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Materials 2018, 11(8), 1367;

Oxidation Behavior of Tyranno ZMI-SiC Fiber/SiC-SiBC Matrix Composite from 800 to 1200 °C

Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China
Author to whom correspondence should be addressed.
Received: 9 June 2018 / Revised: 26 July 2018 / Accepted: 30 July 2018 / Published: 7 August 2018
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In this work, the self-healing Si-B-C matrix-modified ZMI-SiC fiber/SiC (SiC/SiC-SiBC) composite was prepared by a combined process of chemical vapor infiltration, slurry infiltration, and liquid silicon infiltration. The weight changes of the as-fabricate composite after oxidation at 800, 1000, and 1200 °C for 100 h were −0.41%, −0.06%, +0.05%, respectively. The corresponding strength retention ratios were 75%, 99%, 100%, respectively. With the increase of oxidation temperature, coating cracks would be closed. A dense oxidation film was formed with the oxidation of the SiBC matrix, preventing the oxidation of interphase and fiber and leading to excellent oxidation resistance at 1000 and 1200 °C. View Full-Text
Keywords: ceramic matrix composite; fibers; oxidation resistance ceramic matrix composite; fibers; oxidation resistance

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Zhao, D.; Fan, X.; Yin, X.; Cao, X.; Zhang, J. Oxidation Behavior of Tyranno ZMI-SiC Fiber/SiC-SiBC Matrix Composite from 800 to 1200 °C. Materials 2018, 11, 1367.

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