Preparation and Properties of Carbon Fiber Needling Preform Reinforced Silicon Carbide Composites

doi:10.3724/SP.J.1077.2008.00223

Abstract

Abstract: Carbon fiber needling preform
reinforced C/SiC composites were prepared by “CVI+PIP”combined process.
The densification efficiency, the microstructure and properties of the C/SiC
composites reinforced by carbon fiber needling preform were investigated
compared with 3D woven preform and pre-oxidation PAN fiber needling preform reinforced C/SiC composites. The results show that the densification
efficiency of carbon fiber needling preform is higher than that of 3D
woven preform. Under the same densification processing condition, the densitis of the composites reinforced with carbon fiber needling preform and pre-oxidation PAN fiber needling preform reach 2.08g/cm³ and 2.02g/cm³, respectively, while the density of the composites reinforced with 3D woven preform is merely 1.81g/cm³. The composites reinforced with carbon fiber needling perform exhibits good mechanical properties with flexural strength of 237MPa and shear strength of 26MPa, respectively.

Key words: C/SiC composites, needling preform, “CVI+PIP”combined process

CLC Number:

TB323

YAN Lian-Sheng,CUI Hong,LI Ke-Zhi,LI He-Jun,WANG Tao,Song Mai-Li. Preparation and Properties of Carbon Fiber Needling Preform Reinforced Silicon Carbide Composites[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2008.00223.

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Preparation and Properties of Carbon Fiber Needling Preform Reinforced Silicon Carbide Composites

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