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ASM Handbook

Materials for Medical Devices

Edited by
Roger J. Narayan
Roger J. Narayan
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ASM International
Volume
23
ISBN electronic:
978-1-62708-198-6
Publication date:
2012
Book Chapter

Corrosion Testing of Implantable Medical Devices

By
Miroslav Marek
Miroslav Marek
Georgia Institute of Technology
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Published:
2012
Page range:
56 - 72
Publication history
June 19, 2012

Abstract

The interaction of an implant with the human body environment may result in degradation of the implant, called corrosion. This article discusses the corrosion testing of metallic implants and implant materials. The corrosion environments for medical implants are the extracellular human body fluids, very complex solutions containing electrolytes and nonelectrolytes, inorganic and organic constituents, and gases. The article describes the fundamentals of electrochemical corrosion testing and provides a brief discussion on various types of corrosion tests. It illustrates corrosion current density determination by Tafel extrapolation, potentiodynamic measurement of the polarization resistance, electrochemical impedance measurement, and potentiostatic deaeration. Tests combining corrosion and mechanical forces, such as fretting corrosion tests, environment-assisted cracking tests, and ion-leaching tests are also discussed.

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Miroslav Marek, 2012. "Corrosion Testing of Implantable Medical Devices", Materials for Medical Devices, Roger J. Narayan

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