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<p>With the growing demand for advanced biomaterials, titanium-based alloys have garnered considerable attention, particularly Ti-Zr alloys due to their superior mechanical strength, excellent biocompatibility, and notably, their enhanced corrosion resistance within physiological environments. In this study, a Ti–20 at% Zr alloy was synthesized using the powder metallurgy technique for potential biomedical use. The influence of compaction pressure and sintering temperature on the alloy’s porosity and microstructure was systematically analyzed through X-ray diffraction (XRD) and scanning electron microscopy (SEM). The alloy microstructure predominantly exhibited two distinct phases, denoted as α and α′. Additionally, crystal lattice parameters, grain size and micro-stresses were calculated using XRD peaks. It was understood that sintering temperature reduces micro-stresses by expanding the grain volume. Furthermore, electrochemical corrosion testing was conducted to evaluate the alloy’s corrosion performance, and in vivo biocompatibility assessments were performed using a rat model. Findings revealed that increasing the compaction pressure and sintering temperature led to a reduction in porosity. Overall, the Ti–20 at% Zr alloy demonstrated promising bioactivity, remarkable biocompatibility, and robust resistance to corrosion, underscoring its suitability for biomedical applications.</p>

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Effect of sintering temperature on microstructure of TiZr alloy fabricated via powder metallurgy for biomedical applications

  • 期刊论文

  • 发表日期：

    2025年10月17日

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  • Mehmet Kaya,
  • Ömer Çakmak,
  • Abdurrahman Akkuş,
  • Ebru Elibol Annaç,
  • Mustafa Köm

摘要

With the growing demand for advanced biomaterials, titanium-based alloys have garnered considerable attention, particularly Ti-Zr alloys due to their superior mechanical strength, excellent biocompatibility, and notably, their enhanced corrosion resistance within physiological environments. In this study, a Ti–20 at% Zr alloy was synthesized using the powder metallurgy technique for potential biomedical use. The influence of compaction pressure and sintering temperature on the alloy’s porosity and microstructure was systematically analyzed through X-ray diffraction (XRD) and scanning electron microscopy (SEM). The alloy microstructure predominantly exhibited two distinct phases, denoted as α and α′. Additionally, crystal lattice parameters, grain size and micro-stresses were calculated using XRD peaks. It was understood that sintering temperature reduces micro-stresses by expanding the grain volume. Furthermore, electrochemical corrosion testing was conducted to evaluate the alloy’s corrosion performance, and in vivo biocompatibility assessments were performed using a rat model. Findings revealed that increasing the compaction pressure and sintering temperature led to a reduction in porosity. Overall, the Ti–20 at% Zr alloy demonstrated promising bioactivity, remarkable biocompatibility, and robust resistance to corrosion, underscoring its suitability for biomedical applications.