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<p>This study compares the corrosion behavior and surface bioactivity of a Mg alloy (ZE41) and a novel FSP-fabricated ZE41/Ti–6Al–4V/SiC metal matrix composite after immersion in simulated body fluid. The field emission scanning electron microscopy micrograph of metal matrix composite (MMC) exhibits a refined grain structure with uniformly dispersed reinforcement particles, confirming successful integration of Ti, Al, V, Si, and C into the Mg matrix. While the base alloy exhibited severe localized corrosion with deep pits, the MMC showed significantly enhanced corrosion resistance, with degradation rates decreasing from 4.6&#xa0;mm/year to 0.86 mm/year (81% reduction). Energy-dispersive spectroscopy confirmed that the dispersed reinforcements promoted passivation and reduced galvanic corrosion. The MMC also displayed superior surface distribution of Ca and P, indicating improved bioactivity.</p>

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In vitro corrosion behavior of novel FSP-fabricated ZE41/Ti–6Al–4V/SiC metal matrix composite for biomedical implant applications

  • 期刊论文

  • 发表日期：

    2025年8月29日

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  • Annayath Maqbool,
  • Noor Zaman Khan,
  • Tariq Ahmad,
  • Adil Nazeer,
  • Suhail Ahmed Manroo,
  • Aqib Abdullah,
  • Saad Parvez,
  • Babar Ahmad

摘要

This study compares the corrosion behavior and surface bioactivity of a Mg alloy (ZE41) and a novel FSP-fabricated ZE41/Ti–6Al–4V/SiC metal matrix composite after immersion in simulated body fluid. The field emission scanning electron microscopy micrograph of metal matrix composite (MMC) exhibits a refined grain structure with uniformly dispersed reinforcement particles, confirming successful integration of Ti, Al, V, Si, and C into the Mg matrix. While the base alloy exhibited severe localized corrosion with deep pits, the MMC showed significantly enhanced corrosion resistance, with degradation rates decreasing from 4.6 mm/year to 0.86 mm/year (81% reduction). Energy-dispersive spectroscopy confirmed that the dispersed reinforcements promoted passivation and reduced galvanic corrosion. The MMC also displayed superior surface distribution of Ca and P, indicating improved bioactivity.