Tripathi, Himansu Shekhar and Singla, S and Ghosh, Arup (2009) Synthesis and densification behaviour of magnesium aluminate spinel: Effect of Dy(2)O(3). Ceramics International, 35 (6). pp. 2541-2544. ISSN 0272-8842

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Abstract

Magnesium aluminate spinels have been developed by reaction sintering of calcined alumina and calcined magnesia and its densification behaviour was studied in presence of Dy(2)O(3). Green bar made from stoichiometric spinel composition with and without Dy(2)O(3) Were subjected to dilatometric study, densification study and microstructural evaluation by SEM. It was found that Dy(2)O(3) additive does not have significant effect on the spinelisation but favours the densification of the spinel. Microstructure of sintered spinel without any additive is non-uniform with some exaggerated grain growth. Dy(2)O(3) prevents the exaggerated grain growth and thereby helps in the densification process. (C) 2009 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	Sintering; Thermal expansion; Spinels
Subjects:	Refractories
Divisions:	Refractory
Depositing User:	Bidhan Chaudhuri
Date Deposited:	02 Mar 2012 08:01
Last Modified:	02 Mar 2012 08:01
URI:	http://cgcri.csircentral.net/id/eprint/1128

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