A low silica, barium borate glass-ceramic for use as seals in planar SOFCs
A low silica, barium borate glass-ceramic for use as seals in planar SOFCs containing 64 mol%BaO, 3 mol%Al2O3 and 3 mol%SiO2 was studied. Coefficient of thermal expansion (CTE) between 275-550 °C, glass transition temperature (Tg), and dilatometric softening point (Ts) of the parent glass were 11.9...
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th-cmuir.6653943832-59442014-08-30T03:23:39Z A low silica, barium borate glass-ceramic for use as seals in planar SOFCs Laorodphan N. Namwong P. Thiemsorn W. Jaimasith M. Wannagon A. Chairuangsri T. A low silica, barium borate glass-ceramic for use as seals in planar SOFCs containing 64 mol%BaO, 3 mol%Al2O3 and 3 mol%SiO2 was studied. Coefficient of thermal expansion (CTE) between 275-550 °C, glass transition temperature (Tg), and dilatometric softening point (Ts) of the parent glass were 11.9 × 10-6 °C-1, 552 °C, and 558 °C, respectively. Glass-ceramic was produced by devitrification heat treatment at 800 °C for 100 h. It was found that nucleation heat treatment, seeding by 3 wt%ZrO2 as glass-composite and pulverization affected the amount, size and distribution of crystalline phases. SEM-EDS and XRD results revealed that crystalline phases presented in the devitrified glass-ceramic were barium aluminate (BaAl2O4), barium aluminosilicate (BaAl2Si2O8) possibly with boron associated in its crystal structure, and barium zirconate (BaZrO3). CTE of the devitrified glass-ceramic was in the range of (10.1-13.0) × 10-6 °C-1. Good adhesion was obtained both in the cases of glass and devitrified glass-ceramic with YSZ and AISI430 stainless steel. Interfacial phenomena between these components were discussed. © 2008 Elsevier B.V. All rights reserved. 2014-08-30T03:23:39Z 2014-08-30T03:23:39Z 2009 Article 00223093 10.1016/j.jnoncrysol.2008.07.044 JNCSB http://www.scopus.com/inward/record.url?eid=2-s2.0-57849165530&partnerID=40&md5=175bcd79c644f7cc4b90dc952e0975fe http://cmuir.cmu.ac.th/handle/6653943832/5944 English |
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A low silica, barium borate glass-ceramic for use as seals in planar SOFCs containing 64 mol%BaO, 3 mol%Al2O3 and 3 mol%SiO2 was studied. Coefficient of thermal expansion (CTE) between 275-550 °C, glass transition temperature (Tg), and dilatometric softening point (Ts) of the parent glass were 11.9 × 10-6 °C-1, 552 °C, and 558 °C, respectively. Glass-ceramic was produced by devitrification heat treatment at 800 °C for 100 h. It was found that nucleation heat treatment, seeding by 3 wt%ZrO2 as glass-composite and pulverization affected the amount, size and distribution of crystalline phases. SEM-EDS and XRD results revealed that crystalline phases presented in the devitrified glass-ceramic were barium aluminate (BaAl2O4), barium aluminosilicate (BaAl2Si2O8) possibly with boron associated in its crystal structure, and barium zirconate (BaZrO3). CTE of the devitrified glass-ceramic was in the range of (10.1-13.0) × 10-6 °C-1. Good adhesion was obtained both in the cases of glass and devitrified glass-ceramic with YSZ and AISI430 stainless steel. Interfacial phenomena between these components were discussed. © 2008 Elsevier B.V. All rights reserved. |
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author |
Laorodphan N. Namwong P. Thiemsorn W. Jaimasith M. Wannagon A. Chairuangsri T. |
spellingShingle |
Laorodphan N. Namwong P. Thiemsorn W. Jaimasith M. Wannagon A. Chairuangsri T. A low silica, barium borate glass-ceramic for use as seals in planar SOFCs |
author_facet |
Laorodphan N. Namwong P. Thiemsorn W. Jaimasith M. Wannagon A. Chairuangsri T. |
author_sort |
Laorodphan N. |
title |
A low silica, barium borate glass-ceramic for use as seals in planar SOFCs |
title_short |
A low silica, barium borate glass-ceramic for use as seals in planar SOFCs |
title_full |
A low silica, barium borate glass-ceramic for use as seals in planar SOFCs |
title_fullStr |
A low silica, barium borate glass-ceramic for use as seals in planar SOFCs |
title_full_unstemmed |
A low silica, barium borate glass-ceramic for use as seals in planar SOFCs |
title_sort |
low silica, barium borate glass-ceramic for use as seals in planar sofcs |
publishDate |
2014 |
url |
http://www.scopus.com/inward/record.url?eid=2-s2.0-57849165530&partnerID=40&md5=175bcd79c644f7cc4b90dc952e0975fe http://cmuir.cmu.ac.th/handle/6653943832/5944 |
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