particle-reinforced aluminum-based composite material obtained in Example 3 is 10%, and its raw materials are: 2% volume fraction of nano-silicon carbide particles and 98% volume fraction of aluminum Alloy powder, in which nano-silicon carbide particles are made of micro-silicon carbide particles at -4°C, ball-to-material ratio of 45:1, in an argon-filled sealed tank for ball milling, made by zirconia balls with a diameter of 7mm for 23 hours The purity of the nano-silicon carbide is more than 99.9%, and the particle size is 48nm (DN50); the aluminum alloy powder is 2024 aluminum alloy powder, and the particle size is 10 μm, and its preparation method is:

[0041] Step 1: Under the protection of argon gas, mix the nano-silicon carbide particles and aluminum alloy powder, put them into a sealed ball mill tank, vacuumize the sealed ball mill tank and then fill it with argon g...

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Abstract

The invention relates to the technical field of particle reinforced aluminum matrix composites and discloses a nanometer silicon carbide particle reinforced aluminum matrix composite and a preparation method thereof. The composite is prepared by uniformly distributing nanometer silicon carbide particles with the volume percentage of 6-16% into aluminum alloy with the volume percentage of 84-94%. The preparation method comprises the steps of firstly, proportioning, ball milling, premolding and carrying out hot pressing molding to prepare 1-5% of nanometer silicon carbide particle reinforced aluminum matrix composite; next, carrying out vacuum concentration on the 1-5% of nanometer silicon carbide particle reinforced aluminum matrix composite to evaporate parts of aluminum alloy matrixes; and finally, carrying out solid solution and aging treatment to prepare the nanometer silicon carbide particle reinforced aluminum matrix composite disclosed by the invention. Experiment data proves that the reinforced aluminum matrix composite with high nanometer silicon carbide particle content, prepared by using the preparation method not only has the functional properties of high heat conductivity, electrical conductivity, specific modulus, wear resistance and the like due to the high nanometer silicon carbide particle content, but also has strength as well as plasticity and toughness.

Description

technical field [0001] The invention relates to the technical field of particle-reinforced aluminum-based composite materials, in particular to a nano-silicon carbide particle-reinforced aluminum-based composite material and a preparation method thereof. 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 of aviation, aerospace, automobiles, electronics, etc., and its application in optical precision components and ine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C32/00C22C21/00C22C1/10
CPCC22C1/1036C22C21/00C22C32/0063C22C1/1047
Inventor 郝世明王昶清王朝勇谢敬佩王晓飞王爱琴王文焱李继文
Owner HENAN UNIV OF SCI & TECH
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