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<p><b>Astract</b>. Surface properties of 316 low-carbon stainless steel (316&#xa0;L SS) for orthopedic applications can be improved by depositing biocompatible, wear and corrosion resistance composite coating via electrophoretic deposition. In this study, silver and cerium doped bioactive glass particles (Ag-Ce-BGs) were synthesized and incorporated into polyether ether ketone to deposit a composite coating at an applied electric field of 20&#xa0;V/cm for 3&#xa0;min. Scanning electron microscopy revealed a relatively homogeneous and densely packed coatings of ~ 30 μm . However, some localized agglomerate were present on the surface of the composite coating. The composite coating exhibited a moderate hydrophilic nature with a surface roughness of 1.60 ± 0.04&#xa0;μm. Energy-dispersive X-ray spectroscopy confirmed the presence of Ag, Ce, Ca, and Si, indicating the successful incorporation of Ag-Ce-BGs in the composite coating. Fourier transform infrared spectroscopy validated the integration of Ag-Ce-BGs with PEEK by showing the presence of their characteristic functional groups in the composite coating. The turbidity test demonstrated a possible antibacterial activity against gram positive Staphylococcus aureus and gram negative Escherichia coli strains. In-vitro cellular study demonstrated that composite coating is biocompatible with osteoblast cells. Compared with the 316&#xa0;L SS, the composite coating exhibited superior corrosion resistance determined by electrochemical impedance spectroscopy ,which revealed the charge transfer resistance of 2.14 × 10<sup>5</sup> Ω cm² and potentiodynamic polarization showing a reduced corrosion rate of 0.0008 mpy. The composite coating demonstrated 82 ± 1.5% cell viability, released 27.05 ± 1.45 ppm Ag<sup>+</sup> and 13.15 ± 1.33 ppm Ce<sup>+ 3</sup> respectively and exhibited an ALP activity of 47 ± 2.5 ng/mL. All data indicated that composite coating can enhance the surface characteristics of 316&#xa0;L SS for orthopaedic applications.</p>

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Manufacturing of silver– cerium doped mesoporous bioactive glass nanoparticles/polyether ether ketone composite coating to improve wear and corrosion resistance of biomedical implants

  • 期刊论文

  • 发表日期：

    2026年7月23日

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  • Khalil Ahmad,
  • Khurram Yaqoob,
  • Akbar Niaz,
  • Muhammad Iftikhar Faraz,
  • Syed Quadir Moinuddin,
  • Muhammad Atiq Ur Rehman

摘要

Astract. Surface properties of 316 low-carbon stainless steel (316 L SS) for orthopedic applications can be improved by depositing biocompatible, wear and corrosion resistance composite coating via electrophoretic deposition. In this study, silver and cerium doped bioactive glass particles (Ag-Ce-BGs) were synthesized and incorporated into polyether ether ketone to deposit a composite coating at an applied electric field of 20 V/cm for 3 min. Scanning electron microscopy revealed a relatively homogeneous and densely packed coatings of ~ 30 μm . However, some localized agglomerate were present on the surface of the composite coating. The composite coating exhibited a moderate hydrophilic nature with a surface roughness of 1.60 ± 0.04 μm. Energy-dispersive X-ray spectroscopy confirmed the presence of Ag, Ce, Ca, and Si, indicating the successful incorporation of Ag-Ce-BGs in the composite coating. Fourier transform infrared spectroscopy validated the integration of Ag-Ce-BGs with PEEK by showing the presence of their characteristic functional groups in the composite coating. The turbidity test demonstrated a possible antibacterial activity against gram positive Staphylococcus aureus and gram negative Escherichia coli strains. In-vitro cellular study demonstrated that composite coating is biocompatible with osteoblast cells. Compared with the 316 L SS, the composite coating exhibited superior corrosion resistance determined by electrochemical impedance spectroscopy ,which revealed the charge transfer resistance of 2.14 × 105 Ω cm² and potentiodynamic polarization showing a reduced corrosion rate of 0.0008 mpy. The composite coating demonstrated 82 ± 1.5% cell viability, released 27.05 ± 1.45 ppm Ag+ and 13.15 ± 1.33 ppm Ce+ 3 respectively and exhibited an ALP activity of 47 ± 2.5 ng/mL. All data indicated that composite coating can enhance the surface characteristics of 316 L SS for orthopaedic applications.