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Research Article | Open Access

Microstructure and mechanical properties of SiCf/SiBCN ceramic matrix composites

Jiaying WANG, Zhihua YANG, Xiaoming DUAN, Dechang JIA( ), Yu ZHOU
Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin 150080, China
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Abstract

SiC fiber reinforced SiBCN ceramic matrix composites (CMCs) have been prepared by mechanical alloying and consolidated by hot pressing. During the sintering process, amorphous SiC fibers crystallized seriously and transformed into β-SiC. Meanwhile, the interfacial carbothermal reactions caused the strong bonding between the matrix and fibers. As a result, SiCf/SiBCN fractured in a typical catastrophic manner. Room-temperature mechanical properties reached the maximums for the CMC samples sintered at 1900 ℃/60 MPa/30 min. The density, flexural strength, Young’s modulus and fracture toughness are 2.56±0.02 g/cm3, 284.3±17.9 MPa, 183.5±11.1 GPa and 2.78±0.14 MPa·m1/2, respectively.

Keywords

hot pressingcompositesmechanical propertiesfiber

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Journal of Advanced Ceramics
Volume 4 Issue 1,
March 2015
Pages 31-38
DOI: 10.1007/s40145-015-0128-2
Cite this article:
WANG J, YANG Z, DUAN X, et al. Microstructure and mechanical properties of SiCf/SiBCN ceramic matrix composites. Journal of Advanced Ceramics, 2015, 4(1): 31-38. https://doi.org/10.1007/s40145-015-0128-2

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Received: 29 August 2014
Accepted: 17 September 2014
Published: 31 January 2015
© The author(s) 2015

Open Access: This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.
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