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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/14138

Title: Physical and thermal behaviour of Sr-La-Al-B-Si based SOFC glass sealants as function of SrO content and B(2)O(3)/SiO(2) ratio in the matrix
Authors: OJHA, PK
RATH, SK
CHONGDAR, TK
GOKHALE, NM
KULKARNI, AR
Keywords: OXIDE FUEL-CELLS
NETWORK STRUCTURE
SEALING GLASSES
INTERCONNECT
Issue Date: 2011
Publisher: ELSEVIER SCIENCE BV
Citation: JOURNAL OF POWER SOURCES,196(10)4594-4598
Abstract: A series of SOFC glass sealants with composition SrO (x), La(2)O(3) (15), Al(2)O(3) (15), B(2)O(3) (40 - x), and SiO(2) (30) [x = 10, 15, 20, 25 and 30] (wt.%) [SLABS] are investigated for their structure property correlations at different compositions. Quantitative Fourier transform infrared spectroscopy shows structural rigidity with increasing SrO content, as demonstrate by an increase in the Si-O-Si/O-Si-O bending and B-O-B stretching frequencies. The role of SrO as a modifier dominates the control of the structure and behaviour of glasses compared with the effect of network formers, i.e., the B(2)O(3)/SiO(2) ratio. Consequent to the structural changes, increasing substitution of B(2)O(3) by SrO the glasses causes increases in the density, glass transition temperature and dilatometric softening point. On the other hand, the crystallization temperatures show a decreasing trend and the coefficient of thermal expansion increases with increase in substitution. (C) 2011 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jpowsour.2011.01.021
http://dspace.library.iitb.ac.in/jspui/handle/100/14138
ISSN: 0378-7753
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