TY - JOUR
T1 - Study of the anticorrosive properties of different bi-Layers of polypyrrole - BTSE on carbon steel immersed in NaCl media
AU - Correa-Borroel, A. L.
AU - Gutierrez, S.
AU - Arce Estrada, E.
AU - Cabrera-Sierra, R.
AU - Herrasti, P.
PY - 2010/5/18
Y1 - 2010/5/18
N2 - To improve the corrosion resistance of mild steel, in this work, bi-layers of BTSE (bis-(triethoxysilyl) ethane) and Ppy coatings have been deposited via adsorption and electrodeposition, respectively. The anticorrosive properties of these bi-layers have been evaluated in an aggressive medium like 3% NaCl, and compared with the layers of BTSE and Ppy in a separate way. In spite of the aggressive solution, it was evaluated a poor behaviour of both Ppy and BTSE coatings using potential measurements, EIS and SEM techniques. A better behaviour was expected because the preparation of the bilayers Ppy/BTSE and BTSE/Ppy showed a protective behaviour using SEM and salt spray tests. However, EIS results predicted an evolution of these coatings for long immersion times being evident the oxidation of the steel.
AB - To improve the corrosion resistance of mild steel, in this work, bi-layers of BTSE (bis-(triethoxysilyl) ethane) and Ppy coatings have been deposited via adsorption and electrodeposition, respectively. The anticorrosive properties of these bi-layers have been evaluated in an aggressive medium like 3% NaCl, and compared with the layers of BTSE and Ppy in a separate way. In spite of the aggressive solution, it was evaluated a poor behaviour of both Ppy and BTSE coatings using potential measurements, EIS and SEM techniques. A better behaviour was expected because the preparation of the bilayers Ppy/BTSE and BTSE/Ppy showed a protective behaviour using SEM and salt spray tests. However, EIS results predicted an evolution of these coatings for long immersion times being evident the oxidation of the steel.
KW - Bi-layers
KW - Corrosion
KW - Impedance
KW - Organosilane
KW - Polypyrrole
UR - http://www.scopus.com/inward/record.url?scp=77952941888&partnerID=8YFLogxK
U2 - 10.4152/pea.201002113
DO - 10.4152/pea.201002113
M3 - Artículo
SN - 0872-1904
VL - 28
SP - 113
EP - 123
JO - Portugaliae Electrochimica Acta
JF - Portugaliae Electrochimica Acta
IS - 2
ER -