Fatigue Behavior of Ceramic Matrix Composite Oxidized at Intermediate Temperatures

Shijie Zhu

doi:10.2320/matertrans.47.1965

MATERIALS TRANSACTIONS

Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678

Fatigue Behavior of Ceramic Matrix Composite Oxidized at Intermediate Temperatures

Shijie Zhu

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Keywords: ceramic matrix composite, SiC/SiC, fatigue, interface, fracture, oxidation, fiber pullout

JOURNAL FREE ACCESS

2006 Volume 47 Issue 8 Pages 1965-1967

DOI https://doi.org/10.2320/matertrans.47.1965

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Abstract

The effect of intermediate temperature oxidation on fatigue behavior of SiC/SiC is investigated to understand fatigue damage mechanisms. It has been found that fatigue life is decreased by 13% after oxidation at 600°C for 100 hours due to disappearance of carbon interphase by oxidation. The strong bonding between the fibers and matrix caused by SiO₂ formation at 800°C for 100 hours leads to the shortest fatigue life.

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