Premium
Corrosion Protection Efficiency of Bilayer Porphyrin‐Polyaniline Film Deposited on Carbon Steel
Author(s) -
Popa Iuliana,
FagadarCosma Eugenia,
Taranu BogdanOvidiu,
Birdeanu Mihaela,
FagadarCosma Gheorghe,
Taranu Ioan
Publication year - 2015
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201400137
Subject(s) - polyaniline , corrosion , materials science , carbon steel , porphyrin , electrochemistry , adsorption , composite number , composite material , metallurgy , electrode , polymer , organic chemistry , chemistry , polymerization
Summary Polyaniline (PANI) based composites and multilayers as well as porphyrin derivatives have been previously reported as efficient anti‐corrosion coatings. In our studies, 5,10,15,20‐tetra(4‐methylphenyl)‐21H,23H‐porphyrin (TMP) was adsorbed on carbon steel surface before PANI electrodeposition, in order to improve the corrosion protection of PANI films on steel. The corrosion behavior of the TMP‐PANI bilayer carbon steel modified electrodes was investigated in 0.1 M H 2 SO 4 solution using electrochemical tehniques. It was found that TMP‐PANI coatings can provide a good protection against carbon steel corrosion. The corrosion rate for the composite coated steel was significantly lower than that of the bare steel, and exhibited an inhibition efficiency of ∼80%.