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Method for improving corrosion resistance of carbon fiber reinforced aluminum matrix composite

A composite material and reinforced aluminum-based technology, which is applied in the field of improving the corrosion resistance of carbon fiber-reinforced aluminum-based composite materials, can solve the problems of long preparation period, complicated preparation process, and high production cost, and achieve short preparation period, simple preparation process, The effect of low manufacturing cost

Active Publication Date: 2021-06-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Corrosion resistance can be improved by anodic oxidation or coating, but the preparation process is complicated, the preparation cycle is long, and the production cost is high

Method used

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  • Method for improving corrosion resistance of carbon fiber reinforced aluminum matrix composite

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specific Embodiment approach 1

[0024] Specific Embodiment 1: This embodiment is a method for improving the corrosion resistance of carbon fiber reinforced aluminum matrix composite materials. The preparation method is carried out according to the following steps:

[0025] 1. Weighing: Weigh 0.05-3% yttrium element powder and 97-99.5% aluminum alloy according to the mass fraction;

[0026] 2. Mixed melting: use high-temperature heating to melt the aluminum alloy weighed in step 1 and add yttrium element powder for stirring to obtain an aluminum-yttrium alloy melt;

[0027] 3. Forming: Preheat the carbon fiber mold, and then use the pressure infiltration method to infiltrate the aluminum-yttrium alloy melt obtained in step 2 to obtain a composite material;

[0028] 4. Heat treatment: heat the composite material obtained in step 3 for heat preservation, control the heat preservation temperature to 300-400° C., and heat preservation time to 0.5h-12h, then furnace cool to room temperature to obtain a carbon fibe...

specific Embodiment approach 2

[0033] Embodiment 2: This embodiment differs from Embodiment 1 in that: Step 1 weighs 0.1% yttrium element powder and 99.9% aluminum alloy according to the mass fraction. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0034] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: Step 1 weighs 0.2% yttrium element powder and 99.8% aluminum alloy according to the mass fraction. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a method for improving the corrosion resistance of the carbon fiber reinforced aluminum matrix composite, and particular to a method for improving the corrosion resistance of the carbon fiber reinforced aluminum composite. The invention aims to solve the technical problem that the composite material is easy to corrode due to interface reaction and electrochemical reaction of the conventional carbon fiber / aluminum composite. The method comprises the following steps: step 1, performing weighing; step 2, mixing and melting raw materials to obtain an aluminum-yttrium alloy melt; step 3, putting carbon fibers into a mold to be preheated, and then infiltrating the aluminum-yttrium alloy melt through a pressure infiltration method; and step 4, performing heat treatment. According to the method, a matrix and a reinforcement body are compounded through the pressure infiltration method, and carbon fibers and aluminum are prevented from interface reaction through precipitation of the element Y at the interface of the carbon fibers and the aluminum alloy so that the corrosion resistance of the carbon fiber reinforced aluminum matrix composite is improved. The carbon fiber reinforced aluminum composite prepared by the method can be applied to various fields of aviation, aerospace, medical treatment, sports equipment and the like.

Description

technical field [0001] The present invention relates to a method of improving the corrosion resistance of carbon fiber reinforced aluminum matrix composites. Background technique [0002] Carbon fiber reinforced aluminum matrix composites have the advantages of high specific strength and specific stiffness, and have always been considered as the first choice for aerospace structural materials. At present, it has taken the lead in using carbon fiber reinforced aluminum matrix composites to manufacture rocket engine casings, missile instrument compartments, satellite antenna brackets, space station bracket mounting plates, and optical mirrors or mirror brackets in high-precision optical measurement systems. With the continuous development of aerospace technology, the demand for lightweight carbon fiber aluminum matrix corrosion-resistant composite materials is becoming more and more urgent. Due to the contact and interfacial reaction between carbon fiber and aluminum matrix, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/12C22F1/04C22C49/06C22C49/14C22C101/10
CPCC22C47/12C22C49/06C22C49/14C22F1/04
Inventor 康鹏超吕嗣轩武高辉陈国钦芶华松姜龙涛辛玲杨宁修子扬杨文澍张强周畅乔菁
Owner HARBIN INST OF TECH
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