Das, K and Mukherjee, B and Banerjee, Goutam (1993) Mechanical properties and microstructural character of isopressed reaction sintered mullite-zirconia composites. Transactions of the Indian Ceramic Society, 52 (2). 47-50,55. ISSN 0371-750X

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Abstract

Zircon flour and alumina mixtures, fabricated in the form of discs, rods and bars, were cold isostatically pressed and sintered. The resulting mullite-zirconia composites were characterized in terms of mechanical properties and microstructural features. The effect of yttria addition on the final properties is also reported. Fine zircon and alumina mixtures with yttria addition resulted in dense composites with uniformly distributed rounded zirconia particles. A sintering temperature of 1550°C with two hours soaking yielded the best results in terms of fired density, flexural strength, fracture toughness, microhardness and tetragonal (t-) ZrO2, content Addition of 1.86 and 3.0 wt% Y2O3, resulted in significant improvement in terms of strength and t-Zr02 content A drop in the t-ZrO2 content with relatively large grain size was observed when the sintering temperature was raised to 1650°C.

Item Type:	Article
Subjects:	Refractories
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	28 Aug 2013 12:34
Last Modified:	05 Mar 2016 13:56
URI:	http://cgcri.csircentral.net/id/eprint/2063

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