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学科主题: 物理化学
题名: UV Raman spectroscopic study on the surface phase of ZrO2 modified with Nd2O3
作者: Zhang, Jing1;  Yan, Song1;  Yuan, Mengqiong1;  Wang, Xiang2;  Li, Can2
通讯作者: JingZhang
关键词: ZrO2 ;  Surfaces ;  UV Raman spectroscopy ;  XRD ;  Nd2O3 ;  Characterization methods
刊名: MATERIALS LETTERS
发表日期: 2011-01-31
DOI: 10.1016/j.matlet.2010.10.002
卷: 65, 期:2, 页:201-204
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 503
产权排名: 2,4
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Materials Science, Multidisciplinary ;  Physics, Applied
摘要: UV Raman spectroscopic study on the surface phase of ZrO2 modified with Nd2O3
研究领域[WOS]: Materials Science ;  Physics
英文摘要: The Nd2O3 modified ZrO2 was synthesized using two methods of co-precipitation (Nd-ZrO2) and wet impregnation (Nd/ZrO2). The surface and bulk crystalline phases of Nd2O3 modified ZrO2 were investigated by using UV Raman spectroscopy, visible Raman spectroscopy, and X-ray diffraction (XRD). It is observed that the tetragonal phase in the surface region of Nd-ZrO2 was not effectively stabilized by Nd2O3, as Nd2O3 is mainly present in the bulk of Nd-ZrO2. However, in Nd/ZrO2, it is found that with the impregnation of 0.5 mol% Nd2O3 on ZrO2, the surface tetragonal phase of Nd/ZrO2 can be stabilized even after calcination at 700 degrees C. The UV Raman results indicate that a disordered structure, or intermediate structure, which is involved in the transition from the tetragonal to the cubic phase, is formed at the surface region of Nd/ZrO2. The formation of the aforementioned intermediate structure inhibits the phase transition from tetragonal to monoclinic in the surface region of Nd/ZrO2. Furthermore, it is observed that the mixed tetragonal and monoclinic phases in the surface region of ZrO2 which has been impregnated with Nd2O3 can also be stabilized after calcination at 700 degrees C. This work provides a simple method for controlling the surface phase of ZrO2 at high temperatures. (C) 2010 Elsevier B.V. All rights reserved.
关键词[WOS]: TETRAGONAL ZRO2 ;  ZIRCONIA ;  TRANSFORMATION ;  STABILIZATION ;  SCATTERING ;  STABILITY ;  CERAMICS ;  REGION
语种: 英语
WOS记录号: WOS:000286158000018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115737
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Liaoning Shihua Univ, Sch Chem & Mat Sci, Fushun 113001, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Zhang, Jing,Yan, Song,Yuan, Mengqiong,et al. UV Raman spectroscopic study on the surface phase of ZrO2 modified with Nd2O3[J]. MATERIALS LETTERS,2011,65(2):201-204.
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