Spinel coatings qf Cu-Mn-O and Co-Mn-O were obtained on UNS S43000 stainless steel by oxidation of electroplated metal coatings. It was demonstrated that the coatings can effectively provide a conductive path to the metallic substrate. The area-specific resistance of both Cu-Mn and Co-Mn spinels was 0.003 Q-cm~2 after oxidation at 750 deg C for 1,500 h, compared to 0.189 Q-cm~2 for the uncoated UNS S43000 sample.
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