Corrosion and tribocorrosion behaviour of titanium nitride thin films grown on titanium under different deposition times

Abstract

Ti and its alloys exhibit combination of unique properties for biomedical applications, however their poor triboelectrochemical behaviour is a major concern. Therefore, TiN coatings were deposited on cp-Ti (grade 4) by sputtering technique aiming the improvement of its tribocorrosion behaviour. The properties of the coated samples, using different TiN deposition times, were characterized by using grazing incidence X-ray diffraction, FIB-SEM, and nanoindentation. The corrosion behaviour was studied by electrochemical impedance spectroscopy and potentiodynamic polarization in 9 g/L NaCl solution at body temperature. Tribocorrosion tests were employed under open circuit potential by using a ball-on-plate tribometer with 1 N normal load, 3 mm total stroke length, 1 Hz frequency, and 1800 s sliding duration. The results suggested that the TiN coatings deposited during 80 min presented better corrosion and tribocorrosion behaviour as compared to the bare metal and TiN coatings deposited during 30 min.

A promising method to develop TiO2-based nanotubular surfaces on Ti-40Nb alloy with enhanced adhesion and improved tribocorrosion resistance

“…The Daimler-Benz Rockwell C adhesion test is a fast and easy method that has been studied to evaluate the adhesion of hard coatings [44,53,54] that can also be used for TNT layers [55]. The Daimler-Benz Rockwell-C adhesion test results are shown in Fig.…”

Magnetron Sputtered Thin Films Based on Transition Metal Nitride: Structure and Properties

“…Because of having a golden color, the TiN films are used as decorative coatings. [94] TiN thin films have their applications in different fields such as automobiles, [92] machining tools, [96] solar cells, [96] biomedical, [97][98][99] electroanalytical applications, [100] supercapacitors, [101,102] micro electromechanical systems (MEMS) devices, [86,103] aerospace, electronics, [104,105] etc.…”

Surface engineering of wrought and additive layer manufactured Ti-6Al-4V alloy for enhanced load bearing and bio-tribocorrosion applications

“…Furthermore, previous studies found TiN coatings nontoxic, biocompatible and bioactive with the ability to reduce the release of toxic metallic ions from Ti-6Al-4V alloy [11,[21][22][23]. Caha et al [24] reported that TiN coating improves corrosion and tribocorrosion performance of pure titanium substrate.…”