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Title: Microstructures of short-carbon-fiber-reinforced SiC composites prepared by hot-pressing

Abstract

Microstructures of short-carbon-fiber-reinforced silicon carbide composites, prepared by hot-pressing with MgO-Al{sub 2}O{sub 3}-Y{sub 2}O{sub 3} as sintering additives, were investigated by means of X-ray diffractometry, scanning electron microscopy, and transmission electron microscopy. The results showed that the composites could be densified at a relatively low temperature of 1800 deg. C via the liquid-phase-sintering mechanism. The amorphous interphase in the composites not only avoided the direct contact of the fibers with the matrix, but also improved the fiber/matrix bonding, so they could improve the densification of the composites and avoid the degeneration of the carbon fiber. The nano silicon carbide derived from polycarbosilane, could play a role of improving the relative density of the composites.

Authors:
 [1];  [1]; ;  [2]
  1. Department of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150040 (China)
  2. Department of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001 (China)
Publication Date:
OSTI Identifier:
21192578
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 59; Journal Issue: 12; Other Information: DOI: 10.1016/j.matchar.2008.04.006; PII: S1044-5803(08)00134-4; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM OXIDES; CARBON FIBERS; HOT PRESSING; MAGNESIUM OXIDES; MICROSTRUCTURE; SCANNING ELECTRON MICROSCOPY; SILICON CARBIDES; SINTERING; TEMPERATURE RANGE 1000-4000 K; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; YTTRIUM OXIDES

Citation Formats

Xiulan, He, Department of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, Yingkui, Guo, Yu, Zhou, and Dechang, Jia. Microstructures of short-carbon-fiber-reinforced SiC composites prepared by hot-pressing. United States: N. p., 2008. Web.
Xiulan, He, Department of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, Yingkui, Guo, Yu, Zhou, & Dechang, Jia. Microstructures of short-carbon-fiber-reinforced SiC composites prepared by hot-pressing. United States.
Xiulan, He, Department of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, Yingkui, Guo, Yu, Zhou, and Dechang, Jia. 2008. "Microstructures of short-carbon-fiber-reinforced SiC composites prepared by hot-pressing". United States.
@article{osti_21192578,
title = {Microstructures of short-carbon-fiber-reinforced SiC composites prepared by hot-pressing},
author = {Xiulan, He and Department of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001 and Yingkui, Guo and Yu, Zhou and Dechang, Jia},
abstractNote = {Microstructures of short-carbon-fiber-reinforced silicon carbide composites, prepared by hot-pressing with MgO-Al{sub 2}O{sub 3}-Y{sub 2}O{sub 3} as sintering additives, were investigated by means of X-ray diffractometry, scanning electron microscopy, and transmission electron microscopy. The results showed that the composites could be densified at a relatively low temperature of 1800 deg. C via the liquid-phase-sintering mechanism. The amorphous interphase in the composites not only avoided the direct contact of the fibers with the matrix, but also improved the fiber/matrix bonding, so they could improve the densification of the composites and avoid the degeneration of the carbon fiber. The nano silicon carbide derived from polycarbosilane, could play a role of improving the relative density of the composites.},
doi = {},
url = {https://www.osti.gov/biblio/21192578}, journal = {Materials Characterization},
issn = {1044-5803},
number = 12,
volume = 59,
place = {United States},
year = {Mon Dec 15 00:00:00 EST 2008},
month = {Mon Dec 15 00:00:00 EST 2008}
}