A kind of nano silicon carbide particle reinforced aluminum matrix composite material and preparation method thereof

Abstract

The invention relates to the technical field of particle-reinforced aluminum-based composite materials, and discloses a nano-silicon carbide particle-reinforced aluminum-based composite material and a preparation method thereof. The composite material is composed of nano-silicon carbide particles with a volume fraction of 6-16% uniformly distributed in an aluminum alloy with a volume fraction of 84-94%. The preparation method is firstly through batching, ball milling, preforming and hot pressing Prepare 1-5% nano-silicon carbide particle-reinforced aluminum-based composite material, then vacuum concentrate and evaporate part of the aluminum alloy matrix, and finally undergo solid solution and aging treatment to obtain the reinforced aluminum-based composite material with nano-silicon carbide particle content of the present invention. Material. Experimental data proves that the reinforced aluminum matrix composite material with high nano-silicon carbide particle content prepared by the present invention not only has high thermal conductivity, electrical conductivity, specific modulus, wear resistance and other functional properties due to the high content of nano-silicon carbide particles, but also takes into account the strength and plastic 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...

Examples

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...

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...

Examples

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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