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Optimization of the synthesis route of a barium boron aluminosilicate sealing glass for SOFC applications

Puig, Jean and Prange, Andreas and Arati, Baptiste and Laime, Charles and Lenormand, Pascal and Ansart, Florence Optimization of the synthesis route of a barium boron aluminosilicate sealing glass for SOFC applications. (2017) Ceramics International, 43 (13). 9753-9758. ISSN 0272-8842

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Official URL: http://dx.doi.org/10.1016/j.ceramint.2017.04.151

Abstract

A barium boron aluminosilicate sealing glass for IT-SOFC or SOFC applications was synthesized using different routes. Notably, sol-gel and solid state processes were used in order to obtain homogeneous glasses at 1100–1300 °C. Sol-gel processes consist in a soft chemistry route allowing a better homogeneity between cationic precursors in the mixture and a better reactivity of the material. The influence of the process and of the glass processing temperature on the thermo-mechanical properties of the glasses were investigated after different heat treatments in air atmosphere, i.e. glass processing, sealing (850 °C-2 h) and ageing (800 °C-100 h) procedures. It had been observed that the grain size of the glass powder (obtained after the glass processing and used for the sealing operation) is determining in order to manage the sealing procedure. Some large pores were formed during the devitrification step of the glass made by solid state route while glass sealants synthesized by the sol-gel route even at 1100 °C remained suitable for SOFC applications after thermal treatments, which proved that the sol-gel process is useful to decrease the glass processing temperature.

Item Type:Article
Additional Information:Thanks to Elsevier editor.The original PDF of the article can be found at : https://www.sciencedirect.com/science/article/pii/S0272884217307691
HAL Id:hal-01757033
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Rheinisch Westfaelische Technische Hochschule Aachen University - RWTH (GERMANY)
Laboratory name:
Funders:
Agence De l′Envivronnement et de la Maîtrise de l′EnergieEuropean Institute For Energy Research
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Deposited By: cirimat webmestre
Deposited On:03 Apr 2018 10:18

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