Phase transformation in the surface region of zirconia and doped zirconia detected by UV Raman spectroscopy

	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
卷号	5 期号:23 页码:5326-5332
产权排序	1;1
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.
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
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000187086000028
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/82937]
专题	大连化学物理研究所_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
推荐引用方式 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.