RECOVERY OF CRACK-TIP TRANSFORMATION ZONES IN ZIRCONIA AFTER HIGH-TEMPERATURE ANNEALING

被引：2
|
作者：
SHAW, MC
MARSHALL, DB
HEUER, AH
INGHELS, E
机构：
[1] ROCKWELL INT CORP,CTR SCI,THOUSAND OAKS,CA 91360
[2] CASE WESTERN RESERVE UNIV,DEPT MAT SCI & ENGN,CLEVELAND,OH 44106
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1992年 / 75卷 / 02期
关键词：
D O I：
10.1111/j.1151-2916.1992.tb08204.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：
Annealing at temperatures between 500-degrees and 1000-degrees-C reverses the stress-induced tetragonal-to-monoclinic phase transformation in precipitates within crack-tip zones in MgO-partially-stabilized ZrO2 (Mg-PSZ). The stability of such reverse-tranformed tetragonal precipitates during subsequent room-temperature aging has been examined using Raman spectroscopy, surface displacement measurements, and crack-opening measurements. Partial spontaneous retransformation of material within the original zone from tetragonal-to-monoclinic symmetry occurred over periods of several months.
引用
收藏
页码：474 / 476
页数：3
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