Kuah, K. X., Salehi, M., Ong, W. K., Seet, H. L., Nai, M. L. S., Wijesinghe, S., & Blackwood, D. J. (2022). Insights into the influence of oxide inclusions on corrosion performance of additive manufactured magnesium alloys. Npj Materials Degradation, 6(1). https://doi.org/10.1038/s41529-022-00244-2
Abstract:
The corrosion performance of binder jet additive samples is compared with cast samples through potentiodynamic polarization in Na2SO4 solution. Higher zinc levels in the magnesium matrix and the presence of MgO within the microstructure of the binder jet printed alloy contribute to increases in the anodic and cathodic kinetics, respectively. It is proposed that electron inhomogeneity at the Mg/MgO interface in the binder jet printed alloy is the source of the catalytic activity of the hydrogen evolution reaction. The removal of MgO inclusions suppressed the cathodic reaction relative to the large increase in kinetics seen in similarly treated cast samples.
License type:
Attribution 4.0 International (CC BY 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