RT info:eu-repo/semantics/article
T1 Modification of the corrosion response of steel substrates by ion-nitriding
A1 Souto, Ricardo Manuel
A1 Alanyali, Hasan
A1 Rodríguez Raposo, Raquel
A1 Fernández-Mérida, Luis
A1 González, Sergio
A2 Química
A2 Grupo de Electroquímica y Corrosión
Departamento de Química
Instituto de Materiales y Nanotecnología
K1 Corrosion
K1 ion nitriding
K1 thin inorganic coatings
K1 steels
K1 electrochemical impedance spectroscopy
AB This paper concentrates on the electrochemical behaviour of ion-nitrided coatings produced by cathodic arc plasma deposition. The corrosion of five different steel grades modified by ion-nitriding was investigated through electrochemical polarization and electrochemical impedance spectroscopy techniques in immersion tests performed in a 0.5 M NaCl solution. Ion-nitrided and bare steel substrates were employed. Enhanced corrosion resistance is found for the coated steels. A porous film is produced on the metallic substrates, which allows for electrochemical reactive areas to be developed inside the pores. Surface film breakdown results in the localised corrosion of the materials at potentials positive to the corresponding pitting potential values for each material in the testing solution
YR 2013
FD 2013
LK http://riull.ull.es/xmlui/handle/915/19022
UL http://riull.ull.es/xmlui/handle/915/19022
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 27-dic-2024