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<p>This study investigates antibacterial behaviour of plasma electrolytic oxidation (PEO) coated Ti-6Al-7Nb for biomedical applications. Antibacterial coating is developed on Ti6Al7Nb by plasma electrolytic oxidation (PEO) technique. sodium metasilicate (Na<sub>2</sub>SiO<sub>3</sub>), sodium phosphate dodecahydrate (Na<sub>3</sub>PO<sub>4</sub>·12&#xa0;H<sub>2</sub>O) were used as an electrolyte. Silver nano particles are used for antibacterial property. To determine how varying percentages of silver nanoparticles affect their antibacterial properties, three different percentages 0.5, 1.0, and 1.5% are used. The size of the zone of inhibition approach was used to measure the antibacterial property of coated Ti6Al7Nb titanium alloy. The coated surfaces were characterized using FESEM and EDS techniques. Phases analysis was done with XRD technique. Corrosion resistance of coating is checked by EIS technique. The incorporation of AgNPs enhances antibacterial efficacy against <i>S. aureus</i> and <i>E. coli</i>, with the highest inhibition zones (17.33&#xa0;mm, 17.5&#xa0;mm) at 1.5&#xa0;g/L AgNP concentration. Also, it was observed that with increase in silver nanoparticles percentage there are improvement in hardness and corrosion resistance of PEO coated Ti6Al7Nb. These findings show that PEO-coated Ti-6Al-7Nb is a good option for biomedical applications as it shows enhanced hardness, corrosion resistance, and antibacterial activity.</p>

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Antibacterial Activity of Plasma Electrolytic Oxidation Coated Ti6Al7Nb for Biomedical Applications

  • 期刊论文

  • 发表日期：

    2025年12月28日

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  • Pralhad Pesode,
  • Shivprakash Barve

摘要

This study investigates antibacterial behaviour of plasma electrolytic oxidation (PEO) coated Ti-6Al-7Nb for biomedical applications. Antibacterial coating is developed on Ti6Al7Nb by plasma electrolytic oxidation (PEO) technique. sodium metasilicate (Na2SiO3), sodium phosphate dodecahydrate (Na3PO4·12 H2O) were used as an electrolyte. Silver nano particles are used for antibacterial property. To determine how varying percentages of silver nanoparticles affect their antibacterial properties, three different percentages 0.5, 1.0, and 1.5% are used. The size of the zone of inhibition approach was used to measure the antibacterial property of coated Ti6Al7Nb titanium alloy. The coated surfaces were characterized using FESEM and EDS techniques. Phases analysis was done with XRD technique. Corrosion resistance of coating is checked by EIS technique. The incorporation of AgNPs enhances antibacterial efficacy against S. aureus and E. coli, with the highest inhibition zones (17.33 mm, 17.5 mm) at 1.5 g/L AgNP concentration. Also, it was observed that with increase in silver nanoparticles percentage there are improvement in hardness and corrosion resistance of PEO coated Ti6Al7Nb. These findings show that PEO-coated Ti-6Al-7Nb is a good option for biomedical applications as it shows enhanced hardness, corrosion resistance, and antibacterial activity.