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Microstructure Development in Al2O3-Platelet-Reinforced Ce-ZrO2/Al2O3 Composites

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Composites containing Ce-ZrO2, Al2O3, and aligned Al2O3 platelets were produced by centrifugal consolidation and pressureless sintering, followed by heat treatments at 1600°C for varied duration. Constituents in the consolidated microstructures were either uniformly distributed throughout or segregated into gradient layers, depending critically on platelet content. Quantitative image analysis was used to examine microstructure development with heat treatment. Changes in the volume fraction, dimensional anisotropy, and gradient of pores and platelets, as well as changes in the phase gradient, were quantified. Microstructure development was strongly dependent on the initial microstructure design attained from suspension processing.

Document Type: Research Article


Affiliations: School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907

Publication date: 1997-01-01

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