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<p>Titanium(Ti) and its alloys are widely regarded as materials of choice for orthopedic and dental applications due to their exceptional mechanical properties and outstanding biocompatibility. Their superior corrosion resistance and ability to form a stable protective oxide layer ensure the durability and functionality of implants even in complex physiological environments. In this study, advanced electrochemical tests were conducted to investigate the passive and electrochemical response of α-Titanium immersed in a physiological solution (0.9%NaCl) enriched with biomolecules found in body fluids, including albumin, glycine, glucose (C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>), hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>), and hydroxyapatite (HAp) under two studied temperatures (298.15&#xa0;K and 310&#xa0;K) and immersion periods of 3, 5, and 7 days. A comprehensive approach combining open-circuit potential (OCP) measurements, potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM), along with a design of experements (DOE) methodology, was employed to evaluate the synergistic effects of Biomolecules on corrosion behavior. The findings indicate that higher temperatures and prolonged immersion significantly degrade the passive layer of titanium, thereby increasing corrosion rates. Furthermore, pH was identified as a critical factor, with more acidic environments accelerating the corrosion precesses.</p>

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Electrochemical Response of α-Titanium to Biomolecule-Enhanced Physiological Environments: A Predictive Study

  • 期刊论文

  • 发表日期：

    2026年5月19日

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  • Hala Hrir,
  • Abderrazzak Boudouma,
  • Aicha Naboulsi,
  • Omar Ait Layachi,
  • Elmati Khoumri

摘要

Titanium(Ti) and its alloys are widely regarded as materials of choice for orthopedic and dental applications due to their exceptional mechanical properties and outstanding biocompatibility. Their superior corrosion resistance and ability to form a stable protective oxide layer ensure the durability and functionality of implants even in complex physiological environments. In this study, advanced electrochemical tests were conducted to investigate the passive and electrochemical response of α-Titanium immersed in a physiological solution (0.9%NaCl) enriched with biomolecules found in body fluids, including albumin, glycine, glucose (C6H12O6), hydrogen peroxide (H2O2), and hydroxyapatite (HAp) under two studied temperatures (298.15 K and 310 K) and immersion periods of 3, 5, and 7 days. A comprehensive approach combining open-circuit potential (OCP) measurements, potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM), along with a design of experements (DOE) methodology, was employed to evaluate the synergistic effects of Biomolecules on corrosion behavior. The findings indicate that higher temperatures and prolonged immersion significantly degrade the passive layer of titanium, thereby increasing corrosion rates. Furthermore, pH was identified as a critical factor, with more acidic environments accelerating the corrosion precesses.