Microstructure Development in Al , O , - Platelet - Reinforced Ce - ZrO , / Al * OS Composites
نویسندگان
چکیده
Composites containing Ce-Zr02, Al,O,, and aligned A1202 platelets were produced by centrifugal consolidation and pressureless sintering, followed by beat 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 trom suspension processing.
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