Study on microstructures and mechanical properties of short-carbon-fiber-reinforced SiC composites prepared by hot-pressing

Autor:	Xiulan He, Yu Zhou, Dechang Jia, Yingkui Guo, Zemin Yu
Rok vydání:	2009
Předmět:	Materials science Mechanical Engineering Metal matrix composite Sintering Condensed Matter Physics Hot pressing Microstructure Carbide Amorphous solid chemistry.chemical_compound chemistry Mechanics of Materials Silicon carbide Relative density General Materials Science Composite material
Zdroj:	Materials Science and Engineering: A. 527:334-338
ISSN:	0921-5093
DOI:	10.1016/j.msea.2009.08.004
Popis:	Short-carbon-fiber-reinforced silicon carbide composites were prepared by hot-pressing with SiC powder, Polycarbosilane as precursor polymer and MgO–Al 2 O 3 –Y 2 O 3 as sintering additives. The phase composition, microstructure and mechanical properties of the composites with different Polycarbosilane content were investigated. The results showed that, dense composites could be prepared at a relatively low temperature of 1800 °C via the liquid-phase-sintering mechanism and the highest mechanical property was obtained for the composites with 20 wt.% PCS and 8 wt.% sintering additives. The amorphous interphase formed during sintering process in the composites not only contributed to the densification of the composites, but also improved the fiber–matrix bonding. The nano-silicon carbide derived from Polycarbosilane, could also play a role of improving the relative density of the composites.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::646cdc8ebaa1d3ee1b875d8413e29939 https://doi.org/10.1016/j.msea.2009.08.004 Zobrazit plný text záznamu Full Text from ScienceDirect