Demirören, HülyaBuytoz, Soner2023-03-142023-03-142021Demiroren, H., & Buytoz, S. (2021). An electrochemical approach to evaluating surface coatings. International Journal of Surface Science and Engineering, 15(4), 294-306. doi:10.1504/IJSURFSE.2021.1209621749-785X1749-7868https://doi.org/10.1504/IJSURFSE.2021.120962https://hdl.handle.net/20.500.12428/3808In order to understand the influence of metal carbides and niobium carbides on electrochemical behaviour of Fe-based composite powder and FeNb powder coatings were added. Above mentioned composite layer was prepared on a medium carbon steel surface by using GTAW coating technique. The morphology of the coatings' surface was analysed by optical microscope, scanning electron microscope (SEM) equipped with an energy-dispersive spectroscopy (EDS) and X-ray diffractometer (XRD). Then the samples were exposed to seawater. Electrochemical impedance spectroscopy (EIS) method with triple electrode system was used in order to obtain Bode and Nyquist diagrams. Ag/AgCl electrode is used as reference electrode, and platin plate is counter electode in this system. As a result, adding NbC has harmful effect on the electrochemical behaviour of FeCrC coating powder.eninfo:eu-repo/semantics/closedAccessFe-Based CompositeCr7C3 CarbideNbC CarbideEISNyquist PlotArticle15429430610.1504/IJSURFSE.2021.120962Q4WOS:0007583667000032-s2.0-85125462354