TY - JOUR
T1 - Electrochemical evaluation of corrosion on borided and non-borided steels immersed in 1 M HCl Solution
AU - Mejía-Caballero, I.
AU - Martínez-Trinidad, J.
AU - Palomar-Pardavé, M.
AU - Romero-Romo, M.
AU - Herrera-Hernández, H.
AU - Herrera-Soria, O.
AU - Campos Silva, I.
N1 - Funding Information:
This work was supported by Research Grant 150556 of the National Council of Science and Technology, and Research Grant 20130534 of the Instituto Politécnico Nacional in Mexico. The authors wish to thank the Centro Nacional de Metrología for their cooperation. M.P-P. and M.R-R. would like to thank SNI for the distinction of their membership and the stipend received.
PY - 2014/8
Y1 - 2014/8
N2 - In this study the corrosion resistances of AISI 1018 and AISI 304 borided and non-borided steels were estimated using polarization resistance and electrochemical impedance spectroscopy (EIS) techniques. Boriding of the steel samples was conducted using the powder-pack method at 1223 K with 6 h of exposure. Structural examinations of the surfaces of the borided steels showed the presence of a Fe2B layer with isolated FeB teeth on the AISI 1018 steel, whereas a compact layer of FeB/Fe2B was formed on the AISI 304 steel. Polarization resistance and EIS of the borided and non-borided steels surfaces were performed in a corrosive solution of 1 M HCl. The EIS data were analyzed during 43 days of exposure to the acid solution. Impedance curves obtained during this period for the borided and non-borided steels were modeled using equivalent electrical circuits. The results of both electrochemical techniques indicated that boride layers formed at the steel surfaces effectively protect the samples from the corrosive effects of HCl. The main corrosion processes observed on the boride layers were pitting and crevice corrosion.
AB - In this study the corrosion resistances of AISI 1018 and AISI 304 borided and non-borided steels were estimated using polarization resistance and electrochemical impedance spectroscopy (EIS) techniques. Boriding of the steel samples was conducted using the powder-pack method at 1223 K with 6 h of exposure. Structural examinations of the surfaces of the borided steels showed the presence of a Fe2B layer with isolated FeB teeth on the AISI 1018 steel, whereas a compact layer of FeB/Fe2B was formed on the AISI 304 steel. Polarization resistance and EIS of the borided and non-borided steels surfaces were performed in a corrosive solution of 1 M HCl. The EIS data were analyzed during 43 days of exposure to the acid solution. Impedance curves obtained during this period for the borided and non-borided steels were modeled using equivalent electrical circuits. The results of both electrochemical techniques indicated that boride layers formed at the steel surfaces effectively protect the samples from the corrosive effects of HCl. The main corrosion processes observed on the boride layers were pitting and crevice corrosion.
KW - EIS technique
KW - borided steels
KW - boriding
KW - corrosion mechanism
KW - polarization resistance
UR - http://www.scopus.com/inward/record.url?scp=84906310637&partnerID=8YFLogxK
U2 - 10.1007/s11665-014-1039-z
DO - 10.1007/s11665-014-1039-z
M3 - Artículo
SN - 1059-9495
VL - 23
SP - 2809
EP - 2818
JO - Journal of Materials Engineering and Performance
JF - Journal of Materials Engineering and Performance
IS - 8
ER -