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
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 04期
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.
引用
收藏
页码：5645 / 5651
页数：7
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