Browsing by Author "Kantonen T."

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    Corrosion behavior of laser powder bed fusion manufactured nickel-free stainless steels in high-temperature water
    (2024-10-01) Goel S.; Bojinov M.; Capek J.; Saario T.; Polatidis E.; Kantonen T.; Salminen A.; Blankenburg M.; Ganvir A.; Que Z.
    The paper presents a comprehensive investigation of electrochemical behavior of laser powder bed fusion (PBF-LB/M) nickel-free stainless steels in high-temperature water. The PBF-LB/M nickel-free steels processed with various laser parameters and heat treatments exhibit tunable microstructures. Electrochemical impedance spectroscopy (EIS) indicates a 2–3 times lower oxidation rate for the nickel-free steels compared to wrought 316 L. The outer layer crystallites on nickel-free steels are close to pure Fe oxides. The significantly lower concentration of Ni in the inner oxide and at the alloy/oxide interface account for the important variations of the parameters of water reduction/hydrogen oxidation reactions than wrought 316 L.