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AZ63/Ti/Zr Nanocomposite for Bone-Related Biomedical Applications.

T Sathish1, R Saravanan1, Sarange Shreepad2

  • 1Department of Mechanical Engineering, SIMATS School of Engineering, Chennai, 602 105 Tamil Nadu, India.

Biomed Research International
|May 15, 2023
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Summary
This summary is machine-generated.

This study developed a magnesium alloy composite for biomedical implants, optimizing nanoparticle reinforcement to minimize wear and corrosion. The 12% reinforced composite showed superior performance, offering a promising material for medical fixation devices.

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Nanotechnology

Background:

  • Magnesium alloys are in high demand for biomedical applications, especially in tissue engineering, due to their biodegradability.
  • Current limitations require fixation devices that can withstand implant biodegradation.
  • Composite technology offers a solution to tailor material properties for specific biomedical needs.

Purpose of the Study:

  • To develop a composite material for manufacturing fixation screws for biomedical implants.
  • To investigate the effect of zirconium (Zr) and titanium (Ti) nanoparticle reinforcement on AZ63 magnesium alloy.
  • To optimize composite properties for enhanced performance in corrosive and tribological environments.

Main Methods:

  • AZ63 magnesium alloy was reinforced with Zr and Ti nanoparticles using stir casting.
  • Composite samples with varying reinforcement percentages (3%, 6%, 9%, 12%) were prepared.
  • Corrosion and wear studies were conducted, with parameters optimized using Taguchi analysis.

Main Results:

  • The 12% reinforced composite exhibited the minimum wear rate under optimized conditions (60 N load, 1 m/s speed, 1500 m distance).
  • The same composite showed a minimal corrosion rate of 0.0076 mm/year in a 5% NaCl solution at pH 9 for 24 hours.
  • A prediction model was developed based on the experimental findings.

Conclusions:

  • The developed AZ63 magnesium alloy composite with Zr and Ti nanoparticles demonstrates excellent potential for biomedical fixation devices.
  • Optimized reinforcement significantly reduces wear and corrosion, crucial for implant longevity.
  • This composite material offers a viable solution for durable and biodegradable medical implants.