The stability of tubular metal supported SOFC has been studied as a function of current load, thermal cycles and interconnect-sealing concepts. Long term testing under applied current at 800°C has been performed over 1000 hours on standard cells. Thermal cycles have been proven intensely (250 cycles) during over 700 hours. Major cause for degradation has been identified in terms of the anode interconnect-sealing design, which involves specific handling and machining of tubes and generation of initial submicron cracks. Cell microstructure seems stable after 1000 hours testing at 300 mA/cm~2 and 800°C.
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机译：已经研究了管状金属支撑的SOFC的稳定性与电流负载，热循环和互连密封概念的关系。已在标准电池上经过1000小时的长时间测试，并在800°C的施加电流下进行了长期测试。在700多个小时内，热循环已被证明（250个循环）。阳极互连密封设计已确定了退化的主要原因，该设计涉及对管子的特殊处理和机械加工以及初始亚微米裂纹的产生。在300 mA / cm〜2和800°C下测试1000小时后，细胞微观结构似乎稳定。
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