We study the influence of external polarization with different potentials on the tribocorrosion behavior of 08Kh18N10T steel in contact with a corundum ball in a 3% NaCl solution. It is shown that the mechanical factor shifts the potential of pitting formation to the negative side by 0.17 V as compared with the surface without friction. The running-in time, friction coefficient, and material losses in the process of tribocorrosion qualitatively correlate with each other and depend on the applied electrode potential. It is shown that hydrogen released in the contact zone under the conditions of cathodic polarization embrittles the surface layers participating in the contact interaction. Moreover, hydrogen reduces oxide films and prevents their rapid formation on steel, which intensifies its wear. In addition, hydrogen facilitates deformation and increases the deformation zone near the friction track. Under the anodic polarization, we observe an increase in the number of pits in the friction area.
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 54, No. 2, pp. 134–139, March–April, 2018.
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Pokhmurs’kyi, V.I., Khoma, M.S., Vynar, V.A. et al. Influence of the External Polarization Potential on the Tribocorrosion Behavior of 08Kh18N10T Steel. Mater Sci 54, 279–285 (2018). https://doi.org/10.1007/s11003-018-0184-1
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DOI: https://doi.org/10.1007/s11003-018-0184-1