Prediction of the Crevice Corrosion Incubation Period of Passive Metals at Elevated Temperatures: Part II — Model Verification and Simulation

Authors

  • Kevin L. Heppner,

    1. Department of Chemical Engineering, Research Annex, 105 Maintenance Road, University of Saskatchewan, Saskatoon, SK S7N 5C5, Canada
    Search for more papers by this author
  • Richard W. Evitts,

    Corresponding author
    1. Department of Chemical Engineering, Research Annex, 105 Maintenance Road, University of Saskatchewan, Saskatoon, SK S7N 5C5, Canada
    • Department of Chemical Engineering, Research Annex, 105 Maintenance Road, University of Saskatchewan, Saskatoon, SK S7N 5C5, Canada
    Search for more papers by this author
  • John Postlethwaite

    1. Department of Chemical Engineering, Research Annex, 105 Maintenance Road, University of Saskatchewan, Saskatoon, SK S7N 5C5, Canada
    Search for more papers by this author

Abstract

A flexible computational model for the initiation of crevice corrosion has been developed. Based upon a mechanistic theory, empiricisms do not limit the scope of this work. The model is formulated in a previous paper and this sequel publication showcases the performance of the algorithm. Designed for widespread applicability, passive crevice corrosion of metals may be modelled in suitable electrolytes. The initiation of crevice corrosion has been simulated for several passive metals. Reaffirming past observations, higher temperatures are predicted detrimental to the passivity of metals. The predictions are compared with the experimental work of others and excellent agreement is seen between the simulated chemical composition of the crevice solution and experimental reality.

Abstract

On a mis au point un modèle de calcul flexible pour le commencement de la corrosion fissurante. Grâce à une théorie mécanistique, les empirismes ne limitent pas la portée du travail. Le modèle a été formulé dans un article antérieur et la présente publication montre la performance de l'algorithme. Dans ce modèle conçu pour des applications très élargies, la corrosion fissurante passive des métaux peut être modélisée dans des électrolytes adéquates. Le commencement de la corrosion est simulé pour différents métaux passifs. Corroborant des observations passées, les températures élevées sont prédites qui sont détrimentales pour la passivité des métaux. Les prédictions sont comparées au travail expérimental d'autres chercheurs et un excellent accord est trouvé entre la composition chimique simulée de la solution fissurante et la réalité expérimentale.

Ancillary