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Microstructural Variations in SiC Ceramics Sintered with AlN-Y2O3

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Abstract:

In this work, SiC ceramics were prepared by liquid phase sintering using 10 wt.% of AlN and Y2O3 mixtures in the proportion of 4:1 and 2:3 as additives Sintering was done in a graphite resistance heated furnace at 2080oC under 0.2 MPa N2 atmosphere for 1h. Part of the samples was further heat-treated at 2000oC for 4h to allow grain growth. The microstructures of the sintered samples were analyzed using polished and plasma etched surfaces. Furthermore, relative densities, weight loss during sintering and SiC-polytype distributions are reported.

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Periodical:

Materials Science Forum (Volumes 530-531)

Pages:

532-537

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.530-531.532

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Online since:

November 2006

Authors:

Kurt Strecker, Claudinei dos Santos, M.J. Bondioli, Michael J. Hoffmann

Keywords:

Liquid Phase Sintering (LPS), Microstructure, Silicon Carbide (SiC)

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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