Scholarlink

<p>Although magnesium (Mg)-based alloys have attracted considerable attention for use in temporary biomedical implants due to their biocompatibility and biodegradability, their clinical application has been limited by their inherently high degradation rate in physiological environments. To mitigate this limitation, hydroxyapatite (HAp) coatings were applied to Mg-4Zn-0.2Ca-(x)Y (yttrium) (x = 3, 6, 9, 12) % wt. alloys using a thermal coating technique aimed at enhancing corrosion resistance. Three different HAp coating thicknesses—50&#xa0;μm, 100&#xa0;μm, and 150&#xa0;μm—were deposited onto the magnesium alloy substrates. Characterization via field emission scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy (EDX) confirmed the formation of a dense, homogeneous, and compact HAp coating layer. The in vitro degradation tests revealed a substantial improvement in corrosion resistance, attributed to the protective nature of the HAp barrier. Furthermore, bioactivity assessments conducted in Hank’s balanced salt solution indicated the formation of a uniform and adherent layer of bone-like apatite on the coated surfaces, affirming the alloy’s potential for osteointegration. The application of HAp coating not only enhanced the corrosion resistance but also significantly improved the compressive and tensile strength of the magnesium alloy. Overall, the coated Mg-4Zn-0.2Ca-(x)Y alloys exhibit promising characteristics for use in temporary orthopedic and biodegradable implant applications, owing to their improved mechanical performance and superior resistance to physiological degradation.</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

Hydroxyapatite coating performance enhancement and characterization for Mg-Zn-Ca-Y alloys for biomedical application

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年2月10日

查看全文
  • S. S. Gholap,
  • R. R. Navthar,
  • K. B. Kale,
  • S. H. Gawande

摘要

Although magnesium (Mg)-based alloys have attracted considerable attention for use in temporary biomedical implants due to their biocompatibility and biodegradability, their clinical application has been limited by their inherently high degradation rate in physiological environments. To mitigate this limitation, hydroxyapatite (HAp) coatings were applied to Mg-4Zn-0.2Ca-(x)Y (yttrium) (x = 3, 6, 9, 12) % wt. alloys using a thermal coating technique aimed at enhancing corrosion resistance. Three different HAp coating thicknesses—50 μm, 100 μm, and 150 μm—were deposited onto the magnesium alloy substrates. Characterization via field emission scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy (EDX) confirmed the formation of a dense, homogeneous, and compact HAp coating layer. The in vitro degradation tests revealed a substantial improvement in corrosion resistance, attributed to the protective nature of the HAp barrier. Furthermore, bioactivity assessments conducted in Hank’s balanced salt solution indicated the formation of a uniform and adherent layer of bone-like apatite on the coated surfaces, affirming the alloy’s potential for osteointegration. The application of HAp coating not only enhanced the corrosion resistance but also significantly improved the compressive and tensile strength of the magnesium alloy. Overall, the coated Mg-4Zn-0.2Ca-(x)Y alloys exhibit promising characteristics for use in temporary orthopedic and biodegradable implant applications, owing to their improved mechanical performance and superior resistance to physiological degradation.