Bandyopadhyay, Siddhartha and Halder, Rupa and Bysakh, Sandip and Biswas, Mita and Haldar, Barun (2015) Z < 60-Rare earth promoted alpha-Si3N4 solid solution: Praseodymium. Journal of the European Ceramic Society, 35 (14). pp. 4011-4016. ISSN 0955-2219

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Abstract

So long, larger sized rare earth cations than Neodymium (Z=60) were reported to form alpha-SiAlON either in a multi-cation system containing smaller cations or by following special processing conditions. In this study, Praseodymium (Z=59) alone is observed for the first time to promote alpha-SiAlON as a single crystalline phase, prepared under conventional processing conditions of heating and cooling cycle. The appearance of alpha-SiAlON is restricted to the compositional area corresponding to a high level substitution of m(RE1/3Al-N) for m(Si-N) bonds. Microstructure exhibits strain contrast in grains and array of dislocations in low angle grain boundary indicating deformation in lattice. (C) 2015 Elsevier Ltd. All rights reserved.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	Non-Oxide Ceramics & Composites
Depositing User:	Bidhan Chaudhuri
Date Deposited:	09 Dec 2015 11:33
Last Modified:	09 Dec 2015 11:33
URI:	http://cgcri.csircentral.net/id/eprint/2921

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