Hsu K.-MChen S.-HCHAO-SUNG LIN2022-03-222022-03-2220210010938Xhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85110292950&doi=10.1016%2fj.corsci.2021.109694&partnerID=40&md5=9c7aa505af517466ff1bc14c54562d97https://scholars.lib.ntu.edu.tw/handle/123456789/598338The effect of Mn on the passivation behavior of FeCrNiCoMn high entropy alloy was elucidated in detail via anodic polarization of FeCrNiCoMnx (x = 1.0, 0.6, 0.3, 0) in 0.5 M H2SO4. A decrease in Mn content reduced Mn-related oxide/sulfide inclusions and elevated the Cr2O3 content in the passive film, conferring better corrosion resistance of FeCrNiCoMnx. The XPS results revealed a competitive oxidation of Mn with Cr, which lowered the Cr2O3 content in the passive film. This leads to inferior corrosion resistances of FeCrNiCoMn, FeCrNiCoMn0.6, and an equivalent resistance of FeCrNiCoMn0.3, compared to 304 L stainless steel. ? 2021 Elsevier LtdA. High entropy alloysA. Stainless steelB. Anodic polarizationB. EISB. XPSC. Passive filmChromium alloysCobalt alloysCorrosion resistanceCorrosion resistant alloysCorrosive effectsElectrochemical corrosionEntropyHigh-entropy alloysManganese alloysA high entropy alloyA stainless steelB anodic polarizationB EISB XPSC passive filmCorrosion behaviourEffect of MnHigh entropy alloysPassive filmsX ray photoelectron spectroscopyjournal article10.1016/j.corsci.2021.1096942-s2.0-85110292950