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题名: Phase transformation in the surface region of zirconia and doped zirconia detected by UV Raman spectroscopy
作者: Li, MJ;  Feng, ZC;  Ying, PL;  Xin, Q;  Li, C
刊名: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
发表日期: 2003-12-01
DOI: 10.1039/b310284j
卷: 5, 期:23, 页:5326-5332
收录类别: SCI
文章类型: Article
部门归属: 503
项目归属: 503
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: The phase evolution of yttrium oxide and lanthanum oxide doped zirconia (Y2O3-ZrO2 and La2O3-ZrO2, respectively) from their tetragonal to monoclinic phase has been studied using UV Raman spectroscopy, visible Raman spectroscopy and XRD. UV Raman spectroscopy is found to be more sensitive at the surface region while visible Raman spectroscopy and XRD mainly give the bulk information. For Y2O3-ZrO2 and La2O3-ZrO2, the transformation of the bulk phase from the tetragonal to the monoclinic is significantly retarded by the presence of yttrium oxide and lanthanum oxide. However, the tetragonal phase in the surface region is difficult to stabilize, particularly when the stabilizer's content is low. The phase in the surface region can be more effectively stabilized by lanthanum oxide than yttrium oxide even though zirconia seemed to provide more enrichment in the surface region of the La2O3-ZrO2 sample than the Y2O3-ZrO2 sample, based on XPS analysis. The surface structural tension and the enrichment of the ZrO2, component in the surface region of ZrO2-Y2O3 and ZrO2-La2O3 might be the reasons for the striking difference between the phase change in the surface region and the bulk. Accordingly, the stabilized tetragonal surface region can significantly prevent the phase transition from developing into the bulk when the stabilizer's content is high.
关键词[WOS]: PARTIALLY-STABILIZED ZIRCONIA ;  MICROSTRUCTURAL DEVELOPMENT ;  TETRAGONAL ZIRCONIA ;  ZRO2 ;  OXIDE ;  EVOLUTION ;  VAPOR
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000187086000028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/82937
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Li, MJ,Feng, ZC,Ying, PL,et al. Phase transformation in the surface region of zirconia and doped zirconia detected by UV Raman spectroscopy[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2003,5(23):5326-5332.
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