Abstract
Drastic improvements of corrosion properties of a highly corrosive carbon steel material has been observed after N + ion bombardment and simultaneous vacuum vaporization of silicon oil. The combined effect of ion irradiation and controlled deposition results in a compact carbon-silicon layer, which due to the dynamic ion beam mixing process, is firmly attached to the substrate surface. Aqueous corrosion studies were done in both acetic acid and NaCl solutions. Improved corrosion properties were found by measuring the incubation time, i.e. the time of exposure in the liquid necessary to induce the first signs of corrosion attack. The improved corrosion characteristics are explained by the creation of the nonporous and highly adhesive carbon-silicon film acting as a protecting layer against chemical attack.
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