Corrosion modeling of magnesium-based medical implants

Biodegradable metals have been under significant research as alternatives to the nonbiodegradable materials in the field of medical implants. In this scope, magnesium and its alloys were widely investigated due to their superior biocompatibility. However, magnesium is a highly active metal and has a high corrosion rate in aqueous environments especially body fluids. Considerable research was done to develop numerical models towards an inexpensive designing tool to assess the change of the implant’s geometry and mechanical strength during degradation. To the best of our knowledge, the effect of coating was not investigated before in the literature in terms of modeling the corrosion behavior. In this work, a 2D finite element model is introduced to calibrate a diffusion-controlled corrosion model in high purity magnesium whilst investigating the effect of adding the coating layer numerically. In vitro corrosion tests and solubility tests, were conducted to calibrate the model for the first time.

Grantor dc:publisher

University of Tennessee at Chattanooga

Year dc:date.available

2022

Author dc:creator

• Abdalla, Moataz

Contributors dc:contributor

• Ibrahim, Hamdy
• Margraves, Charles H.; Mahtabi Oghani, Mohammad Javad, 1982-
• College of Engineering and Computer Science

• Biodegradable products
• Corrosion
• Finite element method
• Mathematical models
• Orthopedic implants

Licence

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language

English, eng

Repository record dc:identifier

https://scholar.utc.edu/theses/704

OAI identifier oai:identifier

oai:scholar.utc.edu:theses-1884