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Fabrication and Characterization of β-SiAION Components from Polymeric Precursors

Published online by Cambridge University Press:  25 February 2011

G.D. Soraru ,
V. M. Sglavo ,
F. Vulcan  and
F. Babonneau
G.D. Soraru
Affiliation:
Dipartimento di Ingegneria dei Materiali, Università di Trento, 38050, Mesiano-Trento, Italy
V. M. Sglavo
Affiliation:
Dipartimento di Ingegneria dei Materiali, Università di Trento, 38050, Mesiano-Trento, Italy
F. Vulcan
Affiliation:
Dipartimento di Ingegneria dei Materiali, Università di Trento, 38050, Mesiano-Trento, Italy
F. Babonneau
Affiliation:
Chimie de la Matière Condensée, Université Paris 6, 4 place Jussieu, 75252 Paris, France
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Abstract

This paper reports on the fabrication of microcrystalline β-SiAlON components by direct nitridation of polymeric green compacts. The preceramic material was obtained from a polycarbosilane modified with an aluminum alkoxide. The microstructural transformation from the polymeric bodies to the final dense ceramic components was monitored by several techniques such as BET, XRD and dilatometry. Mechanical characterization, performed by indentation at various stages of the conversion process, will also be presented.

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