RT info:eu-repo/semantics/article
T1 Evaluation of the corrosion resistance of plasma nitrided austenitic stainless steel
A1 Souto, Ricardo Manuel
A1 Mareci, Daniel
A1 Strugaru, Sorin Iacob
A1 Munteanu, Corneliu
A1 Bolat, Georgiana
K1 Plasma nitriding
K1 304 austenitic stainless steel
K1 Corrosion
K1 SEM
K1 Electrochemical characterization
AB Plasma nitriding at 500 °C for 14 h was applied to austenitic 304 stainless steel for surface hardening. The effect of surface treatment on the corrosion resistance of the material was investigated in naturally-aerated 0.5 M NaCl solution for 30 days using linear potentiodynamic polarization and electrochemical impedance spectroscopy methods. Both as-cast and plasma nitrided stainless steel samples underwent spontaneous passivation, though the nitrided sample exhibited more positive zero current potential, higher breakdown potential, and lower anodic current densities than the as-cast material. Impedance spectra were interpreted in terms of a duplex passive film, corrosion resistance mainly arising from a thin inner compact layer, whereas the outer layer was more porous and less sealing. Capacitive behaviour and high corrosion resistance were observed in the low and medium frequency ranges for the nitrided samples
YR 2015
FD 2015
LK http://riull.ull.es/xmlui/handle/915/19068
UL http://riull.ull.es/xmlui/handle/915/19068
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 19-abr-2024