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Microstructures of short-carbon-fiber-reinforced SiC composites prepared by hot-pressing
- Source :
-
Materials Characterization . Dec2008, Vol. 59 Issue 12, p1771-1775. 5p. - Publication Year :
- 2008
-
Abstract
- Abstract: Microstructures of short-carbon-fiber-reinforced silicon carbide composites, prepared by hot-pressing with MgO–Al2O3–Y2O3 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 °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. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 10445803
- Volume :
- 59
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Materials Characterization
- Publication Type :
- Academic Journal
- Accession number :
- 35327898
- Full Text :
- https://doi.org/10.1016/j.matchar.2008.04.006