Sintering and Characterization of Polycrystalline Monoclinic, Tetragonal, and Cubic Zirconia

Autor:	Raymond A. Cutler, James R. Reynolds, Aaron Jones
Rok vydání:	1992
Předmět:	Crystallography Tetragonal crystal system Materials science Materials Chemistry Ceramics and Composites Mineralogy Sintering Cubic zirconia Crystallite Crystal structure Atmospheric temperature range Microstructure Monoclinic crystal system
Zdroj:	Journal of the American Ceramic Society. 75:2173-2183
ISSN:	1551-2916 0002-7820
DOI:	10.1111/j.1151-2916.1992.tb04480.x
Popis:	This paper reports that polycrystalline monoclinic (m), tetragonal (t), and cubic (c) ZrO[sub 2], sintered at 1500[degrees]C, were annealed in the cubic stability field and rapidly cooled to permit the displacive c [yields] t[sup 1] transformation to occur in compositions containing 0-6 mol% Y[sub 2]O[sub 3]. The bulk fracture toughness of coarse-grained ([gt] 25[mu]m) m, t[sup 1], and c zirconias were compared with conventionally sintered, fine-grained (typically less than 1 [mu]m) materials. The ferroelastic monoclinic and tetragonal zirconias were more than twice as tough as paraelastic cubic zirconia.
Databáze:	OpenAIRE
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