Abstract Plasma nitriding was applied to ferritic stainless steel substrates to improve their performances as interconnects for solid oxide fuel cell devices. The samples underwent electrical conductivity test and SEM/EDS, TEM/EDS, environmental-SEM analyses. The first stages of corrosion were recorded in-situ with the e-SEM. Nitriding is effective in limiting the undesired chromium evaporation from the steel substrates and accelerates the corrosion kinetics, but its influence of the electrical conductivity is ambiguous. No intergranular corrosion is found in the steel substrate after long time operation. Nitriding helps commercially competitive porous coating to improve chromium retention properties of metal interconnects.

中文翻译：

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用于固体氧化物燃料电池装置的氮化铁素体不锈钢的腐蚀行为

摘要 等离子渗氮应用于铁素体不锈钢基材以提高其作为固体氧化物燃料电池装置互连件的性能。样品经过电导率测试和 SEM/EDS、TEM/EDS、环境-SEM 分析。使用 e-SEM 原位记录腐蚀的第一阶段。氮化能有效地限制不希望的铬从钢基体蒸发并加速腐蚀动力学，但其对导电性的影响是不明确的。长期运行后，钢基体未发现晶间腐蚀。氮化有助于具有商业竞争力的多孔涂层，以提高金属互连件的铬保留性能。