Evaluation of the Tribological and Corrosion Resistance Properties of 24-Bilayer TiN/TiAlN Coatings in Simulated Body Fluid

The tribocorrosive behavior of [TiN/TiAlN] coatings, consisting of 24 bilayers with a bilayer period (Λ) of 125 nm, was evaluated. There is a lack of studies on the tribocorrosion of TiN/TiAlN multilayer coatings applied to metallic prostheses. These coatings were obtained using a reactive RF magnet...

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Bibliographic Details
Published in:Tribology in industry 2024-12, Vol.46 (4), p.677-694
Main Authors: Arnulfo Aperador Chaparro, Willian, Cesar Caicedo Angulo, Julio, Bautista-Ruiz, Jorge
Format: Article
Language:English
Subjects:
Atomic structure
Bilayers
biocompatible materials
Biomedical materials
Body fluids
Coatings
coatings [tin/tialn]
Coefficient of friction
Corrosion rate
Corrosion resistance
Electrochemical impedance spectroscopy
Face centered cubic lattice
Friction resistance
Magnetron sputtering
Microscopy
Multilayers
Prostheses
roughness
Titanium nitride
tribocorrosion
Tribology
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Summary:The tribocorrosive behavior of [TiN/TiAlN] coatings, consisting of 24 bilayers with a bilayer period (Λ) of 125 nm, was evaluated. There is a lack of studies on the tribocorrosion of TiN/TiAlN multilayer coatings applied to metallic prostheses. These coatings were obtained using a reactive RF magnetron sputtering system and deposited onto a Ti6Al4V alloy. This study represents the first evaluation of the tribocorrosive behavior of these coatings in simulated physiological environments. Various characterization techniques were employed, including X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), pin-on-disk testing, electrochemical impedance spectroscopy (EIS), and Tafel curves. The coatings exhibited a face-centered cubic (FCC) structure, characterized by a partial arrangement of Ti and Al atoms. The research is motivated by the need for tribocorrosion-resistant coatings to enhance the durability of metallic prostheses. The results demonstrated a friction coefficient of 0.053 and a corrosion rate of 0.025 µm/year, highlighting the effectiveness of the coating. Changes in roughness were observed; however, no significant alterations in its formation were noted.
ISSN:0354-8996
2217-7965
DOI:10.24874/ti.1730.08.24.10