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Corrosion resistance of Co−Cr−W coatings obtained by electrodeposition

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Abstract

Corrosion-resistant Co−Cr−W coatings are electrolytically deposited onto the surface of low-carbon (0.25 wt.% C) steel samples from a Cr(III) chloride-based water–dimethylformamide (DMF) bath. Polarization measurements show that corrosion current densities in both sodium chloride and Hank’s solutions are about 10−6 A cm−2. As the obtained coatings contain a certain amount of cracks, they should be deposited onto the surface of copper underlayer in order to provide better protective ability. An XPS study showed that the surface of Co−Cr−W coatings is enriched with chromium compounds as a result of exposure to the corrosive solution.

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Acknowledgments

This work was supported by the Ministry of Education and Science of Russian Federation (project N 4.4584.2017/BY).

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Authors and Affiliations

  1. DI Mendeleev University of Chemical Technology, Moscow, Russia

    Vitaly V. Kuznetsov, Elena A. Filatova, Alina V. Telezhkina & Sergey S. Kruglikov

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  1. Vitaly V. Kuznetsov
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  2. Elena A. Filatova
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  3. Alina V. Telezhkina
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  4. Sergey S. Kruglikov
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Correspondence to Vitaly V. Kuznetsov.

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Kuznetsov, V.V., Filatova, E.A., Telezhkina, A.V. et al. Corrosion resistance of Co−Cr−W coatings obtained by electrodeposition. J Solid State Electrochem 22, 2267–2276 (2018). https://doi.org/10.1007/s10008-018-3929-8

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  • DOI: https://doi.org/10.1007/s10008-018-3929-8

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