Corrosion fatigue behavior of additively manufactured biodegradable porous iron

Journal article (2019)

Authors

Y. Li Biomaterials & Tissue Biomechanics - Mechanical, Maritime and Materials Engineering
Karel Lietaert Katholieke Universiteit Leuven, 3D Systems – LayerWise NV
W. Li (OLD) MSE-3
X. Y. Zhang Tsinghua University
M.A. Leeflang Biomaterials & Tissue Biomechanics - Mechanical, Maritime and Materials Engineering
J. Zhou Biomaterials & Tissue Biomechanics - Mechanical, Maritime and Materials Engineering
A.A. Zadpoor Biomaterials & Tissue Biomechanics - Mechanical, Maritime and Materials Engineering
Research Group
Biomaterials & Tissue Biomechanics (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2019 Y. Li, K. Lietaert, W. Li, X.Y. Zhang, M.A. Leeflang, J. Zhou, A.A. Zadpoor
DOI: https://doi.org/10.1016/j.corsci.2019.05.003
More Info
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Published Date

2019

Language

English

Faculty

Mechanical, Maritime and Materials Engineering

Department

Biomechanical Engineering

Research Group

Biomaterials & Tissue Biomechanics

Abstract

The corrosion fatigue behavior of additively manufactured topologically ordered porous iron based on diamond unit cells was studied for the first time to understand its response to cyclic loading in a simulated physiological environment. The material exhibited high fatigue resistance with fatigue strengths being 70% and 65% of yield stress in air and revised simulated body fluid, respectively, mainly due to its slow degradation and excellent ductility. However, cyclic loading significantly increased biodegradation rate, especially at higher stress levels. The observed extraordinary fatigue strength, slow biodegradation and high ductility underline the importance of porous iron as a promising bone-substituting material.

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