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Microstructure and Mechanical Properties of SiC and Carbon Hybrid Fiber Reinforced SiC Matrix Composite
Author(s) -
Liu Shanhua,
Zhang Litong,
Yin Xiaowei,
Cheng Laifei,
Liu Yongsheng
Publication year - 2011
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2010.02588.x
Subject(s) - materials science , composite material , microstructure , chemical vapor infiltration , composite number , silicon carbide , pyrolytic carbon , flexural strength , fracture toughness , ceramic matrix composite , pyrolysis , chemical engineering , engineering
Silicon carbide (SiC) matrix composite reinforced by both SiC and carbon fibers ([SiC–C]/pyrolytic carbon [PyC]/SiC) was fabricated by chemical vapor infiltration for reducing matrix microcracks. Microstructure, mechanical properties, and oxidation resistance of the composite were compared with those of C/PyC/SiC and C/PyC HT /SiC composites in which PyC interphase was untreated and heat‐treated at 1800°C in argon, respectively. Compared with the C/PyC/SiC composite, (SiC–C)/PyC/SiC composite shows considerable improvements in flexural strength, fracture toughness, and oxidation resistance. The different mechanical behaviors of the three composites were analyzed based on the He and Hutchinson's model.