Abstract
The corrosion resistance of finely dispersed metals in neutral media was studied by a method involving measurements of the volume of oxygen absorbed by a corroding sample. Iron powders were prepared by milling in heptane alone and heptane with oleic acid and tested for corrosion resistance in 0.85% NaCl at 37°C. An induction period characterized by a relatively low corrosion rate was revealed. The induction period is associated with a protective layer covering the powder surface; the layer contains oxides, graphite-like structures, and organic compounds. It was found that the protective properties of the surface layer are mainly determined by the oxide component; the mechanism of its formation depends on the milling medium and time.
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Syugaev, A.V., Lomayeva, S.F. & Reshetnikov, S.M. Corrosion of Finely Dispersed Systems Based on Iron and Iron–Silicon Alloys in Neutral Media. I. Iron-Based Systems Prepared by Milling in Heptane and Heptane with Oleic Acid. Protection of Metals 40, 226–231 (2004). https://doi.org/10.1023/B:PROM.0000028914.30732.42
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DOI: https://doi.org/10.1023/B:PROM.0000028914.30732.42