Corrosion fatigue behavior of additively manufactured biodegradable porous iron

Li, Y.; Lietaert, K.; Li, W.; Zhang, X.Y.; Leeflang, M.A.; Zhou, J.; Zadpoor, A.A.

doi:10.1016/j.corsci.2019.05.003

Corrosion fatigue behavior of additively manufactured biodegradable porous iron

Title

Corrosion fatigue behavior of additively manufactured biodegradable porous iron

Author

Li, Y. (TU Delft Biomaterials & Tissue Biomechanics)
Lietaert, K. (Katholieke Universiteit Leuven; 3D Systems – LayerWise NV)
Li, W. (TU Delft (OLD) MSE-3)
Zhang, X.Y. (Tsinghua University)
Leeflang, M.A. (TU Delft Biomaterials & Tissue Biomechanics)
Zhou, J. (TU Delft Biomaterials & Tissue Biomechanics)
Zadpoor, A.A. (TU Delft Biomaterials & Tissue Biomechanics)

Date

2019

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.

Subject

Additive manufacturing
Biodegradation
Corrosion fatigue
Iron scaffold
Selective laser melting

To reference this document use:

http://resolver.tudelft.nl/uuid:1e17d267-5896-4c62-bb11-da2b80c97978

DOI

https://doi.org/10.1016/j.corsci.2019.05.003

Embargo date

2021-06-05

ISSN

0010-938X

Source

Corrosion Science: the journal on environmental degradation of materials and its control, 156, 106-116