A low-temperature sealing approach, transient liquid phase bonding with Ni–Sn system, was employed to seal metal-supported solid oxide fuel cell (MS-SOFC) components in this study. The Ni layer was prefabricated on the ferritic stainless steels by electroplating firstly, and then were vacuum annealed to enhance the bonding between the Ni coating and the steel substrate. Afterward, the Ni coated steels were transient liquid phase bonded using a thin interlayer of pure Sn. Effects of bonding temperature (250–400 °C) and holding time (10–60 min) on the interface of joints were investigated. The interfacial microstructure of joints was observed by the scanning electron microscope and the transmission electron microscope. A joint with full intermetallic compounds (IMCs) of Ni₃Sn₄ and Ni₃Sn₂ were formed at 400 °C/60 min. These Ni–Sn IMCs were all stable up to 794.5 °C, ensuring that the joint with full IMCs microstructure can be performed at the operating temperature of ∼600 °C for MS-SOFC. Furthermore, the residual Ni coating can also be served as a protective layer for the stack.

在这项研究中，采用了一种低温密封方法，即采用Ni-Sn系统进行瞬时液相键合来密封金属支撑的固体氧化物燃料电池（MS-SOFC）组件。首先通过电镀将镍层预制在铁素体不锈钢上，然后进行真空退火以增强镍涂层与钢基底之间的结合力。然后，使用薄的纯锡夹层将镀镍钢进行瞬态液相键合。研究了粘结温度（250–400°C）和保持时间（10–60分钟）对接头界面的影响。通过扫描电子显微镜和透射电子显微镜观察关节的界面微观结构。具有Ni ₃ Sn ₄和Ni的全金属间化合物（IMC）的接头在400°C / 60分钟时形成₃ Sn ₂。这些Ni-Sn IMC在高达794.5°C的温度下都非常稳定，从而确保了具有完整IMC微结构的接头可以在MS-SOFC的约600°C的工作温度下进行。此外，残留的Ni涂层也可以用作叠层的保护层。