Abstract
Carbon films 5 to 7 nm thick with a graphite structure are obtained via high-speed laser exposure of ultrafine graphite powder distributed homogeneously on the surface of nonalloyed steel. Due to the created intermediate layer consisting of nonstoichiometric iron carbides, the obtained films have a high adhesion to the substrate. These films also exhibit high continuity and behave as ideally polarizable electrodes over an extended potential range in borate buffer solutions. Cathode and anode currents are much lower in the obtained graphite films than are those measured at the compact graphite materials. The deposited graphite layers completely stop the anodic dissolution of a steel substrate.
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