ELECTRON-MICROSCOPIC OBSERVATION OF RAPIDLY COOLED ZRO2-3 MOL-PERCENT SM2O3 FROM THE MELT

被引：3

作者：

HAYAKAWA, M ^{[1
]}

ONDA, Y ^{[1
]}

OKA, M ^{[1
]}

YOSHIMURA, M ^{[1
]}

YASHIMA, M ^{[1
]}

机构：

[1] TOKYO INST TECHNOL, ENGN MAT RES LAB, MIDORI KU, YOKOHAMA, KANAGAWA 227, JAPAN

来源：

JOURNAL OF MATERIALS SCIENCE | 1993年 / 28卷 / 22期

关键词：

D O I：

10.1007/BF00365022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electron microscopic observation was made on ZrO2-3 mol % Sm2O3 specimens prepared from the melt using two different cooling rates, namely rapid quenching using a hammer-anvil apparatus and free cooling-on a water-cooled copper hearth. The observed microscopic features, such as fully tetragonal grains with parallel twins or herringbone structure, anti-phase boundary contrast in a dark-field image, tweed structure, etc., were found to be quite similar to those observed in similarly prepared ZrO2-3 mol % Y2O3 specimens. It was specifically noted that the tweed structure, which requires atomic diffusion, was not suppressed by the rapid quenching, indicating a very fast growth rate. Trace analysis was also conducted on the tweed structure observed in freely cooled specimens.

引用

页码：6066 / 6069

页数：4