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Bio-high entropy alloys: Progress, challenges, and opportunities.

Junyi Feng1, Yujin Tang2, Jia Liu2

  • 1School of Materials Engineering, Shanghai University of Engineering Science, Shanghai, China.

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|September 26, 2022
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Summary

Biological high-entropy alloys (Bio-HEAs) offer improved biocompatibility and mechanical properties for medical implants. This review highlights their potential to overcome limitations of traditional metallic biomaterials for better clinical outcomes.

Keywords:
biocompatibilitybiological high-entrogycompositon designimplantmechanical properties

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Area of Science:

  • Biomaterials Science
  • Materials Engineering
  • Biomedical Engineering

Background:

  • Traditional metallic implants face challenges with biocompatibility and adverse reactions.
  • There is an urgent need for advanced biomaterials with superior mechanical properties and biocompatibility.
  • High entropy alloys (HEAs) offer a vast compositional space and excellent mechanical characteristics.

Purpose of the Study:

  • To review the composition systems of biological high-entropy alloys (Bio-HEAs).
  • To introduce the biocompatibility and mechanical properties of Bio-HEAs relevant to human bone.
  • To propose future research directions for Bio-HEAs in biomedical applications.

Main Methods:

  • Literature review of recent advancements in Bio-HEAs.
  • Analysis of composition, biocompatibility, and mechanical properties.
  • Synthesis of findings to identify research gaps and future opportunities.

Main Results:

  • Bio-HEAs demonstrate promising biocompatibility and tunable mechanical properties.
  • These properties suggest Bio-HEAs are suitable candidates for biomedical applications, particularly bone implants.
  • Current research highlights the need for further theoretical and simulation studies.

Conclusions:

  • Bio-HEAs represent a novel class of biomaterials with significant potential for medical implants.
  • Further research should focus on composition-performance relationships, degradation, and clinical translation.
  • Advancing Bio-HEAs could lead to improved long-term clinical success in orthopedic and dental applications.