Scholarlink

<p>Ti-6Al-4&#xa0;V alloys are widely used in implant technology, particularly as dental implants, thanks to their superior mechanical properties and high corrosion resistance. Nevertheless, prolonged exposure to aggressive oral environments can degrade their surface passivity and, over time, reduce their corrosion resistance and biocompatibility. In this study, forsterite (Mg<sub>2</sub>SiO<sub>4</sub>) was synthesized from halloysite nanoclay as the silica source and used as a bioactive ceramic coating on Ti-6Al-4&#xa0;V alloys to improve corrosion resistance. The coating was prepared by electrophoretic deposition, with variations in voltage, deposition time, and silver (Ag) nanoparticle concentration. Scanning electron microscopy confirmed successful deposition of the Mg<sub>2</sub>SiO<sub>4</sub>/Ag coating on the Ti-6Al-4&#xa0;V substrate, and electrochemical impedance spectroscopy identified the optimal corrosion resistance at deposition parameters of 20&#xa0;V, 5&#xa0;min, and 0.25 mmol Ag. Electrochemical tests revealed that Mg<sub>2</sub>SiO<sub>4</sub>/Ag<sub>0.25mmol</sub> had the highest corrosion rate (1.13 µA/cm²), whereas uncoated Ti-6Al-4&#xa0;V alloys exhibited the lowest corrosion rate (22.68 µ/ cm²). Overall, the findings demonstrate that Mg₂SiO₄/Ag composite coatings derived from natural clay sources offer a promising, sustainable strategy to develop long-lasting, corrosion-resistant coatings for dental implant applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Electrochemical performance of Ag modified Mg₂SiO₄-clay based coatings for Ti-6Al-4 V alloy in dental implants

  • 期刊论文

  • 发表日期：

    2026年8月4日

查看全文
  • Nur Nasyita Kamaruddin,
  • Mariya Kadiri,
  • Zainal Abidin Ali,
  • Syed Bahari Ramadzan Syed Adnan,
  • Gopinath Venkatraman,
  • Hendra Hermawan

摘要

Ti-6Al-4 V alloys are widely used in implant technology, particularly as dental implants, thanks to their superior mechanical properties and high corrosion resistance. Nevertheless, prolonged exposure to aggressive oral environments can degrade their surface passivity and, over time, reduce their corrosion resistance and biocompatibility. In this study, forsterite (Mg2SiO4) was synthesized from halloysite nanoclay as the silica source and used as a bioactive ceramic coating on Ti-6Al-4 V alloys to improve corrosion resistance. The coating was prepared by electrophoretic deposition, with variations in voltage, deposition time, and silver (Ag) nanoparticle concentration. Scanning electron microscopy confirmed successful deposition of the Mg2SiO4/Ag coating on the Ti-6Al-4 V substrate, and electrochemical impedance spectroscopy identified the optimal corrosion resistance at deposition parameters of 20 V, 5 min, and 0.25 mmol Ag. Electrochemical tests revealed that Mg2SiO4/Ag0.25mmol had the highest corrosion rate (1.13 µA/cm²), whereas uncoated Ti-6Al-4 V alloys exhibited the lowest corrosion rate (22.68 µ/ cm²). Overall, the findings demonstrate that Mg₂SiO₄/Ag composite coatings derived from natural clay sources offer a promising, sustainable strategy to develop long-lasting, corrosion-resistant coatings for dental implant applications.