Electrochemical and elemental characteristics of nano-cornposite MAO coatings on the AZ۳۱B substrate fabricated in different times and current densities
محل انتشار: اولین همایش مهندسی عمران و منابع زمین
سال انتشار: 1401
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 129
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شناسه ملی سند علمی:
CEREENG01_096
تاریخ نمایه سازی: 11 اردیبهشت 1402
چکیده مقاله:
Micro-Arc Oxidation (MAO) also called Plasma Electrolytic Oxidation (PEO), Anodic SparkDeposition (ASD) is a relatively modern surface treatment providing elevated corrosion and wearresistance especially for light weight active metals Electrochemical Impedance Spectroscopy (EIS) ofnano-composite Micro Arc Oxidation (MAO) coatings containing graphene nanoparticles wasinvestigated. Elemental analysis of coatings via Energy-Dispersive X-ray Spectroscopy (EDS)technique was also performed. The relation between the results of these two tests is explai in thispaper. The parameter of current density was changed to fabricate two different types of ceramiccoatings. Regarding Scanning Electron Microssopy (SEM) cross images of coatings, equivalentcircuits were drawn for each Electrochemical Impedance Spectroscopy (EIS) tested sample andcorresponding values of the circuits’ element were estimated. It was found that increasing currentdensity of coating process resulted in the composition of the outer layer of the coatings change and itsresistance against crossing electrolyte increase; on the other hand its capacity property enhanced property enjamcedbecause of increasing the surface area.
کلیدواژه ها:
نویسندگان
Hadi Nasiri Vatan
Department of Petroleum, Mining and MaterialEngineering, Faculty of Civil and Earth ResourcesEngineering, Central Tehran Branch, Islamic AzadUniversity, Tehran, Iran
Mazdak Izadi
Department of Materials Engineering, Hamedan University of Technology, Hamedan, Iran