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Rigid-resilient transition in calcium borosilicate sealing glass–ceramics: Effect of preferred orientation
Journal of the European Ceramic Society ( IF 5.8 ) Pub Date : 2018-01-08 , DOI: 10.1016/j.jeurceramsoc.2018.01.005
Jiajia Yan , Ruiguo Chen , Baisheng Sa , Dewei Lin , Lihua Hong , Rui Xiong , Yukun Wu , Hande Chen , Hongbin Su , Qingming Huang , Hsiwen Yang , Kongfa Chen , Teng Zhang

At present, the insufficient thermo-mechanical stability of sealing glass presents a challenge for solid oxide fuel cells (SOFCs). In this work, we report for the first time that a rigid-resilient transition occurs in a calcium borosilicate sealing glass upon heating at 700 °C for different durations. The elastic modulus increases from 28.1–40.0 GPa for 24 h to 92.3–105.1 GPa for 100 h, while the corresponding hardness increases from 2.5–3.1 GPa to 8.1–9.2 GPa. In addition, a possible mechanism for the rigid-resilient transition has been proposed. The reported results provide a new approach to solve the sealing problem of SOFCs.



中文翻译:

硼硅酸钙密封玻璃陶瓷的刚性-弹性转变:首选取向的影响

当前,密封玻璃的不足的热机械稳定性对固体氧化物燃料电池(SOFC)提出了挑战。在这项工作中,我们首次报告在700°C的温度下加热不同时间后,硼硅酸钙密封玻璃会发生刚性-弹性转变。弹性模量从24小时的28.1–40.0 GPa增加到100小时的92.3–105.1 GPa,而相应的硬度从2.5–3.1 GPa增加到8.1–9.2 GPa。另外,已经提出了一种用于刚性-弹性过渡的可能的机制。报道的结果为解决SOFC的密封问题提供了一种新方法。

更新日期:2018-01-08
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