Abstract
The corrosion-electrochemical behavior of Ni-P coatings in acidic sulfate solutions (a pH of 0.5–2.0) has been studied. It has been found that the hydrogen evolution reaction occurs through the discharge-electrochemical desorption route. Ni-P coatings are more efficient cathode materials in acidic sulfate media than nickel is. Preliminary cathodic polarization and an inert atmosphere have little effect on the behavior of the polarization curves of Ni-P coatings containing 13.4% phosphorus and significantly accelerate the anodic dissolution of coatings containing 8.0 and 11.1% phosphorus.
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Original Russian Text © I.V. Petukhov, N.A. Medvedeva, I.R. Subakova, V.I. Kichigin, 2013, published in Korroziya: Materialy, Zashchita, 2013, No. 1, pp. 36–43.
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Petukhov, I.V., Medvedeva, N.A., Subakova, I.R. et al. Corrosion-electrochemical behavior of Ni-P coatings in deaerated acidic sulfate solutions. Prot Met Phys Chem Surf 50, 875–882 (2014). https://doi.org/10.1134/S2070205114070144
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DOI: https://doi.org/10.1134/S2070205114070144