| Studies on Thermo-Physical and Bonding Properties of SiO2-SrO-B2O3-ZnO-P2O5 Glasses |
Anupam Dixit, M. Goswami, Jitendra Nuwad and G. P. Kothiyal
pages 232-234
DOI:10.1080/0371750X.2013.775760 |
| Abstract |
Glasses having compositions (mol%) (42–x)SiO2-39SrO-10B2O3-9ZnO-xP2O5 (SSBZP) where, x = 0, 1, 2, 3, 4 were prepared by melt-quench technique. Prepared glasses were characterized for density, thermo-mechanical properties and bonding behaviour with Crofer 22 APU alloy. Thermal expansion coefficient (TEC) values were found to be in the range of 9.7-11.1 10–6/oC (30o-600oC) which matches with TEC of Crofer 22 APU. Sandwich type geometry seals were prepared using glasses with 2 mol% P2O5. These seals showed good bonding/adhesion of the glass with Crofer 22 APU. Elemental line scans recorded using energy dispersive X-ray (EDS) indicated that interdiffusion of Fe, Cr and Si across interface is responsible for good bonding with Crofer 22 APU. However, in the present glasses, the effect of P2O5 incorporation on thermo-physical properties is insignificant.
[Keywords: SOFC, Sealant, Glass, Interface studies]
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