Passivation potential

{
  "id": "MLC-T-CHM-008528",
  "term": "Passivation potential",
  "field": "Chemistry",
  "definition": "The most negative electrode potential at which a metal or alloy transitions from an active corrosion state to a passive state, where a protective film forms and significantly reduces the corrosion rate. This potential corresponds to the peak current density in the active-passive region of a potentiodynamic polarization curve. Potentials more positive than this value result in the formation and maintenance of the passive layer.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "corrosion",
    "corrosion rate",
    "electrode potential",
    "film",
    "passive state"
  ],
  "references": [
    "PAC, 1989, 61, 19. 'Electrochemical corrosion nomenclature (Recommendations 1988)' on page 21 (https://doi.org/10.1351/pac198961010019)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/passivation-potential/"
}