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Phase transformation in the surface region of zirconia and doped zirconia detected by UV Raman spectroscopy
Li, MJ; Feng, ZC; Ying, PL; Xin, Q; Li, C
刊名PHYSICAL CHEMISTRY CHEMICAL PHYSICS
2003-12-01
DOI10.1039/b310284j
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
关键词[WOS]PARTIALLY-STABILIZED ZIRCONIA ; MICROSTRUCTURAL DEVELOPMENT ; TETRAGONAL ZIRCONIA ; ZRO2 ; OXIDE ; EVOLUTION ; VAPOR
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.
语种英语
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WOS记录号WOS:000187086000028
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被引频次:45[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/82937
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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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.
APA Li, MJ,Feng, ZC,Ying, PL,Xin, Q,&Li, C.(2003).Phase transformation in the surface region of zirconia and doped zirconia detected by UV Raman spectroscopy.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,5(23),5326-5332.
MLA Li, MJ,et al."Phase transformation in the surface region of zirconia and doped zirconia detected by UV Raman spectroscopy".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 5.23(2003):5326-5332.
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