Plasma electrolytic oxidation treatment mode influence on corrosion properties of coatings obtained on Zr-1Nb alloy in silicate-phosphate electrolyte
R G FarrakhovV R MukaevaA R FatkullinM V GorbatkovP V TarasovD M LazarevN Ramesh BabuE V Parfenov
Department of Theoretical Basis of Electrical Engineering,Ufa State Aviation Technical UniversityDepartment of Natural Sciences and General Engineering,Kumertau Campus of Ufa State Aviation Technical UniversityDepartment of Engineering Technology,Ufa State Aviation Technical UniversityDepartment of Metallurgical and Materials Engineering,National Institute of TechnologyAcademy of Sciences of Republic of Bashkortostan
摘要：This research is aimed at improvement of corrosion properties for Zr-1 Nb alloy via plasma electrolytic oxidation（PEO）. The coatings obtained in DC, pulsed unipolar and pulsed bipolar modes were assessed using SEM, XRD, PDP and EIS techniques. It was shown that pulsed unipolar mode provides the PEO coatings having promising combination of the coating thickness, surface roughness, porosity, corrosion potential and current density, and charge transfer resistance, all contributing to corrosion protection of the zirconium alloy for advanced fuel cladding applications.