DICP OpenIR
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
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
2003-12-01
DOI10.1039/b310284j
Volume5Issue:23Pages:5326-5332
Indexed BySCI
SubtypeArticle
Department503
Funding Project503
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordPARTIALLY-STABILIZED ZIRCONIA ; MICROSTRUCTURAL DEVELOPMENT ; TETRAGONAL ZIRCONIA ; ZRO2 ; OXIDE ; EVOLUTION ; VAPOR
AbstractThe 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.
Language英语
URL查看原文
WOS IDWOS:000187086000028
Citation statistics
Cited Times:47[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/82937
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
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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