Oxide scale formation on different metallic interconnects for solid oxide fuel cells

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• 作者：Veronica Miguel-Pé ; rez^a ; Ana Martí ; nez-Amesti^a ; ^{ana.martinez@ehu.es} ; Marí ; a Luisa Nó ; ^b ; Aitor Larra&ntilde ; aga^a ; Marí ; a Isabel Arriortua^a ; ^{maribel.arriortua@ehu.es}
• 关键词：A. Alloy ; C. High temperature corrosion ; C. Oxidation ; B. X-ray diffraction ; B. SEM
• 刊名：Corrosion Science
• 出版年：2012
• 期刊代码：28_0010938x
• 类别：ch
• 出版时间：July, 2012
• 卷：60
• 期：Complete
• 页码：38-49
• 文件大小：2542 K

摘要

The formation of an oxide layer on different metallic samples (i.e., Crofer 22 APU, SS430 and Conicro 4023 W188) treated at 800 掳C for 100 and 1000 h in air was investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM/EDX) and thermogravimetric analysis.

The results indicate that the oxide scale formed on the metallic interconnect consists of a spinel (Fe, Cr, Mn)₃O₄ or (Fe, Cr, Ni)₃Co₂O₄ outer layer and a chromia (Cr₂O₃) inner layer. The Crofer 22 APU and Conicro 4023 W188 samples were determined to be more promising as metallic interconnects than SS430 due to their higher oxidation resistance.