CRITICAL PARTICLE-SIZE AND PHASE-TRANSFORMATION IN ZIRCONIA - TRANSMISSION ELECTRON-MICROSCOPY AND X-RAY-DIFFRACTION STUDIES

被引：79
|
作者：
SRINIVASAN, R [1 ]
RICE, L [1 ]
DAVIS, BH [1 ]
机构：
[1] UNIV KENTUCKY,DEPT MAT SCI & ENGN,LEXINGTON,KY 40506
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 11期
关键词：
particle size; phase transformations; transmission electron microscopy; X‐ray diffraction; zirconia;
D O I：
10.1111/j.1151-2916.1990.tb06492.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 study was undertaken to examine the crystallite size effect on the low‐temperature transformation of tettragonal zirconia. Zirconia weas prepared by precipitation from a solution of zirconium tetrachloride by adding ammonium hydroxide to produce a pH of 2.95. Portions of the sample, after drying, were calcined at 500°C for various time intervals. Phase transformation was followed by X‐ray diffraction; the data show that the tetragonal phase was initially formed and it was transformed to the monoclinic phase at longer periods of calcination. It was observed by TEM particle size and XRD crystallite size that the transformation does not appear to be due to a critical particle size effect. Copyright © 1990, Wiley Blackwell. All rights reserved
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页码：3528 / 3530
页数：3
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