Structural Inversion and Behavioural Changes as a Function of Composition in Sr-La-Al-B-Si Based Glasses
A series of glass sealants for solid oxide fuel cell (SOFC) with compositions SrO (x wt %) La2O3 (15 wt %) Al2O3 (15 wt %) B2O3 (40-x wt %) SiO2 (30 wt %) [x = 10, 15, 20, 25 & 30] [SLABS] have been investigated by quantitative Fourier Transform Infrared Spectroscopy (FTIR). Structural findings...
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| Veröffentlicht in: | New journal of glass and ceramics 2011-07, Vol.1 (2), p.21-27 |
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| container_title | New journal of glass and ceramics |
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| creator | Ojha, Prasanta Kumar Rath, Sangram K. Chongdar, Tapas K. Gokhale, Nitin M. Kulkarni, Ajit R. |
| description | A series of glass sealants for solid oxide fuel cell (SOFC) with compositions SrO (x wt %) La2O3 (15 wt %) Al2O3 (15 wt %) B2O3 (40-x wt %) SiO2 (30 wt %) [x = 10, 15, 20, 25 & 30] [SLABS] have been investigated by quantitative Fourier Transform Infrared Spectroscopy (FTIR). Structural findings from FTIR reveal that with increasing substitu-tion of B2O3 by SrO, even though the B2O3/SiO2 ratio decreases, however the Si-O- non-bridging bond content in the matrix is increasing and glass structure is getting more inverted. UV-Vis Diffused Reflectance Spectroscopy (UV-Vis-DRS) of the glass series shows that electrical band gap of glasses decreases in the series from 3.07eV to 2.97eV with increasing substitution from x = 10 to x = 30. Conductivities of the glass samples were measured by AC impedance spectroscopy and found to be increasing from 2.74 10-5 Scm-1 to 1.09 10-4 Scm-1 with increasing substitution from x =10 to x = 30. |
| doi_str_mv | 10.4236/njgc.2011.12004 |
| format | Article |
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Structural findings from FTIR reveal that with increasing substitu-tion of B2O3 by SrO, even though the B2O3/SiO2 ratio decreases, however the Si-O- non-bridging bond content in the matrix is increasing and glass structure is getting more inverted. UV-Vis Diffused Reflectance Spectroscopy (UV-Vis-DRS) of the glass series shows that electrical band gap of glasses decreases in the series from 3.07eV to 2.97eV with increasing substitution from x = 10 to x = 30. Conductivities of the glass samples were measured by AC impedance spectroscopy and found to be increasing from 2.74 10-5 Scm-1 to 1.09 10-4 Scm-1 with increasing substitution from x =10 to x = 30.</description><identifier>ISSN: 2161-7554</identifier><identifier>EISSN: 2161-7562</identifier><identifier>DOI: 10.4236/njgc.2011.12004</identifier><language>eng</language><subject>Fourier transforms ; Glass ; Infrared spectroscopy ; Inversions ; Sealers ; Short range order ; Silicon dioxide ; Solid oxide fuel cells</subject><ispartof>New journal of glass and ceramics, 2011-07, Vol.1 (2), p.21-27</ispartof><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c1604-79985aef3555c79ce83ba22eb10ec93e0f3d560d5e0edba3e676818179c5aa403</citedby><cites>FETCH-LOGICAL-c1604-79985aef3555c79ce83ba22eb10ec93e0f3d560d5e0edba3e676818179c5aa403</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Ojha, Prasanta Kumar</creatorcontrib><creatorcontrib>Rath, Sangram K.</creatorcontrib><creatorcontrib>Chongdar, Tapas K.</creatorcontrib><creatorcontrib>Gokhale, Nitin M.</creatorcontrib><creatorcontrib>Kulkarni, Ajit R.</creatorcontrib><title>Structural Inversion and Behavioural Changes as a Function of Composition in Sr-La-Al-B-Si Based Glasses</title><title>New journal of glass and ceramics</title><description>A series of glass sealants for solid oxide fuel cell (SOFC) with compositions SrO (x wt %) La2O3 (15 wt %) Al2O3 (15 wt %) B2O3 (40-x wt %) SiO2 (30 wt %) [x = 10, 15, 20, 25 & 30] [SLABS] have been investigated by quantitative Fourier Transform Infrared Spectroscopy (FTIR). 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| subjects | Fourier transforms Glass Infrared spectroscopy Inversions Sealers Short range order Silicon dioxide Solid oxide fuel cells |
| title | Structural Inversion and Behavioural Changes as a Function of Composition in Sr-La-Al-B-Si Based Glasses |
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