Preparation and Properties of Carbon Fiber Needling Preform Reinforced Silicon Carbide Composites
Source abstract
Abstract
Carbon fiber needling preform reinforced C/SiC composites were prepared byCVI+PIPcombined process.The densification efficiency,the microstructure and properties of the C/SiC com- posites 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.Un- der 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/cm~3 and 2.02g/cm~3, respectively,while the density of the composites reinforced with 3D woven preform is merely 1.81g/cm~3. The composites reinforced with carbon fiber needling perform exhibits good mechanical properties with flexural strength of 237MPa and shear strength of 26MPa,respectively.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced machining processes and optimization · Advanced Surface Polishing Techniques
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