Das, Kaberi and Banerjee, G (2000) Mechanical properties and microstructures of reaction sintered mullite-zirconia composites in the presence of an additive - dysprosia. Journal of the European Ceramic Society, 20 (2 ). 153 -157 . ISSN 0955-2219

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Abstract

Mullite-zirconia composites were prepared from Indian zircon flour and calcined alumina following the reaction sintering route. Zircon hour and calcined alumina with 0-4.5 mol% dysprosium oxide were attrition milled followed by isostatic pressing and sintering at 1400-1650 degrees C for 2 h. Significant densification was achieved after dysprosia addition as an additive. The thermal expansion coefficient values were found to be reduced in the presence of dysprosia. Dysprosia helps in densification by liquid phase formation as well as by stabilisastion in tetragonal zirconia state. The thermo-mechanical and microstructural characteristics of the composites were discussed.

Item Type:	Article
Uncontrolled Keywords:	reaction sintering; mullite; ZrO2; thermal expansion coefficient; microstructure-final; composites
Subjects:	Microstructure and Characterization
Divisions:	UNSPECIFIED
Depositing User:	Mrs Chandana Patra
Date Deposited:	09 Feb 2012 10:02
Last Modified:	16 May 2012 07:24
URI:	http://cgcri.csircentral.net/id/eprint/713

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