Analysis of the corrosion performance of binder jet additive manufactured magnesium alloys for biomedical applications

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Analysis of the corrosion performance of binder jet additive manufactured magnesium alloys for biomedical applications
Title:
Analysis of the corrosion performance of binder jet additive manufactured magnesium alloys for biomedical applications
Journal Title:
Journal of Magnesium and Alloys
Keywords:
Publication Date:
18 December 2021
Citation:
Kuah, K. X., Blackwood, D. J., Ong, W. K., Salehi, M., Seet, H. L., Nai, M. L. S., & Wijesinghe, S. (2022). Analysis of the corrosion performance of binder jet additive manufactured magnesium alloys for biomedical applications. Journal of Magnesium and Alloys, 10(5), 1296–1310. https://doi.org/10.1016/j.jma.2021.11.016
Abstract:
Binder jet printing (BJP) is a state-of-the-art additive manufacturing technique for producing porous magnesium structures. Porous Mg- Zn-Zr based BJP samples were assessed for corrosion performance in simulated body fluids by electrochemical and hydrogen evolution measurements. The corrosion rates of the BJP specimens were significantly higher than solid controls, even after accounting for their larger surface areas, suggesting that the BJP microstructure is detrimental to corrosion performance. X-ray computed tomography revealed nonuniform corrosion within the porous structure, with corrosion products forming on the pore walls. Impregnating the pores with hydroxyapatite or polymers greatly improved the corrosion resistance of the BJP samples.
License type:
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Funding Info:
This research / project is supported by the Agency for Science, Technology and Research - RIE2020 Advanced Manufacturing and Engineering (AME) Programmatic Grant - Structural Metal Alloys Programme
Grant Reference no. : A18B1b0061

This research / project is supported by the Agency for Science, Technology and Research - Singapore-Germany Academic-Industry (2 + 2) international collaboration grant
Grant Reference no. : A1890b0050
Description:
ISSN:
2213-9567