The cubic-tetragonal phase equilibria in the ZrO2-R(2)O(3) (R=Y, Gd, Sm, Nd) systems

被引：38

作者：

Katamura, J ^{[1
]}

Seki, T ^{[1
]}

Sakuma, T ^{[1
]}

机构：

[1] UNIV TOKYO,FAC ENGN,DEPT MAT SCI,TOKYO 113,JAPAN

来源：

JOURNAL OF PHASE EQUILIBRIA | 1995年 / 16卷 / 04期

关键词：

D O I：

10.1007/BF02645287

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The cubic-tetragonal (c-t) phase equilibria in the ZrO2-R(2)O(3) (R = Nd, Sm, Gd, Y) systems are examined both experimentally and theoretically, The width of the c-t two-phase field is not simply described as a function of oxygen vacancies as proposed by Hillert and Sakuma (Ref 6) but is dependent on ionic radius of trivalent cations, The larger the ionic radius, the wider the two-phase field, The result is satisfactorily explained by the addition of the excess energy term caused by strain energy in cubic solid solutions to the original model.

引用

页码：315 / 319

页数：5

共 24 条

[1]

ACKERMANN RJ, 1975, HIGH TEMP SCI, V7, P304

[2] THE POLYMORPHIC TRANSFORMATIONS OF ZIRCONIA [J].