Cobalt plating of high temperature stainless steel interconnects

To limit oxidation and protect against loss of conductivity in stainless steel for applications such as high temperature fuel cell interconnects, a layer of cobalt was electroplated on the surface. When heated in air at 800°C, the cobalt was converted into spinel phases containing cobalt, chromium and iron. The oxide layer was characterized by X-ray diffraction and energy dispersive spectrometry. The area specific resistance (ASR) of the …