Abstract
In this paper, we reported a novel oxidation phenomenon on carbon steel which served as cathode during plasma electrolysis process in organic solution. The optical emission spectroscopy was collected and the electron temperature in plasma discharge region was calculated. The morphology and composition of oxide layer, as well as the decomposition mechanism of electrolyte were analyzed. The results showed that the plasma discharge region contained many active oxygen species with a high electron temperature of about 11,000 K, which promoted the oxidation reaction on steel cathode. Moreover, the oxide layer displayed an enhanced mechanical property and can improve the wear resistance of carbon steel significantly. This work provides a feasible and efficient approach for the performance improvement of steel materials.
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