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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Reddy, A. A.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2015Development of bilayer glass-ceramic SOFC sealants via optimizing the chemical composition of glasses—a reviewcitations
- 2015Influence of strontium oxide on structural transformations in diopside-based glass-ceramics assessed by diverse structural toolscitations
- 2015Synthesis and in vitro bioactivity assessment of injectable bioglass-organic pastes for bone tissue repaircitations
- 2014Bi-layer glass-ceramic sealant for solid oxide fuel cellscitations
- 2014Effect of strontium-to-calcium ratio on the structure, crystallization behavior and functional properties of diopside-based glassescitations
- 2014Thermal and mechanical stability of lanthanide-containing glass-ceramic sealants for solid oxide fuel cellscitations
- 2013Melilite glass-ceramic sealants for solid oxide fuel cells: Effects of ZrO2 additions assessed by microscopy, diffraction and solid-state NMRcitations
- 2013SrO-containing diopside glass-ceramic sealants for solid oxide fuel cells: Mechanical reliability and thermal shock resistancecitations
- 2013Study of calcium-magnesium-aluminum-silicate (CMAS) glass and glass-ceramic sealant for solid oxide fuel cellscitations
- 2013Sintering and devitrification of glass-powder compacts in the akermanite-gehlenite systemcitations
- 2013Diopside-Ba disilicate glass-ceramic sealants for SOFCs: Enhanced adhesion and thermal stability by Sr for Ca substitutioncitations
- 2013Aluminosilicate-based sealants for SOFCs and other electrochemical applications - A brief reviewcitations
- 2012Influence of the annealing temperatures on the photoluminescence of KCaBO<inf>3</inf>:Eu<sup>3+</sup>phosphorcitations
- 2012Sintering behavior of lanthanide-containing glass-ceramic sealants for solid oxide fuel cellscitations
- 2012Study of melilite based glasses and glass-ceramics nucleated by Bi 2O3 for functional applications PDFcitations
- 2012Diopside - Mg orthosilicate and diopside - Ba disilicate glass-ceramics for sealing applications in SOFC: Sintering and chemical interactions studiescitations
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article
Sintering behavior of lanthanide-containing glass-ceramic sealants for solid oxide fuel cells
Abstract
This article reports on the influence of different lanthanides (La, Nd, Gd and Yb) on sintering behavior of alkaline-earth aluminosilicate glass-ceramic sealants for their application in solid oxide fuel cells (SOFCs). All the glasses have been prepared by the melt-quench technique. The in situ follow up of sintering behavior of glass powders has been done by a high temperature-environmental scanning electron microscope (HT-ESEM) and a hot-stage microscope (HSM) while the crystalline phase evolution and assemblage have been analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). All the glass compositions exhibit a glass-in-glass phase separation followed by two stage sintering resulting in well sintered glass powder compacts after heat treatment at 850 °C for 1 h. Diopside (CaMgSi 2O 6) based phases constituted the major crystalline part in glass-ceramics followed by some minor phases. The increase in lanthanide content in glasses suppressed their tendency towards devitrification, thus resulting in glass-ceramics with a high amount of residual glassy phase (50-96 wt%) which is expected to facilitate their self-healing behavior during SOFC operation. The electrical conductivity of the investigated glass-ceramics varied between (1.19 and 7.33) × 10 -7 S cm -1 (750-800 °C) while the coefficient of thermal expansion (CTE) varied between (9.4 and 11.2) × 10 -6 K -1 (200-700 °C). Further experimentation with respect to the long term thermal and chemical stability of residual glassy phase under SOFC operation conditions along with high temperature viscosity measurements will be required in order to elucidate the potential of these glass-ceramics as self-healing sealants. © 2012 The Royal Society of Chemistry.