TY - JOUR
T1 - Corrosion performance of carbon steel in N-doped mesoporous carbon spheres (NMCS)-containing alkaline medium in presence of chloride
AU - Mahmoud, H.
PY - 2019
Y1 - 2019
N2 - The electrochemical response of carbon steel in chloride-free or chloride-containing 0.1 M and 0.9 M NaOH, in the presence of 0.016 wt.% NMCS, is the subject of this work. The NMCS exhibited a negative (in 0.1 M NaOH) and positive (in 0.9 M NaOH) zeta-potential. This determined altered steel electrochemical response, improved overall, especially in chloride-containing 0.9 M NaOH. The effect was related to an enhanced Fe3+ contribution in the passive film, when NMCS were present. The improved corrosion resistance was also attributable to a NMCS-triggered competition of OH− vs. Cl− ions in the medium, in other words, NMCS interference to promote passive layer stability.
AB - The electrochemical response of carbon steel in chloride-free or chloride-containing 0.1 M and 0.9 M NaOH, in the presence of 0.016 wt.% NMCS, is the subject of this work. The NMCS exhibited a negative (in 0.1 M NaOH) and positive (in 0.9 M NaOH) zeta-potential. This determined altered steel electrochemical response, improved overall, especially in chloride-containing 0.9 M NaOH. The effect was related to an enhanced Fe3+ contribution in the passive film, when NMCS were present. The improved corrosion resistance was also attributable to a NMCS-triggered competition of OH− vs. Cl− ions in the medium, in other words, NMCS interference to promote passive layer stability.
KW - Corrosion
KW - CV
KW - N-doped MCSs
KW - Steel passivity
KW - Zeta potential
UR - http://www.scopus.com/inward/record.url?scp=85073032157&partnerID=8YFLogxK
U2 - 10.1016/j.mtcomm.2019.100677
DO - 10.1016/j.mtcomm.2019.100677
M3 - Article
AN - SCOPUS:85073032157
SN - 2352-4928
VL - 21
SP - 1
EP - 17
JO - Materials Today Communications
JF - Materials Today Communications
M1 - 100677
ER -