Electrochemical investigation of super duplex stainless steel cladded carbon steel manufactured via powder bed selective laser melting

摘要

This study aims to investigate the electrochemical and corrosion properties of super duplex stainless steel (SDSS) cladded low carbon steel (LCS) manufactured using powder bed fusion selective laser melting (PBF-SLM) technique in 3.56 wt.% NaCI aqueous solution. The PBF-SLM technique involves spreading of a thin layer of SDSS powder on a LCS substrate followed by localized melting with Yb - fiber laser. Crucial parameters of the PB-SLM process such as laser power, laser-scanning speed, and layer thickness were optimized and fine-tuned to achieve the best possible bonding between the clad material and the substrate. Electrochemical and corrosion properties were tested via. Open circuit potential (OCP) monitoring, electrochemical impedance spectroscopy (EIS), and cyclic polarization (CP) in the said electrolyte.