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

页码：5645 / 5651

页数：7

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