Phase formation and lattice distortion of Lu2O3-doped ZrO2 in comparison with Y2O3-doped ZrO2

被引：7

作者：

Park, Min-sung ^{[1
]}

Kim, Buyoung ^{[2
]}

Kim, Taewoo ^{[1
]}

Hong, Eunpyo ^{[1
]}

Lee, Heesoo ^{[1
]}

机构：

[1] Pusan Natl Univ, Sch Mat Sci & Engn, Busan 46241, South Korea

[2] HyMAR Corp, Busan, South Korea

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2020年 / 17卷 / 03期

关键词：

comparable tripositive ion; crystal structure; Lu2O3-doped ZrO2; nanoindentation; phase formation;

D O I：

10.1111/ijac.13448

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：

Lu2O3 and Y2O3 doping of 8, 11, and 18 mol% in ZrO2 were prepared by solid solution reaction, aiming to study the phase stabilization of Lu2O3-doped ZrO2 and Y2O3-doped ZrO2 in terms of phase formation and lattice distortion. The Rietveld refinement results indicated that Lu2O3-doped ZrO2 and Y2O3-doped ZrO2 followed the same trend in terms of cubic phase fraction, increasing from 25%-30% (8 mol%) to 95%-100% (11 and 18 mol%). This phase formation was confirmed by observing the same diffraction ring pattern observed for the Lu2O3-doped ZrO2 and Y2O3-doped ZrO2. The Vickers hardness of the Lu2O3-doped ZrO2 was 4.3% higher than that of Y2O3-doped ZrO2 at 8 mol%, but 9.7% and 14.8% lower at 11 and 18 mol%, respectively. This was likely caused by the lattice distortion effect of Y2O3 doping overpowering the field strength difference between Lu3+ and Y3+.

引用

页码：1224 / 1230

页数：7

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