QUENCHED METASTABLE GLASSY AND CRYSTALLINE PHASES IN THE SYSTEM LITHIUM-SODIUM-POTASSIUM METATANTALATE

被引：50

作者：

NASSAU, K

WANG, CA

GRASSO, M

机构：

[1] Bell Laboratories, Murray Hill, New Jersey

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1979年 / 62卷 / 1-2期

关键词：

D O I：

10.1111/j.1151-2916.1979.tb18810.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：

A twin‐roller apparatus was used to quench 21 melts in the three pseudobinary systems and in the pseudoternary system composed of LiTaO3, NaTaO3, and KTaO3. Glasses were obtained in all but the high‐Na region. X‐ray diffraction and differential thermal analysis studies of the metastable compositions showed that there were two metastable crystalline phases when the materials crystallized; one phase was a defect pyrochlore structure centered at KTaO3 and the other appeared at Li0.8K0.2TaO3. The metastable phases subsequently transformed into the expected stable phases on heating. There is some evidence for a subsolidus two‐glass region in the system (K,Na)TaO3. Copyright © 1979, Wiley Blackwell. All rights reserved

引用

页码：74 / 79

页数：6

共 32 条

[1] A RAPID QUENCHING TECHNIQUE FOR PREPARATION OF THIN UNIFORM FILMS OF AMORPHOUS SOLIDS [J].