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- W4282936699 abstract "Though the laser powder bed fusion (LPBF) additive manufacturing (AM) AlSi10Mg alloy (LPBF AlSi10Mg) has been utilized for weldability and fatigue resistant property, its high surface roughness limits widespread application. Here, we report the surface roughness reduction of the LPBF AlSi10Mg via electrochemical polishing (ECP). A novel viscous layer formation mechanism is found on LPBF AlSi10Mg surface during the ECP process. An environmentally friendly NaOH based electrolyte was utilized to passivate the LPBF AlSi10Mg surface, resulting in successful ECP of the LPBF AlSi10Mg. Furthermore, the Si phase and its reaction products with electrolyte formed on the polishing surface were found to be a barrier for improving the surface quality of LPBF AlSi10Mg. Therefore, an intermittent removal of the polishing products on AlSi10Mg further improves the polishing effect, i.e., an intermittent electrochemical polishing (IECP) method was utilized to improve the polishing quality of LPBF AlSi10Mg. The surface roughness (Sa) is reduced by 87.7 %, and the corrosion current density (icorr) is decreased by 17 folds. The significantly improved polishing effect of IECP is dominated by removing ECP products constantly to enhance dissolution of Al element in AlSi10Mg and fluent dispersion of electrolyte and Al3+ in the metal-electrolyte interface." @default.
- W4282936699 created "2022-06-16" @default.
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- W4282936699 date "2022-08-01" @default.
- W4282936699 modified "2023-10-15" @default.
- W4282936699 title "High-quality surface smoothening of laser powder bed fusion additive manufacturing AlSi10Mg via intermittent electrochemical polishing" @default.
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- W4282936699 doi "https://doi.org/10.1016/j.surfcoat.2022.128608" @default.
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