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A method to improve the corrosion resistance of carbon fiber reinforced aluminum matrix composites

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 high production cost, long preparation cycle, and complicated preparation process, and achieve low manufacturing cost and short preparation cycle , The effect of simple preparation process

Active Publication Date: 2022-06-17
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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  • A method to improve the corrosion resistance of carbon fiber reinforced aluminum matrix composites

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specific Embodiment approach 1

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

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

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

[0027] 3. Forming: preheating the carbon fiber mold, and then using 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 be 300 to 400° C., and the heat preservation time to be 0.5 h to 12 h, and then cool to room temperature in t...

specific Embodiment approach 2

[0033] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, 0.1% of yttrium element powder and 99.9% of aluminum alloy are weighed according to the mass fraction. Others are the same as the first embodiment.

specific Embodiment approach 3

[0034] Embodiment 3: This embodiment differs from Embodiment 1 or 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

A method for improving the corrosion resistance of carbon fiber reinforced aluminum matrix composite materials, the invention relates to a method for improving the corrosion resistance of carbon fiber reinforced aluminum matrix composite materials. The invention aims to solve the technical problem that the composite material is easy to corrode caused by the interface reaction and electrochemical reaction of the current carbon fiber / aluminum matrix composite material. Methods: 1. Weighing materials; 2. Mixing and melting raw materials to obtain aluminum-yttrium alloy melt; 3. Preheating carbon fiber into a mold, and then using pressure infiltration method to infiltrate aluminum-yttrium alloy melt; 4. Heat treatment. In the invention, the matrix and the reinforcement are composited by means of pressure infiltration, and the precipitation of element Y at the interface between the carbon fiber and the aluminum alloy is used to prevent the interfacial reaction between the carbon fiber and aluminum, thereby improving the corrosion resistance of the carbon fiber reinforced aluminum matrix composite material. The carbon fiber reinforced aluminum-based composite material prepared by the invention can be used in various fields such as aviation, aerospace, medical treatment and sports equipment.

Description

technical field [0001] The present invention relates to a method for 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 regarded as the first choice for aerospace structural materials. At present, carbon fiber reinforced aluminum matrix composite materials have been used to manufacture rocket engine casings, missile instrument cabins, satellite antenna brackets, bracket mounting plates on space stations, 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 more and more urgent. Carbon fiber reinforced aluminum matrix composites will generate easily hydrolyzed Al4C3 due to the conta...

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Application Information

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Patent Type & Authority Patents(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