Nanocrystalline rare earth stabilized zirconia: solvothermal synthesis   via heterogeneous nucleation-growth mechanism, and electrical properties

doi:10.1039/b109091g

CORC > 北京大学 > 化学与分子工程学院

	Nanocrystalline rare earth stabilized zirconia: solvothermal synthesis via heterogeneous nucleation-growth mechanism, and electrical properties
	Zhang, YW ; Xu, G ; Yan, ZG ; Yang, Y ; Liao, CS ; Yan, CH
刊名	材料化学杂志
	2002
关键词	HYDROTHERMAL SYNTHESIS DOPED ZIRCONIA TRANSPORT-PROPERTIES SOLID-SOLUTIONS LOW-TEMPERATURE THIN-FILMS POWDERS PARTICLES HYDROLYSIS CONDUCTIVITY
DOI	10.1039/b109091g
英文摘要	Homogeneous nanocrystalline (ZrO2)(0.92) (RE2O3)(0.08) (RE = Y, Sc) with large specific surface areas and cubic structure were solvothermally synthesized from the urea coprecipitated (Zr, RE)- hydroxide gel or the gel-calcined oxide in water (or absolute ethanol) under mild conditions. Both the hydroxide and the oxide powders showed very high solvothermal reactivity. Mainly by X-ray diffraction and transmission electron microscopy, the solvothermal mechanism was explored. The heterogeneous nucleation-growth, i.e. an in situ transformation of hydrous (Zr, RE)- oxide with an ordered cubic structure via dissolution and recrystallization is supposed to predominately account for the nanocrystalline crystallization. The as-obtained nanocrystallite exhibited a good sinterability. Over the temperature range of 360-600 degreesC, nanocrystalline (ZrO2)(0.92) (Y2O3)(0.08) displayed enhanced specific grain boundary conductivity due to the size-dependent grain boundary impurity segregation.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000174550000029&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Physical; Materials Science, Multidisciplinary; SCI(E); 25; ARTICLE; 4; 970-977; 12
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/210045]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhang, YW,Xu, G,Yan, ZG,et al. Nanocrystalline rare earth stabilized zirconia: solvothermal synthesis via heterogeneous nucleation-growth mechanism, and electrical properties[J]. 材料化学杂志,2002.
APA	Zhang, YW,Xu, G,Yan, ZG,Yang, Y,Liao, CS,&Yan, CH.(2002).Nanocrystalline rare earth stabilized zirconia: solvothermal synthesis via heterogeneous nucleation-growth mechanism, and electrical properties.材料化学杂志.
MLA	Zhang, YW,et al."Nanocrystalline rare earth stabilized zirconia: solvothermal synthesis via heterogeneous nucleation-growth mechanism, and electrical properties".材料化学杂志 (2002).