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Corrosion inhibition of high strength maraging steel by cerium(III) ions in sulfuric acid solution
Author(s) -
Rosalbino F.,
Scavino G.
Publication year - 2015
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201508378
Subject(s) - sulfuric acid , corrosion , maraging steel , dielectric spectroscopy , cerium , materials science , polarization (electrochemistry) , metallurgy , electrochemistry , inorganic chemistry , ion , chemistry , electrode , organic chemistry
The influence of rare earth Ce(III) ions on the corrosion behaviour of high strength maraging steel in 0.5 M sulfuric acid solution was studied by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. Ce 3+ can significantly reduce corrosion deterioration up to 5.0 mM. Beyond that level the corrosion rate increases till a steady value. High corrosion protection of steel surface after exposure to the acidic solution containing the optimal Ce(III) concentration is revealed by SEM investigations.