Abstract High temperature oxidation behavior and associated Cr evaporation process of Co electrodeposited 22 wt.% Cr containing ferritic stainless steel designed for the SOFC interconnects was investigated using XRD and post-processed TEM compositional analysis. The electrodeposited Co layer with a thickness of 400 nm lead to a tenfold reduction in the Cr evaporation. This results from not only the prevention of direct exposure of Cr 2 O 3 to the air by Co spinel oxide formation but also the suspension of Cr transport through oxide grain boundaries due to the phase transformation of Co oxide from Co 3 O 4 to Mn x Co 3-x O 4 .

中文翻译：

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通过 Co 电镀抑制 Cr 蒸发和含 22 wt.% Cr 铁素体不锈钢的潜在 Cr 保留机制

摘要 使用 XRD 和后处理 TEM 成分分析研究了为 SOFC 互连设计的 Co 电沉积 22 wt.% Cr 铁素体不锈钢的高温氧化行为和相关的 Cr 蒸发过程。厚度为 400 nm 的电沉积 Co 层导致 Cr 蒸发量减少十倍。这不仅是由于 Co 尖晶石氧化物的形成防止了 Cr 2 O 3 直接暴露在空气中，而且由于 Co 氧化物从 Co 3 O 4 到 Mn x 的相变，Cr 迁移通过氧化物晶界的悬浮Co 3-x O 4 。