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C P Zhang, X Chaud, H T Cao, E Beaugnon, and L Zhou. Effect of Specific Surface Area on Growth and Porosity of Oxide Superconducting Ceramic YBCO Single Domain. Key Engineering Materials. 2010, 434-435: 346-349
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VR 1.0
PT  S
AU  Zhang, CP
Chaud, X
Cao, HT
Beaugnon, E
Zhou, L
AF  Zhang, C. P.
Chaud, X.
Cao, H. T.
Beaugnon, E.
Zhou, L.
ED  Pan, W; Gong, J
TI  Effect of Specific Surface Area on Growth and Porosity of Oxide Superconducting Ceramic YBCO Single Domain
SO  HIGH-PERFORMANCE CERAMICS VI
SE  Key Engineering Materials
LA  English
DT  Proceedings Paper
CT  6th China International Conference on High-Performance Ceramics (CICC-6)
CY  AUG 16-19, 2009
CL  Harbin, PEOPLES R CHINA
SP  Chinese Ceram Soc, Harbin Inst Technol, Ctr Composite Mat, Tsinghua Univ, State Key Lab New Ceram & Fine Processing, Chinese Ceram Soc, Adv Ceram Div
DE  Superconductor YBCO; Specific surface area; Growth; Porosity
ID  ARTIFICIAL HOLES; BULKS; FABRICATION; CRYSTAL; SAMPLES
AB  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 sigma. When the specific surface area sigma is more than the critical value 200mm(2)/g, the YBCO single domain is full-growth in the sample of size Phi 20mmx 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 5 mu m in hole sample smaller than 80 mu m in plain sample. The porosity distribution is calculated as 1/(100 mu m)(2) in plain sample and 8/(10 mu m)(2) in hole sample.
C1  [Zhang, C. P.; Cao, H. T.; Zhou, L.] NW Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China.
RP  Zhang, CP, NW Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China.
EM  zhangcp6813@c-nin.com
NR  12
TC  0
PU  TRANS TECH PUBLICATIONS LTD
PI  STAFA-ZURICH
PA  LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND
SN  1013-9826
J9  KEY ENG MAT
PY  2010
VL  434-435
BP  346
EP  349
DI  10.4028/www.scientific.net/KEM.434-435.346
PG  4
SC  Materials Science, Ceramics; Materials Science, Composites
GA  BPZ23
UT  ISI:000280417300093
ER  

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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 ¦Ò. When the specific surface area ¦Ò is more than the critical value 200mm 2/g, the YBCO single domain is full-growth in the sample of size ¦µ20mm¡Á18mm. 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 5¦Ìm in hole sample smaller than 80¦Ìm in plain sample. The porosity distribution is calculated as 1/(100¦Ìm)2 in plain sample and 8/(10¦Ìm)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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haitaoapple(½ð±Ò+5): 2010-12-16 09:06:17
haitaoapple(½ð±Ò+5): 2010-12-21 10:15:33
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×÷Õß: Zhang, CP (Zhang, C. P.); Chaud, X (Chaud, X.); Cao, HT (Cao, H. T.); Beaugnon, E (Beaugnon, E.); Zhou, L (Zhou, L.)
±àÕß: Pan, W; Gong, J
±êÌâ: Effect of Specific Surface Area on Growth and Porosity of Oxide Superconducting Ceramic YBCO Single Domain
À´Ô´³ö°æÎï: HIGH-PERFORMANCE CERAMICS VI, 434-435: 346-349 2010
´ÔÊé±êÌâ: Key Engineering Materials
»áÒé±êÌâ: 6th China International Conference on High-Performance Ceramics (CICC-6)
»áÒéÈÕÆÚ: AUG 16-19, 2009
»áÒ鵨µã: Harbin, PEOPLES R CHINA
»áÒéÔÞÖúÉÌ: Chinese Ceram Soc.; Harbin Inst Technol, Ctr Composite Mat.; Tsinghua Univ, State Key Lab New Ceram & Fine Processing.; Chinese Ceram Soc, Adv Ceram Div.
×÷Õ߹ؼü´Ê: Superconductor YBCO; Specific surface area; Growth; Porosity
KeyWords Plus: ARTIFICIAL HOLES; BULKS; FABRICATION; CRYSTAL; SAMPLES
ÕªÒª: 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 sigma. When the specific surface area sigma is more than the critical value 200mm(2)/g, the YBCO single domain is full-growth in the sample of size Phi 20mmx 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 5 mu m in hole sample smaller than 80 mu m in plain sample. The porosity distribution is calculated as 1/(100 mu m)(2) in plain sample and 8/(10 mu m)(2) in hole sample.
µØÖ·: [Zhang, C. P.; Cao, H. T.; Zhou, L.] NW Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
ͨѶ×÷ÕßµØÖ·: Zhang, CP, NW Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China.
µç×ÓÓÊÏ䵨ַ: zhangcp6813@c-nin.com
ÒýÓõIJο¼ÎÄÏ×Êý: 12
±»ÒýƵ´Î: 0
³ö°æÉÌ: TRANS TECH PUBLICATIONS LTD
³ö°æÉ̵ØÖ·: LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND
ISSN: 1013-9826
DOI: 10.4028/www.scientific.net/KEM.434-435.346
29 ×Ö·ûµÄÀ´Ô´³ö°æÎïÃû³ÆËõд: KEY ENG MAT
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ISI ÎÄÏ×´«µÝºÅ: BPZ23
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