摘要
Plasma electrolytic oxidation(PEO)coatings were carried out in silicate-based electrolyte embedded with various amounts of carbon nanotube(CNT)additives(0,0.5,1,2 and 4 g/L)on AZ80 magnesium alloy substrate.Microstructure,tribological and electrochemical corrosion properties of the coated specimens were investigated.The results demonstrated that the increasing CNT additions into the electrolyte resulted in a gradual increase in the thickness of PEO-coating layer.The CNT addition to the electrolyte by 0.5 g/L resulted in a slight decrease in the roughness of PEO-coating above which it continually increased.Wear resistance of the PEO-coated specimens showed a gradual improvement with increasing CNT-incorporation within the coating.The electrochemical corrosion tests revealed that the best corrosion resistance was found after the CNT addition into the electrolyte by 0.5 g/L due to the better roughness values,more homogenous coating layers and less pore formation.
基金
supported by the Scientific Research Projects of Karabuk University(BAP)with project No.FYL-2020-2210。
作者简介
Huseyin Zengin,huseyinzengin@karabuk.edu.tr。
