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Influence of carbon on phase stability of tetragonal ZrO2
被引:22
|作者:
Xiang, Huimin
[1
]
Lu, Xinpo
[1
]
Li, Jingjing
[1
]
Chen, Jixin
[1
]
Zhou, Yanchun
[2
]
机构:
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] ARIMPT, Sci & Technol Funct Lab, Beijing 100076, Peoples R China
关键词:
Carbon;
Zirconia;
Phase transformation;
Doping;
X-RAY-ABSORPTION;
ZIRCONIA STABILIZATION;
OXYGEN;
TRANSITION;
DOPANTS;
D O I:
10.1016/j.ceramint.2013.10.159
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:
In the present work, nanocrystnifite ZrO2 was synthesized by calcining zirconium (IV) acetylacetonate. X-ray diffraction results show the existence of tetragonal phase even when the nanocrystallite size reached 47 nm. The presence of amorphous carbon was identified by Raman analysis while the Zr-C bonding was confirmed by X-ray photoelectron spectroscopy analysis. Transmission electron microscopy showed no hard-agglomeration in the samples treated at high temperatures. These results indicated that carbon has influence on the phase stability of t-ZrO2 in two aspects: the amorphous carbon creates a reducing atmosphere, meanwhile carbon atoms bonded with zirconium atoms act as a stabilizer. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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页码:5645 / 5651
页数:7
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