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Journal of electroanalytical chemistry (Lausanne, Switzerland), 2021-02, Vol.882, p.115026, Article 115026
2021
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Details

Autor(en) / Beteiligte
Titel
Study on corrosion behavior and mechanism of CoCrFeMnNi HEA interfered by AC current in simulated alkaline soil environment
Ist Teil von
  • Journal of electroanalytical chemistry (Lausanne, Switzerland), 2021-02, Vol.882, p.115026, Article 115026
Ort / Verlag
Amsterdam: Elsevier B.V
Erscheinungsjahr
2021
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
  • The corrosion behavior and mechanism of CoCrFeMnNi HEA interfered by AC current was investigated in carbonate/bicarbonate solution. AC application can destroy the structure of passive film, generate a change in the content of constitutes, and decrease the stability and protective ability of passive film, especially at higher iAC. With increasing iAC, the corrosion form of HEA is evolved from pitting corrosion occurred at low iAC to intergranular corrosion generated at high iAC. At the interference of 200 A/m2, more H atoms are distributed at grain boundaries and interior of grains, resulting in the occurrence of severe corrosion. Moreover, the selective dissolution of Co/Mn occurs in the interior of corroded grains of HEA sample. However, selective dissolution of Fe, Co and Cr is occurred at pits and grain boundaries. [Display omitted] •AC corrosion behavior of CoCrFeMnNi HEA was investigated in CO32−/HCO3− solution.•AC application damaged the structure of passive film, and changed its composition.•An increased iAC reduced the stability and protective ability of passive film.•Corrosion form of the HEA was evolved from pitting corrosion to intergranular corrosion.•Selective dissolution of Fe, Co and Cr was occurred at pit and grain boundary.
Sprache
Englisch
Identifikatoren
ISSN: 1572-6657
eISSN: 1873-2569
DOI: 10.1016/j.jelechem.2021.115026
Titel-ID: cdi_proquest_journals_2537700654

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