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A method for improving the mechanical properties of carbon fiber reinforced aluminum matrix composites

A composite material and reinforced aluminum-based technology, applied in the field of improving the mechanical properties of carbon fiber reinforced aluminum-based composite materials, to achieve the effects of improved mechanical properties, simple preparation process, and low manufacturing cost

Active Publication Date: 2022-06-17
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that the interface between aluminum alloy and carbon fiber is easy to generate interface product Al when the existing carbon fiber reinforced aluminum matrix composite material is prepared, the present invention 4 C 3 problem, and propose a method to improve the mechanical properties of carbon fiber reinforced aluminum matrix composites

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  • A method for improving the mechanical properties of carbon fiber reinforced aluminum matrix composites

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specific Embodiment approach 1

[0015] Embodiment 1: The method for improving the mechanical properties of carbon fiber reinforced aluminum matrix composites in this embodiment is carried out according to the following steps:

[0016] 1. Weighing: Weigh aluminum-cerium master alloy and aluminum alloy as raw materials, and the mass fraction of cerium element in the raw materials is 0.05-0.9%;

[0017] 2. Mixed melting: the aluminum alloy weighed in step 1 is heated and melted at a high temperature, and then an aluminum-cerium intermediate alloy is added, and stirred to obtain an aluminum alloy melt containing cerium;

[0018] 3. Forming: put the carbon fiber reinforcement into the mold and preheat, pour the aluminum alloy melt containing cerium obtained in step 2 into the mold, and carry out pressure infiltration to obtain a carbon fiber reinforced aluminum matrix composite material; the pressure infiltration process In, the aluminum alloy melt containing cerium obtained in step 2 is poured into the mold and ...

specific Embodiment approach 2

[0024] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mass fraction of cerium element in the raw material in step 1 is 0.05-0.9%.

specific Embodiment approach 3

[0025] Embodiment 3: The difference between this embodiment and the first or second embodiment is that the mass fraction of cerium element in the raw material in step 1 is 0.1-0.9%.

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Abstract

A method for improving the mechanical properties of a carbon fiber reinforced aluminum matrix composite material relates to a method for improving the mechanical properties of a carbon fiber reinforced aluminum matrix composite material. The purpose is to solve the problem that the interface between aluminum alloy and carbon fiber is easy to generate interface product Al during the preparation of existing carbon fiber reinforced aluminum matrix composites. 4 C 3 The problem. Method: take aluminum cerium master alloy and aluminum alloy as raw materials, heat and melt aluminum alloy at high temperature, then add aluminum cerium master alloy and stir to obtain aluminum alloy melt containing cerium; carry out pressure impregnation and heat treatment. The present invention utilizes the principle of thermodynamics to segregate and precipitate on the grain boundary by adding easily segregated elements, thereby improving the interface contact state between the carbon fiber and the aluminum matrix, reducing the surface energy of the grain boundary, and reducing the interface reaction, thereby inhibiting the carbon fiber and the aluminum matrix. Interfacial reaction, reduce the damage of carbon fiber, and improve the mechanical properties of composite materials. The invention is suitable for preparing carbon fiber reinforced aluminum matrix composite materials.

Description

technical field [0001] The present invention relates to a method for improving the mechanical properties of carbon fiber reinforced aluminum matrix composite materials. Background technique [0002] Carbon fiber reinforced aluminum matrix composites are one of the materials with the highest specific strength and specific stiffness, and have broad application prospects in the aerospace field. Carbon fiber reinforced aluminum matrix composites are used in the manufacture of shells of rocket engines, 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 composites is more and more urgent, and it is hoped that the mechanical properties of carbon fiber reinforced aluminum matrix composites can be as high as possible. [0003] Since carbon f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/08C22C49/06C22C49/14B22D23/04C22F1/04C22C101/10
CPCC22C47/08C22C49/06C22C49/14B22D23/04C22F1/04
Inventor 康鹏超赵旗旗王平平陈国钦芶华松姜龙涛武高辉辛玲杨宁王大奎
Owner HARBIN INST OF TECH
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