Preparation method of modified carbon fiber and zirconium carbide reinforced aluminum-based composite material

A technology for strengthening aluminum-based and composite materials, applied in metal material coating process, liquid chemical plating, coating, etc., can solve problems such as increasing the reaction degree of Al and C, large difference in carbon fiber density, and difficulty in uniform distribution of carbon fibers , to achieve the effects of improving wear resistance and mechanical properties, increasing sintering rate and shortening sintering time

Pending Publication Date: 2021-03-16
XI AN JIAOTONG UNIV +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The casting process is simple and the manufacturing cost is low, but due to the large difference in density between carbon fiber and metal, carbon fiber is easy to float on the surface of molten aluminum, which makes it difficult to evenly distribute carbon fiber
The hot pressing sintering method has low sintering temperature and good material density. It is often used to prepare short fiber reinforced aluminum matrix composites, but the sintering time is longer, which will increase the reaction degree of Al and C and generate more Al. 4 C 3

Method used

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  • Preparation method of modified carbon fiber and zirconium carbide reinforced aluminum-based composite material
  • Preparation method of modified carbon fiber and zirconium carbide reinforced aluminum-based composite material
  • Preparation method of modified carbon fiber and zirconium carbide reinforced aluminum-based composite material

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preparation example Construction

[0038] A preparation method of modified carbon fiber and zirconium carbide reinforced aluminum matrix composite material of the present invention comprises the following steps:

[0039] S1. Use acetone to degumming the carbon fiber. The degumming time is 24-48 hours. After the degumming is completed, wash the carbon fiber with deionized water until neutral;

[0040] The carbon fiber model is T300-12k, with a diameter of 6-7 μm and a length of 0.5-2 mm.

[0041] S2. Put the carbon fiber into the roughening solution, roughen it for 2-4 hours, and then wash it with deionized water until neutral;

[0042] Rough solution is 100~140ml / L H 2 SO 4 and 140~200g / L (NH 4 ) 2 SO 4 .

[0043] S3. Put the carbon fibers into the sensitization solution, stir with a magnetic stirrer for 15-30 minutes, and then wash the carbon fibers with deionized water until neutral;

[0044] The sensitization solution is SnCl with a concentration of 20-40g / L 2 And 40~50ml / L concentrated HCl.

[0045...

Embodiment 1

[0057] S1. Use acetone to degumming the carbon fiber. The degumming time is 24 hours. After the degumming is completed, the carbon fiber is washed with deionized water until neutral; the carbon fiber model is T300-12k, the diameter is 6-7 μm, and the length is 0.5mm.

[0058] S2, add 100ml / L of H 2 SO 4 and 140g / L (NH 4 ) 2 SO 4 Make a roughening solution, put the carbon fibers treated in step S1 into the roughening solution, roughen for 4 hours, and then wash with deionized water until neutral;

[0059] S3, SnCl with a concentration of 20g / L 2 Make a sensitization solution with concentrated HCl of 40ml / L, put the carbon fiber treated in step S2 into the sensitization solution, stir with a magnetic stirrer for 30min, and then wash the carbon fiber to neutrality with deionized water;

[0060] S4, the PdCl of 0.2g / L 2 Make an activation solution with 15ml / L concentrated HCl, put the carbon fiber treated in step S3 into the activation solution, stir it magnetically for 30mi...

Embodiment 2

[0068] S1. Use acetone to degumming the carbon fiber. The degumming time is 36 hours. After the degumming is completed, the carbon fiber is washed with deionized water until neutral; the carbon fiber model is T300-12k, the diameter is 6-7 μm, and the length is 1mm.

[0069] S2, add 110ml / L of H 2 SO 4 and 155g / L (NH 4 ) 2 SO 4 Prepare a roughening solution, put the carbon fibers treated in step S1 into the roughening solution, roughen for 3.5 hours, and then wash with deionized water until neutral;

[0070] S3, SnCl with a concentration of 25g / L 2 Make a sensitization solution with 42ml / L of concentrated HCl, put the carbon fibers treated in step S2 into the sensitization solution, stir with a magnetic stirrer for 25min, and then wash the carbon fibers with deionized water until neutral;

[0071] S4, the concentration is the PdCl of 0.24g / L 2 Make an activation solution with 16ml / L concentrated HCl, put the carbon fiber treated in step S3 into the activation solution, st...

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Abstract

The invention discloses a preparation method of a modified carbon fiber and zirconium carbide reinforced aluminum-based composite material. The preparation method comprises the following steps: carrying out degumming, roughening, sensitization, activation and reduction pretreatment on carbon fibers with the diameter of 6-7 [mu]m and the length of 0.5-2 mm; 2, a layer of metal nickel is plated on the surface of the carbon fiber by adopting a chemical plating method to obtain a nickel-plated carbon fiber; 3, ball-milling and mixing are performed on zirconium carbide and aluminum alloy powder, and nickel-plated carbon fibers are mechanically stirred to obtain mixed powder; and 4, spark plasma sintering is performed on the mixed powder, cooled and demolded to obtain the modified carbon fiber and zirconium carbide reinforced aluminum matrix composite material. The prepared modified carbon fiber and zirconium carbide reinforced aluminum matrix composite is good in mechanical property, high in hardness and good in wear resistance.

Description

technical field [0001] The invention belongs to the technical field of aluminum-based composite materials, and in particular relates to a preparation method of modified carbon fiber and zirconium carbide reinforced aluminum-based composite materials. Background technique [0002] The rapid development of the aerospace and automotive fields has put forward higher requirements for the comprehensive performance of materials. Researchers are unanimously committed to pursuing a large thrust-to-weight ratio of the engine, a high fuel consumption rate, sustainable development of energy, and lightweight materials. is the main way to solve this problem. Aluminum-based composite materials have the advantages of light weight, high specific strength, high specific stiffness, high wear resistance, low thermal expansion coefficient, and stable dimensions. They have excellent performance and strong designability. They have great potential in aerospace, military and automotive industries. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/06C22C49/14C22C47/04C22C47/14C23C18/18C23C18/36C22C101/10C22C121/02
CPCC22C47/04C22C47/14C22C49/06C22C49/14C23C18/1893C23C18/36
Inventor 高义民周璇路向前王怡然赵四勇
Owner XI AN JIAOTONG UNIV
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