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Plasma electrolytic oxidation of Mg-Ti couple metals fabricated by friction stir welding: Characterization and corrosion studies
, Article Materials Research Express ; Volume 6, Issue 8 , 2019 ; 20531591 (ISSN) ; Ghorbani, M ; Barati Darband, G ; Sharif University of Technology
Institute of Physics Publishing
2019
Abstract
In this study, plasma electrolytic oxidation (PEO) of Ti-Mg couple metal fabricated by friction stir welding (FSW) in silicate base solution has been addressed and effect of silicate concentration in the electrolyte on coating properties was studied. Microstructure, composition and corrosion resistance of coating were characterized using scanning electron microscopy(SEM), X-ray diffraction (XRD) and potentiodynamic polarization methods. Ti-Mg couple were successfully coated simultaneously in silicate electrolyte and results of this study indicated that silicate concentration has a considerable impact on microstructure and corrosion resistance of the coating. In 5 g l-1 sodium silicate...