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<p>This study investigates the effect of zinc alloying (0.2-2%) on the properties of biodegradable magnesium (Mg) alloys produced through powder metallurgy. Prolonged mechanical alloying, cold pressing, and sintering enhanced the hardness of Mg-Zn alloys by 9-12.5% and improved wear resistance, with Zn uniformly distributed in the Mg matrix without intermetallic compounds. Wear tests revealed that simulated body fluid initially reduced wear due to lubrication but later accelerated wear through abrasive–corrosive mechanisms. The results indicated that zinc was uniformly distributed throughout the magnesium matrix. The hardness of the material increased from 40 to 70&#xa0;HV, and the wear resistance also demonstrated a corresponding improvement. Microstructural analysis revealed an increase in porosity alongside a higher density. Among the alloys tested, MgZn<sub>2</sub> showed the best wear resistance, while pure magnesium exhibited the lowest. These findings emphasize the potential of Mg-Zn alloys as bioresorbable materials, with properties closely aligned to the mechanics of bone, paving the way for their application in biomedical fields.</p>

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Tribological Behavior of MgZn Alloys Produced by Powder Metallurgy: Influence of Zn in Dry and Simulated Body Fluid Environments

  • 期刊论文

  • 发表日期：

    2025年4月25日

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  • Rukiye Tekin,
  • Bilge Demir,
  • A. Najah Saud

摘要

This study investigates the effect of zinc alloying (0.2-2%) on the properties of biodegradable magnesium (Mg) alloys produced through powder metallurgy. Prolonged mechanical alloying, cold pressing, and sintering enhanced the hardness of Mg-Zn alloys by 9-12.5% and improved wear resistance, with Zn uniformly distributed in the Mg matrix without intermetallic compounds. Wear tests revealed that simulated body fluid initially reduced wear due to lubrication but later accelerated wear through abrasive–corrosive mechanisms. The results indicated that zinc was uniformly distributed throughout the magnesium matrix. The hardness of the material increased from 40 to 70 HV, and the wear resistance also demonstrated a corresponding improvement. Microstructural analysis revealed an increase in porosity alongside a higher density. Among the alloys tested, MgZn2 showed the best wear resistance, while pure magnesium exhibited the lowest. These findings emphasize the potential of Mg-Zn alloys as bioresorbable materials, with properties closely aligned to the mechanics of bone, paving the way for their application in biomedical fields.