THE CALCIA ZIRCONIA PHASE-DIAGRAM REVISITED - STABILITY OF THE ORDERED PHASES PHI-1 AND PHI-2

被引：14

作者：

DICKERSON, RM ^{[1
]}

HEUER, AH ^{[1
]}

机构：

[1] CASE WESTERN RESERVE UNIV,DEPT MAT SCI & ENGN,CLEVELAND,OH 44106

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1991年 / 74卷 / 01期

关键词：

D O I：

10.1111/j.1151-2916.1991.tb07325.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Single crystals of CaO-stabilized ZrO2 containing between 15.3 and 18.9 mol% CaO were heat-treated for 5000 h at 1200-degrees-C to study the stability of the ordered defect-fluorite phase, CaZr4O9 (phi-1). Subsequent TEM analysis of the equiaxed-phi-1 domains in samples richer than approximately 18 mol% in CaO showed a random distribution of phi-1 variants, with no preferred interfacial habit planes. A critical review of the literature, combined with the new data, supports the Stubican-Hellmann-Hannon version of the phase diagram in the region 15 to 26 mol% CaO and 1000-degrees to 1400-degrees-C and strongly suggests that phi-1 is a stable phase in the ZrO2-CaO systems.

引用

页码：234 / 237

页数：4

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