Structure, sintering, and crystallization kinetics of alkaline-earth aluminosilicate glass-ceramic sealants for solid oxide fuel cells

Ashutosh Goel, Dilshat U. Tulyaganov, Anna Maria Ferrari, Essam R. Shaaban, Andreas Prange, Federica Bondioli, José M.F. Ferreira

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The most common approach to seal an electrolyte or a ceramic anode with a metallic interconnect in solid oxide fuel cells of planar configuration (pSOFC), in order to achieve a hermetic and stable cell, is to use rigid glass or glass-ceramic (GC) seals. The properties of these sealants can be tailored specifically for use in SOFCs through variation of the glass composition. In the present manuscript, we aim to study the structure, sintering behavior, and crystallization kinetics of a new series of aluminosilicate GC sealants derived from substitution via scheme 0.1(Ca2++Si4+)↔0. 1(La3++Al3+) in a pure CaMgSi2O6 (diopside) system. The substitution of BaO for CaO and the addition of fixed amounts of B2O3, Cr2O3, and NiO were attempted in order to achieve desirable traits that qualify the investigated GCs for sealing application in pSOFCs. The investigated glasses showed a steady increase in density, coefficient of thermal expansion, and molar volume with addition of Cr2O3 and increasing BaO contents while no significant variation in glass transition temperature (Tg) was observed. Sintering and crystallization behavior of the glasses were investigated using hot-stage microscopy and differential thermal analysis, respectively. The microstructure and the properties of GCs were investigated under nonisothermal heat treatment conditions (800° and 850°C; 1 h). Finally, Rietveld-R.I.R. technique was used to quantify the amount of crystalline and amorphous content in the GCs. It was observed that while addition of Cr2O3 improved the sinterability of glass-powder compacts and decreased the amorphous content in the resultant GCs, substitution of BaO for CaO led to an increase in amorphous content in the GCs.

Original languageEnglish (US)
Pages (from-to)830-837
Number of pages8
JournalJournal of the American Ceramic Society
Volume93
Issue number3
DOIs
StatePublished - Mar 1 2010
Externally publishedYes

Fingerprint

Crystallization kinetics
Sealants
Aluminosilicates
Glass ceramics
Solid oxide fuel cells (SOFC)
Sintering
Earth (planet)
Glass
Substitution reactions
Density (specific gravity)
Seals
Crystallization
Powders
Differential thermal analysis
Electrolytes
Thermal expansion
Microscopic examination
Anodes
Heat treatment
aluminosilicate

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Goel, Ashutosh ; Tulyaganov, Dilshat U. ; Ferrari, Anna Maria ; Shaaban, Essam R. ; Prange, Andreas ; Bondioli, Federica ; Ferreira, José M.F. / Structure, sintering, and crystallization kinetics of alkaline-earth aluminosilicate glass-ceramic sealants for solid oxide fuel cells. In: Journal of the American Ceramic Society. 2010 ; Vol. 93, No. 3. pp. 830-837.
@article{f2d615cb1a4c4329924f289b484badc9,
title = "Structure, sintering, and crystallization kinetics of alkaline-earth aluminosilicate glass-ceramic sealants for solid oxide fuel cells",
abstract = "The most common approach to seal an electrolyte or a ceramic anode with a metallic interconnect in solid oxide fuel cells of planar configuration (pSOFC), in order to achieve a hermetic and stable cell, is to use rigid glass or glass-ceramic (GC) seals. The properties of these sealants can be tailored specifically for use in SOFCs through variation of the glass composition. In the present manuscript, we aim to study the structure, sintering behavior, and crystallization kinetics of a new series of aluminosilicate GC sealants derived from substitution via scheme 0.1(Ca2++Si4+)↔0. 1(La3++Al3+) in a pure CaMgSi2O6 (diopside) system. The substitution of BaO for CaO and the addition of fixed amounts of B2O3, Cr2O3, and NiO were attempted in order to achieve desirable traits that qualify the investigated GCs for sealing application in pSOFCs. The investigated glasses showed a steady increase in density, coefficient of thermal expansion, and molar volume with addition of Cr2O3 and increasing BaO contents while no significant variation in glass transition temperature (Tg) was observed. Sintering and crystallization behavior of the glasses were investigated using hot-stage microscopy and differential thermal analysis, respectively. The microstructure and the properties of GCs were investigated under nonisothermal heat treatment conditions (800° and 850°C; 1 h). Finally, Rietveld-R.I.R. technique was used to quantify the amount of crystalline and amorphous content in the GCs. It was observed that while addition of Cr2O3 improved the sinterability of glass-powder compacts and decreased the amorphous content in the resultant GCs, substitution of BaO for CaO led to an increase in amorphous content in the GCs.",
author = "Ashutosh Goel and Tulyaganov, {Dilshat U.} and Ferrari, {Anna Maria} and Shaaban, {Essam R.} and Andreas Prange and Federica Bondioli and Ferreira, {Jos{\'e} M.F.}",
year = "2010",
month = "3",
day = "1",
doi = "https://doi.org/10.1111/j.1551-2916.2009.03503.x",
language = "English (US)",
volume = "93",
pages = "830--837",
journal = "Journal of the American Ceramic Society",
issn = "0002-7820",
publisher = "Wiley-Blackwell",
number = "3",

}

Structure, sintering, and crystallization kinetics of alkaline-earth aluminosilicate glass-ceramic sealants for solid oxide fuel cells. / Goel, Ashutosh; Tulyaganov, Dilshat U.; Ferrari, Anna Maria; Shaaban, Essam R.; Prange, Andreas; Bondioli, Federica; Ferreira, José M.F.

In: Journal of the American Ceramic Society, Vol. 93, No. 3, 01.03.2010, p. 830-837.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Structure, sintering, and crystallization kinetics of alkaline-earth aluminosilicate glass-ceramic sealants for solid oxide fuel cells

AU - Goel, Ashutosh

AU - Tulyaganov, Dilshat U.

AU - Ferrari, Anna Maria

AU - Shaaban, Essam R.

AU - Prange, Andreas

AU - Bondioli, Federica

AU - Ferreira, José M.F.

PY - 2010/3/1

Y1 - 2010/3/1

N2 - The most common approach to seal an electrolyte or a ceramic anode with a metallic interconnect in solid oxide fuel cells of planar configuration (pSOFC), in order to achieve a hermetic and stable cell, is to use rigid glass or glass-ceramic (GC) seals. The properties of these sealants can be tailored specifically for use in SOFCs through variation of the glass composition. In the present manuscript, we aim to study the structure, sintering behavior, and crystallization kinetics of a new series of aluminosilicate GC sealants derived from substitution via scheme 0.1(Ca2++Si4+)↔0. 1(La3++Al3+) in a pure CaMgSi2O6 (diopside) system. The substitution of BaO for CaO and the addition of fixed amounts of B2O3, Cr2O3, and NiO were attempted in order to achieve desirable traits that qualify the investigated GCs for sealing application in pSOFCs. The investigated glasses showed a steady increase in density, coefficient of thermal expansion, and molar volume with addition of Cr2O3 and increasing BaO contents while no significant variation in glass transition temperature (Tg) was observed. Sintering and crystallization behavior of the glasses were investigated using hot-stage microscopy and differential thermal analysis, respectively. The microstructure and the properties of GCs were investigated under nonisothermal heat treatment conditions (800° and 850°C; 1 h). Finally, Rietveld-R.I.R. technique was used to quantify the amount of crystalline and amorphous content in the GCs. It was observed that while addition of Cr2O3 improved the sinterability of glass-powder compacts and decreased the amorphous content in the resultant GCs, substitution of BaO for CaO led to an increase in amorphous content in the GCs.

AB - The most common approach to seal an electrolyte or a ceramic anode with a metallic interconnect in solid oxide fuel cells of planar configuration (pSOFC), in order to achieve a hermetic and stable cell, is to use rigid glass or glass-ceramic (GC) seals. The properties of these sealants can be tailored specifically for use in SOFCs through variation of the glass composition. In the present manuscript, we aim to study the structure, sintering behavior, and crystallization kinetics of a new series of aluminosilicate GC sealants derived from substitution via scheme 0.1(Ca2++Si4+)↔0. 1(La3++Al3+) in a pure CaMgSi2O6 (diopside) system. The substitution of BaO for CaO and the addition of fixed amounts of B2O3, Cr2O3, and NiO were attempted in order to achieve desirable traits that qualify the investigated GCs for sealing application in pSOFCs. The investigated glasses showed a steady increase in density, coefficient of thermal expansion, and molar volume with addition of Cr2O3 and increasing BaO contents while no significant variation in glass transition temperature (Tg) was observed. Sintering and crystallization behavior of the glasses were investigated using hot-stage microscopy and differential thermal analysis, respectively. The microstructure and the properties of GCs were investigated under nonisothermal heat treatment conditions (800° and 850°C; 1 h). Finally, Rietveld-R.I.R. technique was used to quantify the amount of crystalline and amorphous content in the GCs. It was observed that while addition of Cr2O3 improved the sinterability of glass-powder compacts and decreased the amorphous content in the resultant GCs, substitution of BaO for CaO led to an increase in amorphous content in the GCs.

UR - http://www.scopus.com/inward/record.url?scp=77649211284&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77649211284&partnerID=8YFLogxK

U2 - https://doi.org/10.1111/j.1551-2916.2009.03503.x

DO - https://doi.org/10.1111/j.1551-2916.2009.03503.x

M3 - Article

VL - 93

SP - 830

EP - 837

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

SN - 0002-7820

IS - 3

ER -