Electropolishing of Additively Manufactured Ti-6Al-4V Surfaces in Nontoxic Electrolyte Solution

The reduction of surface roughness on additively manufactured components has become a critical factor in engineering applications. This paper reports the electropolishing Ti-6Al-4V by powder bed selective laser melting (SLM) using nontoxic electrolyte solution. results have shown that salt-based can be used to electropolish titanium alloys. waviness as-built alloy was reduced five times average specimen. minimum obtained 9.52 μm. specimens were characterized scanning electron microscope, Gwyddion software, and electrochemical impedance spectroscopy (EIS) evaluate morphology, profile, charge transfer resistance. X-ray photon (XPS) diffraction (XRD) characterize chemistry XPS XRD showed TiO2 as significant component Ti-6Al-4V, atomic percentage increased after electropolishing. In addition, EIS data indicated high resistance electropolished specimen, which shows growth formation oxide layer.