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Laser 3D-printing silicon carbide ceramic-aluminum composite material and preparation method thereof

A technology for printing silicon carbide ceramics and aluminum composite materials, which is applied in the direction of additive processing, metal processing equipment, transportation and packaging, etc. Uniformity and stability, avoiding pore defects, and improving the effect of comprehensive performance

Inactive Publication Date: 2020-09-15
SUZHOU HONGJIU AVIATION THERMAL MATERIALS TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] To sum up, the current 3D printing of ceramic and metal composite materials is mainly through the preparation of ceramic powder or metal powder into slurry, and then printing out ceramic or metal blanks through 3D printing technology. The advantages of preparation cycle and reduced preparation cost, etc., but the material prepared by slurry 3D printing is relatively rough, the internal sintering of the material is not complete, and preparation defects are easy to remain, and the dimensional accuracy of the product is poor

Method used

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  • Laser 3D-printing silicon carbide ceramic-aluminum composite material and preparation method thereof
  • Laser 3D-printing silicon carbide ceramic-aluminum composite material and preparation method thereof

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Embodiment

[0020] A laser 3D printing silicon carbide ceramic aluminum composite material, which is composed of silicon carbide particles, binder, and aluminum alloy matrix, wherein the volume fraction of silicon carbide particles is 60%, the volume fraction of binder is 5%, and the volume fraction of aluminum alloy matrix It is 35%; it is characterized in that the silicon carbide particles and the binder are printed into a silicon carbide porous ceramic preform by laser 3D, and the aluminum alloy is filled in the silicon carbide porous ceramic preform; the particle size of the silicon carbide particles is 25 μm; the Described binder is aluminum powder, and aluminum powder particle size is 20 μ m; A kind of preparation method of laser 3D printing silicon carbide ceramic aluminum composite material is characterized in that comprising the steps of following order:

[0021] (1) Mix the silicon carbide particles and the binder evenly, put them into the laser 3D printing powder bed, and use th...

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Abstract

The invention discloses a laser 3D-printing silicon carbide ceramic-aluminum composite material. The composite material is prepared from, by volume, 50%-75% of silicon carbide particles, 3%-10% of a binder and 15%-47% of an aluminum alloy matrix. The composite material is characterized in that a silicon carbide porous ceramic preform is formed through laser 3D-printing of the silicon carbide particles and the binder and is filled with an aluminum alloy; the particle size of the silicon carbide particles ranges from 10 [mu]m to 50 [mu]m; and the binder is aluminum powder with the particle sizeranging from 5 [mu]m to [40]mu m. According to the composite material, the porous ceramic preform is prepared with the selective laser sintering 3D-printing technology, the problems that traditional preparation methods are long in technological process, complex in procedure, high in cost and the like are solved, the internal structure of the material is uniform, the size precision of the materialis higher, and the structure stability and the performance reliability of the material are improved remarkably.

Description

technical field [0001] The invention relates to a silicon carbide ceramic-aluminum composite material and a preparation method thereof, in particular to a laser 3D printing silicon carbide ceramic-aluminum composite material and a preparation method thereof. Background technique [0002] Particle-reinforced aluminum matrix composites have been widely used in aerospace, high-speed rail, and precision instruments in recent years because of their large specific modulus, high specific strength, low thermal expansion coefficient, high thermal conductivity, electrical conductivity, wear resistance, and good fatigue resistance. , Electronic packaging and other fields. The performance of particle-reinforced aluminum matrix composites largely depends on its preparation process and method. At present, the preparation methods of aluminum matrix composites mainly include powder metallurgy, stirring casting method, melt infiltration method, etc., but the preparation methods of these meth...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C29/06B22F1/00B22F3/105B22F3/26B33Y10/00
CPCC22C1/051C22C29/065C22C29/067B22F3/26B33Y10/00B22F1/105B22F1/10Y02P10/25
Inventor 陈照峰廖家豪
Owner SUZHOU HONGJIU AVIATION THERMAL MATERIALS TECH CO LTD
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