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Ei收录如下
Accession number: 20103313147544
Title: Effect of specific surface area on growth and porosity of oxide superconducting ceramic YBCO single domain
Authors: Zhang, C.P.1, 2, 4 ; Chaud, X.3 ; Cao, H.T.1 ; Beaugnon, E.3, 4 ; Zhou, L.1, 2
Author affiliation: 1 State Key Laboratory of Solidification Processing, Northwest Polytechnical University, Xi'an, 710072, China
2 Northwest Institute for Non-ferrous Metal Research, SMRC, Xi'an, 710016, China
3 CRETA/CNRS, BP166, Grenoble Cedex 9, 38042, France
4 Physical Material Dept., Universite Joseph Fourier, Grenoble, 38000, France
Corresponding author: Zhang, C. P. (zhangcp6813@c-nin.com)
Source title: Key Engineering Materials
Abbreviated source title: Key Eng Mat
Volume: 434-435
Monograph title: High-Performance Ceramics VI
Issue date: 2010
Publication year: 2010
Pages: 346-349
Language: English
ISSN: 10139826
CODEN: KEMAEY
ISBN-10: 0878492747
ISBN-13: 9780878492749
Document type: Conference article (CA)
Conference name: 6th China International Conference on High-Performance Ceramics, CICC-6
Conference date: August 16, 2009 - August 19, 2009
Conference location: Harbin, China
Conference code: 81390
Sponsor: The Chinese Ceramic Society
Publisher: Trans Tech Publications Ltd, Laubisrutistr.24, Stafa-Zuerich, CH-8712, Switzerland
Abstract: The effect of specific surface area on the growth and the porosity of oxide ceramic superconductor YBCO single domain are investigated. The enhancement of growth depth depends on the large specific surface area σ. When the specific surface area σ is more than the critical value 200mm 2/g, the YBCO single domain is full-growth in the sample of size Φ20mm×18mm. It reveals that a large specific surface area providing an effective tunnel of oxygen diffusion for the crystal growth. On the other hand, this tunnel makes oxygen gas emitting out resulting in porosity diameter decreased. The mean porosity diameter is observed as 5μm in hole sample smaller than 80μm in plain sample. The porosity distribution is calculated as 1/(100μm)2 in plain sample and 8/(10μm)2 in hole sample. © (2010) Trans Tech Publications.
Number of references: 12
Main heading: Porosity
Controlled terms: Ceramic superconductors - Grain boundaries - Oxygen - Specific surface area - Superconductivity - Yttrium barium copper oxides
Uncontrolled terms: Critical value - Growth - Oxide ceramics - Oxygen diffusion - Oxygen gas - Porosity distributions - Single domains - Superconducting ceramics
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 812.1 Ceramics - 804.2 Inorganic Compounds - 804 Chemical Products Generally - 933.1 Crystalline Solids - 708.3.1 High Temperature Superconducting Materials - 701.1 Electricity: Basic Concepts and Phenomena - 531.2 Metallography - 423 Non Mechanical Properties and Tests of Building Materials - 708.3 Superconducting Materials
DOI: 10.4028/www.scientific.net/KEM.434-435.346
Database: Compendex
Compilation and indexing terms, © 2010 Elsevier Inc. |
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