Abstract
In this study, novel glasses based on SrO–La2O3–Al2O3–B2O3–SiO2 system are investigated for solid oxide fuel and electrolyzer cells. The network structure evolution of the glasses with increasing B2O3:SiO2 ratio was studied using Raman spectroscopy. The thermal properties of the glasses, including glass transition temperature T g and glass softening temperature T d , were studied using dilatometry. The thermal stability of the glasses was investigated using X-ray diffraction. The study shows that as the B2O3:SiO2 ratio increases, the SrO–La2O3–Al2O3–B2O3–SiO2 glass micro-heterogeneity and the amount of non-bridging oxygen atoms increase. Correspondingly, the T g of the SrO–La2O3–Al2O3–B2O3–SiO2 glasses changes from 635 to 775°C, and the T d changes from 670 to 815°C. Glass thermal stability decreases with B2O3:SiO2 ratio increase. The glass without B2O3 is thermally stable after being kept at 850°C for 200 hrs.
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Mahapatra, M.K., Lu, K. & Bodnar, R.J. Network structure and thermal property of a novel high temperature seal glass. Appl. Phys. A 95, 493–500 (2009). https://doi.org/10.1007/s00339-008-4926-z
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DOI: https://doi.org/10.1007/s00339-008-4926-z