Composite Coatings of AMg3 Alloy Formed by a Combination of Plasma Electrolytic Oxidation and Fluoropolymer Spraying
Dmitry V. Mashtalyar,
Konstantine V. Nadaraia,
Igor M. Imshenetskiy,
Evgeniy A. Belov,
Mariia S. Gerasimenko,
Sergey L. Sinebryukhov,
Sergey V. Gnedenkov
Affiliations
Dmitry V. Mashtalyar
Department of Electrochemical Systems and Processes of Surface Modification, Institute of Chemistry FEB RAS, 159 pr. 100-Letiya Vladivostoka, 690022 Vladivostok, Russia
Konstantine V. Nadaraia
Department of Electrochemical Systems and Processes of Surface Modification, Institute of Chemistry FEB RAS, 159 pr. 100-Letiya Vladivostoka, 690022 Vladivostok, Russia
Igor M. Imshenetskiy
Department of Electrochemical Systems and Processes of Surface Modification, Institute of Chemistry FEB RAS, 159 pr. 100-Letiya Vladivostoka, 690022 Vladivostok, Russia
Evgeniy A. Belov
Department of Electrochemical Systems and Processes of Surface Modification, Institute of Chemistry FEB RAS, 159 pr. 100-Letiya Vladivostoka, 690022 Vladivostok, Russia
Mariia S. Gerasimenko
Department of Electrochemical Systems and Processes of Surface Modification, Institute of Chemistry FEB RAS, 159 pr. 100-Letiya Vladivostoka, 690022 Vladivostok, Russia
Sergey L. Sinebryukhov
Department of Electrochemical Systems and Processes of Surface Modification, Institute of Chemistry FEB RAS, 159 pr. 100-Letiya Vladivostoka, 690022 Vladivostok, Russia
Sergey V. Gnedenkov
Department of Electrochemical Systems and Processes of Surface Modification, Institute of Chemistry FEB RAS, 159 pr. 100-Letiya Vladivostoka, 690022 Vladivostok, Russia
This paper presents the results of an investigation of the changes in the corrosion, wear resistance, and wettability of composite coatings formed on the AMg3 alloy through plasma electrolytic oxidation (PEO) and subsequent spraying with an organofluorine polymer. The evaluation of the electrochemical properties of the composite layers revealed a decrease in the corrosion current density compared with the PEO coating (from 3.8 × 10−8 to 3.1 × 10−11 A/cm2). The analysis of the wear resistance of composite coatings established that the application of this type of coating reduced the wear of the samples by two orders of magnitude when compared with the PEO layer. Using the contact-angle measurement, it was found that with an increase in the number of polymer spray applications, the wettability of coatings decreased, so the contact angle for the composite coating with triple fluoropolymer application increased by 134.3° compared to the base PEO coating.
