Network structure and thermal stability study of high temperature seal glass

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dc.contributorMaterials Science and Engineeringen
dc.contributor.authorLu, Kathyen
dc.contributor.authorMahapatra, Manoj K.en
dc.contributor.departmentMaterials Science and Engineeringen
dc.date.accessed2015-04-24en
dc.date.accessioned2015-05-21T19:47:24Zen
dc.date.available2015-05-21T19:47:24Zen
dc.date.issued2008-10-01en
dc.description.abstractHigh temperature seal glass has stringent requirement on glass thermal stability, which is dictated by glass network structures. In this study, a SrO-La2O3-Al2O3-B2O3-SiO2 based glass system was studied using nuclear magnetic resonance, Raman spectroscopy, and x-ray diffraction for solid oxide cell application purpose. Glass structural unit neighboring environment and local ordering were evaluated. Glass network connectivity as well as silicon and boron glass former coordination were calculated for different B2O3:SiO2 ratios. Thermal stability of the borosilicate glasses was studied after thermal treatment at 850 degrees C. The study shows that high B2O3 content induces BO4 and SiO4 structural unit ordering, increases glass localized inhomogeneity, decreases glass network connectivity, and causes devitrification. Glass modifiers interact with either silicon- or boron-containing structural units and form different devitrified phases at different B2O3:SiO2 ratios. B2O3-free glass shows the best thermal stability among the studied compositions, remaining stable after thermal treatment for 200 h at 850 degrees C. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2979323]en
dc.description.sponsorshipUnited States. Department of Energy - Grant No. DE-FC07-06ID14739en
dc.format.extent10 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationLu, K., Mahapatra, M. K. (2008). Network structure and thermal stability study of high temperature seal glass. Journal of Applied Physics, 104(7). doi: 10.1063/1.2979323en
dc.identifier.doihttps://doi.org/10.1063/1.2979323en
dc.identifier.issn0021-8979en
dc.identifier.urihttp://hdl.handle.net/10919/52430en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/jap/104/7/10.1063/1.2979323en
dc.language.isoen_USen
dc.publisherAmerican Institute of Physicsen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectOzoneen
dc.subjectNetworksen
dc.subjectBorosilicate glassesen
dc.subjectNuclear magnetic resonanceen
dc.subjectGlass transitionsen
dc.titleNetwork structure and thermal stability study of high temperature seal glassen
dc.title.serialJournal of Applied Physicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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