| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1469530 | Corrosion Science | 2012 | 12 Pages |
The formation of an oxide layer on different metallic samples (i.e., Crofer 22 APU, SS430 and Conicro 4023 W188) treated at 800 °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.
► The oxidation of Crofer 22 APU, SS430 and Conicro 4023 W188 was studied. ► Oxide scales were studied by XRD and SEM after oxidation at 800 °C in air for 1000 h. ► A spinel outer layer and chromia inner layer were formed for all alloys.
