Mitra, B L and Biswas, Narayan Chandra and Aggarwal, P S (1992) Thermomechanical properties and microstructure of alumina-zirconia. Bulletin of Materials Science, 15 (2). pp. 131-141. ISSN 0250-4707

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Al2O3-ZrO2 composites were prepared in two compositional ranges, 15 wt% ZrO2 and 29 wt% ZrO2 with or without yttria or magnesia stabilizers. While 1.5 wt% Y2O3 produced tetragonal ZrO2 and fine grain microstructure, the 4.5 wt% Y2O3 developed cubic and tetragonal ZrO2 with similar microstructure. Al2O3 with 29.5 wt% ZrO2-1.5 wt% Y2O3 composition had the highest strength (3,300 kg/cm2). The bending strength remained more or less the same after the first thermal shock, and then it decreased gradually, but retained some strength after 20 cycles of quench. The load vs displacement curve became nonlinear after thermal shock possibly because of formation of microcracks which could be seen by microstructural studies.

Item Type: Article
Subjects: Microstructure and Characterization
Engineering Materials
Depositing User: Bidhan Chaudhuri
Date Deposited: 28 Nov 2013 07:19
Last Modified: 28 Feb 2016 17:15

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