title: Effect of plasma nitriding treatment on structural, tribological and electrochemical properties of commercially pure titanium.
abstract: In this study, plasma nitriding treatment was applied to commercially pure titanium (Grade 2). Structural properties, electrochemical and tribological behaviours of the nitrided pure titanium specimens were comparatively investigated. Microstructure and morphology of the plasma nitrided specimens were analysed by X-ray diffraction and scanning electron microscopy. Furthermore, corrosion tests were conducted in Ringer's solution, which represents a human body environment, to determine electrochemical properties. Then, tribological and frictional properties were investigated using pin-on-disc tribometer, and a micro-hardness tester was used to measure the hardness of the coatings. The results showed that plasma nitrided specimens exhibited higher surface hardness than the untreated specimens did. In addition, the plasma nitrided specimens at 700 °C presented significantly better performance than the other plasma nitrided specimens (at 500 °C and 600 °C) under dry wear conditions. Moreover, corrosion test results showed that corrosion behaviours of untreated and nitrided samples had similar characteristic.
authors.affiliation: Department of Mechanical Engineering, Faculty of Engineering, Gümüşhane University, Gümüşhane, Turkey ilh.celik@gmail.com ilhancelik@gumushane.edu.tr.
authors.forename: İlhan
authors.initials: İ
authors.lastname: Çelik
authors.affiliation: Department of Mechanical Engineering, Faculty of Engineering, Atatürk University, Erzurum, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Karakan
mesh_terms: D003343:Corrosion; D004563:Electrochemistry; D017276:Friction; D006244:Hardness; D058626:Plasma Gases / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D058626:Plasma Gases; C041500:titanium nitride; D014025:Titanium
keywords: Titanium; corrosion; hardness; plasma nitriding; wear