Electrochemical corrosion behavior of α-titanium alloys in simulated biological environments (comparative study).

Autor: Hrir H; Laboratory of Physical Chemistry and Biotechnology of Biomolecules and Materials, Hassan II University of Casablanca Faculty of Sciences and Technology Mohammedia 20650 Morocco Halahrir410@gmail.com., Layachi OA; Laboratory of Physical Chemistry and Biotechnology of Biomolecules and Materials, Hassan II University of Casablanca Faculty of Sciences and Technology Mohammedia 20650 Morocco Halahrir410@gmail.com., Boudouma A; Laboratory of Physical Chemistry and Biotechnology of Biomolecules and Materials, Hassan II University of Casablanca Faculty of Sciences and Technology Mohammedia 20650 Morocco Halahrir410@gmail.com., El Bouari A; Laboratory of Physical Chemistry, Materials and Catalysis (LCPMC), Faculty of Sciences Ben M'Sik, Hassan II University of Casablanca B.P 7955 Sidi Othmane Casablanca Morocco.; Laboratory of Inorganic Materials for Sustainable Energy Technologies, Mohammed VI Polytechnic University (UM6P) Lot 660-Hay Moulay Rachid Ben Guerir Morocco., Sidimou AA; Laboratoire d'Ingénierie des Matériaux pour l'Environnement et les Ressources Naturelles, Université Moulay Ismail de Meknès FST Errachidia BP 509 Boutalamine 52000 Errachidia Marocco., El Marrakchi M; Laboratory of Physical Chemistry and Biotechnology of Biomolecules and Materials, Hassan II University of Casablanca Faculty of Sciences and Technology Mohammedia 20650 Morocco Halahrir410@gmail.com., Khoumri E; Laboratory of Physical Chemistry and Biotechnology of Biomolecules and Materials, Hassan II University of Casablanca Faculty of Sciences and Technology Mohammedia 20650 Morocco Halahrir410@gmail.com.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2024 Nov 29; Vol. 14 (51), pp. 38110-38119. Date of Electronic Publication: 2024 Nov 29 (Print Publication: 2024).
DOI: 10.1039/d4ra05869k
Abstrakt: Titanium (Ti) and its alloys are widely utilized in orthopedic and dental applications due to their favorable mechanical properties and biocompatibility. Notably, titanium exhibits excellent corrosion resistance and can form a stable oxide layer, ensuring the longevity and functionality of implants in challenging physiological environments. This study investigates the corrosion behavior of α-Ti alloy in physiological saline solutions, emphasizing the role of key biomolecules found in the human body, including albumin, glycine, and glucose, as well as additional substances such as hydrogen peroxide (H 2 O 2 ) and hydroxyapatite (Hap). A comprehensive suite of techniques-namely, open-circuit potential measurements, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), and atomic force microscopy (AFM)-was employed to assess the effects of these biomolecules on corrosion behavior. The findings indicate that, unlike H 2 O 2 and Hap, the biomolecules studied significantly enhance the corrosion resistance of the α-Ti alloy in simulated physiological environments. H 2 O 2 , due to its strong oxidative properties, accelerates corrosion, while Hap induces ion release that adversely affects the alloy's stability. The observed improvement in corrosion resistance is attributed to the formation of a stable passive layer on the alloy's surface. Notably, this study presents the first long-term electrochemical and immersion tests conducted at 310 K, elucidating the effects of bovine serum albumin (BSA), H 2 O 2 , glycine, glucose, and Hap on the corrosion performance of the α-Ti alloy.
Competing Interests: The authors declare no competing interests.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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