Fabrication of SiC_f/SiC Composite with In Situ Grown SiC Nanowire by Polymer and Infiltration Pyrolysis Process

Abstract:

SiC nanowires were in-situ grown in SiC fiber fabrics by chemical vapor deposition (CVD) process via pyrolysis of polycarbosilane (PCS) at 1300°C and 1400°C, respectively. Then SiC_f/SiC composites were fabricated with the fabrics by polymer and infiltration pyrolysis (PIP) process. Single-filament tensile strengths of the SiC fibers heat treated at different temperature were measured. It was indicated that the mechanical property of the KD-ISiC fiber significantly degenerated above 1100°C, especially at 1400°C. Nevertheless, the prepared SiC_f/SiC composite with in-situ grown SiC nanowires exhibited good mechanical performance, suggesting that the SiC nanowire is an effective reinforcement for the SiC_f/SiC composite.

• Periodical: Materials Science Forum (Volume 848)
• Pages: 32-37
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.848.32
• Online since: March 2016
• Authors: Sui Juan Zeng*, Jin Shan Yu, Xin Gui Zhou, Hong Lei Wang
• Keywords: Infiltration Pyrolysis, Mechanical Properties, Polymer, SiC Nanowires, SiC_f/SiC Composite

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