STRUCTURE AND PHASE-DIAGRAM OF ZRO2-CEO2 CERAMICS

被引：30

作者：

MUROI, T ^{[1
]}

ECHIGOYA, J ^{[1
]}

SUTO, H ^{[1
]}

机构：

[1] TOHOKU UNIV,FAC ENGN,DEPT MAT PROC,SENDAI,MIYAGI 980,JAPAN

来源：

TRANSACTIONS OF THE JAPAN INSTITUTE OF METALS | 1988年 / 29卷 / 08期

关键词：

HEAT TREATMENT - Annealing - MICROSCOPIC EXAMINATION - Transmission Electron Microscopy - X-RAY ANALYSIS;

D O I：

10.2320/matertrans1960.29.634

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Microstructures of ZrO//2-CeO//2 ceramics were investigated with arc-melted specimens by means of TEM, TEM-EDX, ED and XRD. (1) As-cst specimens with more than 15 mol percent CeO//2 consisted of a relatively stable cubic phase having super sub-lattice of O**2** minus ions. The reciprocal lattice was obtained. (2) By annealing the cubic phase in air, the superstructure disappeared, and the transition from cubic to tetragonal phases easily took place. (3) During prolonged annealing a nucleation-growth type coherent precipitation took place. (4) Phase boundaries of the cubic and tetragonal phases in the diagram of the ZrO//2-CeO//2 system were determined. (5) Sintered 12 mol percent CeO//2 transformed easily into a monoclinic phase by pulverizing.

引用

页码：634 / 641

页数：8

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