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Abstract <p>Zinc, a promising material for biodegradable implants, is limited by its low mechanical strength. In this work, we report reinforcement of Zn with 5&#xa0;wt% of the alloy Fe–35Mn–5Si–0.25Cu to improve its mechanical performance. The reinforcement produced by mechanical alloying route exhibited face centered cubic (FCC) solid solution structure. The Zn composite prepared by double vacuum hot pressing at a temperature of 673&#xa0;K demonstrated a flexural strength of 124.5 ± 6.2&#xa0;MPa which is 89% higher than Zn. The corrosion current density was found to be 31.4 ± 1&#xa0;µA/cm<sup>2</sup> which is also higher than that of Zn at 5.39 ± 0.55&#xa0;µA/cm<sup>2</sup>. The thickness of the corrosion film over the Zn and Zn composite sample was calculated from the effective capacitance of the film and determined to be 1.55&#xa0;nm and 2.85&#xa0;nm, respectively. Irrespective of a thicker corrosion film, the Zn composite sample exhibited lower film resistance which indicates a non-homogeneous and porous nature of the film.</p> Graphical abstract <p></p>

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Mechanical and corrosion behavior of a biodegradable Zn composite reinforced with Fe–35Mn–5Si–0.25Cu alloy

  • 期刊论文

  • 发表日期：

    2026年4月16日

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  • Adrija Patra,
  • Ravishankar Suman,
  • Priyabrata Das,
  • Debashish Mohanta,
  • Srikant Gollapudi

摘要

Abstract

Zinc, a promising material for biodegradable implants, is limited by its low mechanical strength. In this work, we report reinforcement of Zn with 5 wt% of the alloy Fe–35Mn–5Si–0.25Cu to improve its mechanical performance. The reinforcement produced by mechanical alloying route exhibited face centered cubic (FCC) solid solution structure. The Zn composite prepared by double vacuum hot pressing at a temperature of 673 K demonstrated a flexural strength of 124.5 ± 6.2 MPa which is 89% higher than Zn. The corrosion current density was found to be 31.4 ± 1 µA/cm2 which is also higher than that of Zn at 5.39 ± 0.55 µA/cm2. The thickness of the corrosion film over the Zn and Zn composite sample was calculated from the effective capacitance of the film and determined to be 1.55 nm and 2.85 nm, respectively. Irrespective of a thicker corrosion film, the Zn composite sample exhibited lower film resistance which indicates a non-homogeneous and porous nature of the film.

Graphical abstract