Impedance analysis of film-forming amines for the corrosion protection of a carbon steel

被引：73

作者：

Baux, Jordan ^{[1
,2
]}

Causse, Nicolas ^{[1
]}

Esvan, Jerome ^{[1
]}

Delaunay, Sophie ^{[2
]}

Tireau, Jonathan ^{[2
]}

Roy, Marion ^{[3
]}

You, Dominique ^{[3
]}

Pebere, Nadine ^{[1
]}

机构：

[1] Univ Toulouse, CIRIMAT, ENSIACET, UPS,INPT,CNRS, 4 Allee Emile Monso, F-31030 Toulouse 4, France

[2] EDF R&D, MMC, Chem & Corros Grp, Ave Renardieres, F-77818 Moret Sur Loing, France

[3] Univ Paris Saclay, CEA, DEN, SECR, F-91191 Gif Sur Yvette, France

来源：

ELECTROCHIMICA ACTA | 2018年 / 283卷

关键词：

Organic inhibitor; Electrochemical impedance spectroscopy; Resistivity distribution; X-ray photoelectron spectroscopy; Inhibitive efficiency; SELF-ASSEMBLED MONOLAYERS; CONSTANT-PHASE-ELEMENT; ATOMIC-FORCE MICROSCOPY; 1018; MILD-STEEL; RESISTIVITY DISTRIBUTIONS; IRON SAMPLES; XPS SPECTRA; OCTADECYLAMINE; BEHAVIOR; THICKNESS;

D O I：

10.1016/j.electacta.2018.06.189

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Octadecylamine (ODA) is a well-known organic inhibitor for the corrosion protection of carbon steels. In the present study, electrochemical impedance data analysis was performed to extract physical parameters of the ODA thin film that formed on a P275 carbon steel surface. First, surface observations and contact angle measurements showed the steel surface modification after the ODA treatment linked to the adsorption of an organic hydrophobic thin film. X-ray photoelectron spectroscopy confirmed the presence of a very thin organic layer and revealed the presence of iron oxide/hydroxide underlying the ODA film. The impedance data analysis with a power-law distribution of resistivity in the organic film allowed the permittivity and thickness to be extracted. Finally, from the impedance results with and without ODA, the instantaneous corrosion inhibition efficiency was determined. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：699 / 707

页数：9

共 56 条

[1] Solvent-free one-step covalent functionalization of graphene oxide and nanodiamond with amines [J].