Corrosion Behavior in Magnesium-Based Alloys for Biomedical Applications

Area of Science:

• Biomaterials Science
• Corrosion Engineering
• Materials Science

Background:

• Magnesium alloys are promising for biomedical implants due to biocompatibility and biodegradability.
• Limited corrosion resistance hinders the clinical application of magnesium alloys.
• The complex corrosion mechanisms of magnesium alloys are influenced by material properties and environments.

Purpose of the Study:

• To review the multifactorial corrosion behavior and degradation/precipitation processes of magnesium alloys.
• To propose methods for modeling and preventing corrosion in magnesium-based materials.
• To explore strategies for controlling degradation rates and enhancing biological properties.

Main Methods:

• Literature review of magnesium alloy corrosion mechanisms.
• Analysis of multifactorial degradation and precipitation processes.
• Discussion of composition design, structural treatment, and surface processing techniques.

Main Results:

• Detailed review of the complex, multifactorial corrosion mechanisms of magnesium alloys.
• Identification of composition, structure, and surface treatments as key factors influencing corrosion.
• Proposal of methods for corrosion modeling and prevention.

Conclusions:

• Understanding magnesium alloy corrosion is crucial for their application in biomedical devices.
• Compositional control, structural modification, and surface engineering can mitigate corrosion.
• This review provides a foundation for designing advanced magnesium-based biomedical devices.