Oxidation Behavior and Conductivity of UNS 430 Stainless Steel and Crofer 22 APU with Spinel Coatings

Coatings of Cu-Mn, Co-Mn, and Cu-Fe spinels were obtained on UNS 430 and Crofer 22 APU ferritic stainless steel by oxidation of electroplated metal coatings. The thickness of the spinel coatings was 20-30 um. The average weight gain of Crofer 22 APU with Cu-Mn, Co-Mn, and Cu-Fe spinel coatings after 1400 hours oxidation at 750{degree sign}C was 0.00052 g/cm2, 0.00022 g/cm2, and 0.00027 g/cm2, whereas the average weight gain of UNS 430 stainless …