Conversion of copper and manganese metallic films to spinel coating

Oxidation of copper + manganese metallic thin films on UNS 430 stainless steel was studied at temperatures of 600–950 °C. The Cu–Mn metallic films were converted to Cu–Mn spinel coating in the temperature range of 600–950 °C as confirmed by X-ray diffraction. Conversion mechanisms of metals to the spinel were investigated. Examination by SEM showed that negligible oxidation of the substrate alloy occurred in the coated samples at temperatures …