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      Effect of Al 2O 3 addition on the non-isothermal crystallization kinetics and long-term stability of BCABS sealing glass for IT-SOFCs

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          Abstract

          Owing to adjustable thermal expansion performance, BaO–CaO–Al 2O 3–B 2O 3–SiO 2 (BCABS) glass has a promising commercialization prospect for intermediate temperature-solid oxide fuel cells (IT-SOFCs) sealing. Herein, Al 2O 3 with two different contents was added into the same glass formulation, referred to as A and B glass, respectively. In terms of the non-isothermal crystallization kinetic behavior, the effect of Al 2O 3 as the unique intermediate was innovatively studied on the long-term performance of BCABS sealing glass. After the heat treatment at 1023 K for 100 h, the change of the network structure and the expansion coefficient of the glass were characterized. The results showed that the addition of Al 2O 3 as a network forming body could enhance the structure of glass, and increase the activation energy for glass transition, which could effectively inhibit the crystallization ability of sealing glass. Therefore, the B glass with the higher Al 2O 3 content showed the better long-term sealing ability, which was greatly beneficial for IT-SOFCs sealing.

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          Author and article information

          Journal
          Journal of Advanced Ceramics
          Journal of Advanced Ceramics
          Tsinghua University Press (Tsinghua University, Beijing 100084, China )
          2226-4108
          05 December 2018
          : 07
          : 04
          : 380-387 (pp. )
          Affiliations
          aKey Laboratory of Fuel Cell Materials and Devices, Jingdezhen Ceramic Institute, Jingdezhen 333403, China
          bSchool of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China
          Author notes
          * Corresponding authors. E-mail: L. Luo, luolinghong@ 123456tsinghua.org.cn
          Article
          2226-4108-07-04-380
          10.1007/s40145-018-0294-0

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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