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Carbon fiber reinforced ceramic-based composite material and preparation method of pyrolytic carbon interface layer

A composite material and carbon fiber technology, which is applied in the field of carbon fiber reinforced ceramic matrix composite materials and pyrolytic carbon interface layer preparation, can solve the problems of mismatching properties between the reinforcement and the matrix, and improve the interface bonding state and microstructure. Damaged, Mitigated Effects of Mismatched Physical and Chemical Properties

Pending Publication Date: 2020-08-18
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical task of the present invention is to address the above existing problems, provide a carbon fiber reinforced ceramic matrix composite material and a method for preparing a pyrolytic carbon interface layer, and solve the problem that the properties of the carbon fiber reinforced ceramic matrix composite material reinforcement and the matrix do not match.

Method used

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  • Carbon fiber reinforced ceramic-based composite material and preparation method of pyrolytic carbon interface layer
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  • Carbon fiber reinforced ceramic-based composite material and preparation method of pyrolytic carbon interface layer

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Embodiment 1

[0028] A method for preparing a pyrolytic carbon interface layer of a carbon fiber reinforced ceramic matrix composite material, the implementation steps are as follows:

[0029] Firstly, carbon fiber reinforcement is formed: needle-punched weaving process, one layer of T7006K non-weft fabric and one layer of T70012K net tire are alternately laminated and continuously needle-punched to form a whole fabric, and the non-weft fabric adopts 0° / 90° lamination.

[0030] Vacuum debinding of carbon fiber reinforcements. Put the carbon fiber reinforced body into a high-temperature furnace for debinding treatment in a vacuum state, the treatment temperature is 1040°C, and the treatment time is 1.5h.

[0031] Deposit a pyrolytic carbon interface layer. Put the carbon fiber reinforcement after the above treatment into a chemical vapor deposition furnace, and deposit the pyrolytic carbon interface layer according to the following process conditions. The deposition temperature is 950°C, th...

Embodiment 2

[0035] A method for preparing a pyrolytic carbon interface layer of a carbon fiber reinforced ceramic matrix composite material, the implementation steps are as follows:

[0036] Firstly, the carbon fiber reinforced body is formed. Using acupuncture weaving technology, one layer of T7006K non-weft fabric and one layer of T70012K net tire are alternately laminated and continuously needled to form a whole fabric, and the non-weft fabric adopts 0° / 90° lamination.

[0037] Vacuum debinding of carbon fiber reinforcements. Put the carbon fiber reinforced body into a high-temperature furnace for debinding treatment in a vacuum state, the treatment temperature is 950°C, and the treatment time is 2h.

[0038] Deposit a pyrolytic carbon interface layer. Put the carbon fiber reinforcement after the above treatment into a chemical vapor deposition furnace, and deposit the pyrolytic carbon interface layer according to the following process conditions. The deposition temperature is 970°C,...

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Abstract

The invention discloses a carbon fiber reinforced ceramic-based composite material and a preparation method of a pyrolytic carbon interface layer. The composite material comprises a carbon fiber reinforcement body, a ceramic matrix and a pyrolytic carbon interface layer; the pyrolytic carbon interface layer is located between the carbon fiber reinforcement body and the ceramic matrix and wraps thecarbon fiber reinforcement body, and the pyrolytic carbon interface layer is formed by depositing pyrolytic carbon on the surface of the carbon fiber reinforcement body through a chemical vapor deposition process. On one hand, mismatching of physical and chemical properties between the reinforcement carbon fiber and the ceramic matrix in the composite material is relieved, and on the other hand,the carbon fiber is protected from being damaged in subsequent preparation of the ceramic matrix. According to the pyrolytic carbon interface layer prepared by the method, the strength and toughness of the composite material are improved, and meanwhile, the fracture behavior of the material is changed from brittle fracture to ductile fracture.

Description

technical field [0001] The invention relates to the technical field of interface modification of carbon fiber reinforced ceramic matrix composite materials, and specifically provides a method for preparing a carbon fiber reinforced ceramic matrix composite material and a pyrolytic carbon interface layer. Background technique [0002] Carbon fiber reinforced ceramic matrix composites are composite materials in which carbon fiber is used as a reinforcement and ceramics are used as a matrix. By adding a high-temperature resistant ceramic matrix, carbon fiber reinforced ceramic matrix composites can be used as high-temperature resistant materials. Compared with other high-temperature-resistant materials, carbon fiber-reinforced ceramic matrix composites have the characteristics of light specific gravity, low thermal conductivity, low thermal expansion coefficient, chemical corrosion resistance, high strength, and high hardness, and have become an ideal high-temperature structura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/628C04B35/565C04B35/56C04B35/622
CPCC04B35/80C04B35/62873C04B35/62884C04B35/565C04B35/5622C04B35/622C04B2235/5248C04B2235/5252C04B2235/614C04B2235/616C04B2235/77C04B2235/96
Inventor 杨芳红周长灵姜凯李涵徐鸿照刘瑞祥张家路
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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