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After-treatment method for preparing SiC framework-enhanced aluminum-matrix composite blank

A technology for strengthening aluminum-based and composite materials, which is applied in the direction of additive processing, additive manufacturing, and improvement of process efficiency. It can solve problems such as insufficient infiltration, complicated process, and low yield, and achieve the effect of avoiding insufficient infiltration of metals.

Active Publication Date: 2019-08-13
WUXI VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional ceramic skeleton composite material uses a binder to bind the reinforcement particle material together for sintering to form a porous material, and then infiltrate the metal material to form a composite material with a ceramic skeleton, such as a silicon carbide skeleton reinforced composite material, etc. , can improve the strength and toughness of the material, but the process is often complicated, and the phenomenon of insufficient infiltration is prone to occur during the infiltration of molten metal, resulting in low yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Select aluminum powder with a purity of more than 99%, with an average particle size between 5-60 μm;

[0033] (2) Select SiC powder with a purity of more than 99%, with an average particle size between 1-200nm;

[0034] (3) Use laser to roughen the working platform;

[0035] (4) Pre-lay one deck of aluminum powder material as described in step (1) on the working platform roughened in step (3), with a layer thickness of 0.1 mm;

[0036] (5) Using a laser to melt the material in step (4), and the working platform moves down;

[0037] (6) Steps (4) and (5) are repeated to form a bottom layer of consolidated metal with a certain thickness on the workbench, with a thickness of 5 cm;

[0038] (7) evenly pave the aluminum powder in one layer of step (1) on the bottom layer of consolidated metal layer formed in step (6), and the layer thickness is 0.1mm;

[0039] (8) On the basis of step (7), lay SiC powder according to a certain path, the layer thickness is 0.1mm, and ...

Embodiment 2

[0049] (1) Select aluminum powder with a purity of more than 99%, with an average particle size between 5-60 μm;

[0050] (2) Select SiC powder with a purity of more than 99%, with an average particle size between 1-200nm;

[0051] (3) Use laser to roughen the working platform;

[0052] (4) Pre-lay one deck of aluminum powder material as described in step (1) on the working platform roughened in step (3), with a layer thickness of 0.02mm;

[0053] (5) Using a laser to melt the material in step (4), and the working platform moves down;

[0054] (6) Repeat steps (4) and (5) to form a certain thickness of bottom layer of consolidated metal layer on the workbench, with a thickness of 2cm;

[0055] (7) evenly lay aluminum powder in one layer of step (1) on the bottom layer of consolidated metal layer formed in step (6), and the layer thickness is 0.02mm;

[0056] (8) On the basis of step (7), lay SiC powder according to a certain path, the layer thickness is 0.01mm, and use lase...

Embodiment 3

[0066] (1) Select aluminum powder with a purity of more than 99%, with an average particle size between 5-60 μm;

[0067] (2) Select SiC powder with a purity of more than 99%, with an average particle size between 1-200nm;

[0068] (3) Use laser to roughen the working platform;

[0069] (4) Pre-lay one deck of aluminum powder material as described in step (1) on the working platform roughened in step (3), with a layer thickness of 1mm;

[0070] (5) Using a laser to melt the material in step (4), and the working platform moves down;

[0071] (6) Steps (4) and (5) are repeated to form a bottom layer of consolidated metal with a certain thickness on the workbench, with a thickness of 10 cm;

[0072] (7) evenly lay aluminum powder in one deck step (1) on the bottom layer of consolidated metal layer formed in step (6), and the layer thickness is at 1mm;

[0073] (8) On the basis of step (7), lay SiC powder according to a certain path, the layer thickness is 1mm, and use laser to...

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Abstract

The invention discloses an after-treatment method for preparing a SiC framework-enhanced aluminum-matrix composite blank. According to the after-treatment method for preparing the SiC framework-enhanced aluminum-matrix composite blank, a SiC powder material can be distributed along a certain path, a ceramic framework is formed in the material, integral formation of the ceramic framework material and a metal-matrix material is achieved, and the phenomenon of insufficient metal infiltration in the ceramic framework composite preparation process of a traditional method is avoided.

Description

technical field [0001] The invention relates to the field of additive preparation, in particular to a post-processing method for preparing SiC skeleton-reinforced aluminum matrix composite blanks. Background technique [0002] The composition of composite materials includes two parts: matrix and reinforcement materials. Non-metallic substrates mainly include synthetic resin, carbon, graphite, rubber, ceramics; metal substrates mainly include aluminum, magnesium, copper and their alloys; reinforcing materials mainly include glass fiber, carbon fiber, boron fiber, aramid fiber and other organic fibers and carbonization. Silicon fibers, asbestos fibers, whiskers, metal wires and hard particles, etc. Composite materials can be divided into metal and metal composite materials; metal and non-metal composite materials; non-metal and non-metal composite materials according to their composition. According to the structural characteristics, it can be divided into fiber composite mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y10/00C22C1/05C22C1/10
CPCB33Y10/00C22C1/05C22C1/0416B22F10/00B22F10/28B22F10/64Y02P10/25
Inventor 田学锋杨小波陈玉平
Owner WUXI VOCATIONAL & TECHN COLLEGE