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Journal of Advanced Ceramics 2017, 6(2): 110-119 https://doi.org/10.1007/s40145-017-0223-7
Research Article | Open Access | Issue | Published: 17 May 2017

Preparation and characterization of high-performance ZrB2-SiC-Cf composites sintered at 1450 °C

Show Author's Information Wenhu HONG†,a,  Kaixuan GUI†,b,  Ping HUb,c( ),  Xinghong ZHANGb,  Shun DONGb
China Academy of Launch Vehicle Technology, Beijing 100000, China
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, China
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China

† Wenhu Hong and Kaixuan Gui contributed equally to this work.

Keywords:
microstructure, ceramics, thermal shock resistance, oxidation resistance, fibers
Cite this article:
HONG W, GUI K, HU P, et al. Preparation and characterization of high-performance ZrB2-SiC-Cf composites sintered at 1450 °C. Journal of Advanced Ceramics, 2017, 6(2): 110-119. https://doi.org/10.1007/s40145-017-0223-7
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Abstract Full text About this article

ZrB2-SiC-Cf composites containing 20-50 vol% short carbon fibers were hot pressed at low sintering temperature (1450 ℃) using nanosized ZrB2 powders, in which the fiber degradation was effectively inhibited. The strain-to-failure values of such composites increased with increasing fiber content, and the value for the composite with 50 vol% Cf was even more than 3 times higher than that of the composite with 20 vol% Cf. Furthermore, the composite exhibited non-brittle fracture mode when the fiber content was above 30 vol%, and the thermal shock critical temperature difference of the composite with 30 vol% Cf was up to 727 ℃, revealing excellent thermal shock resistance of this composite. Additionally, ZrB2-SiC-Cf composites displayed good oxidation resistance when the fiber content was below 40 vol%, suggesting that this method provides a promising way for preparation of high-performance ZrB2-SiC-Cf composites at low temperature.


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About this article

Preparation and characterization of high-performance ZrB2-SiC-Cf composites sintered at 1450 °C

Show Author's information Wenhu HONG†,a, Kaixuan GUI†,b, Ping HUb,c( ), Xinghong ZHANGb, Shun DONGb
China Academy of Launch Vehicle Technology, Beijing 100000, China
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, China
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China

† Wenhu Hong and Kaixuan Gui contributed equally to this work.

Abstract

ZrB2-SiC-Cf composites containing 20-50 vol% short carbon fibers were hot pressed at low sintering temperature (1450 ℃) using nanosized ZrB2 powders, in which the fiber degradation was effectively inhibited. The strain-to-failure values of such composites increased with increasing fiber content, and the value for the composite with 50 vol% Cf was even more than 3 times higher than that of the composite with 20 vol% Cf. Furthermore, the composite exhibited non-brittle fracture mode when the fiber content was above 30 vol%, and the thermal shock critical temperature difference of the composite with 30 vol% Cf was up to 727 ℃, revealing excellent thermal shock resistance of this composite. Additionally, ZrB2-SiC-Cf composites displayed good oxidation resistance when the fiber content was below 40 vol%, suggesting that this method provides a promising way for preparation of high-performance ZrB2-SiC-Cf composites at low temperature.

Keywords: microstructure, ceramics, thermal shock resistance, oxidation resistance, fibers

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Publication history
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Publication history

Received: 15 December 2016
Revised: 08 March 2017
Accepted: 17 March 2017
Published: 17 May 2017
Issue date: June 2017

Copyright

© The author(s) 2017

Acknowledgements

Financial support of this work was provided by the Innovative Research Group of National Natural Science Foundation of China (No. 11421091), the National Fund for Distinguished Young Scholars (No. 51525201), and the Fundamental Research Funds for the Central Universities (Grant No. HIT.BRETIII.201506).

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