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An in situ FT‐IR evaluation of candidate organic corrosion inhibitors for carbon steel in contact with alkaline aqueous solutions
Author(s) -
Bozzini B.,
Mele C.,
Romanello V.
Publication year - 2007
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.200604015
Subject(s) - triethylenetetramine , aqueous solution , carbon steel , fourier transform infrared spectroscopy , chemistry , inorganic chemistry , corrosion , electrolyte , tartrate , infrared spectroscopy , sodium hydroxide , electrochemistry , materials science , nuclear chemistry , electrode , chemical engineering , organic chemistry , engineering
The influence of some organic additives on the anodic behaviour of a carbon steel electrode in contact with alkaline aqueous solutions was studied by in situ Fourier transform infrared (FT‐IR) spectroscopy. FT‐IR spectroscopy allows to obtain information at the molecular level regarding the metal‐electrolyte interface. The following molecules have been considered: (i) benzyldimethylphenylammonium chloride (BDMPAC), (ii) glutamic acid, (iii) triethylenetetramine (TETA), (iv) sodium tartrate and (v) sodium benzoate. Potential‐dependent spectra have been recorded for the different investigated systems. Quantitative information about the formation kinetics of corrosion products was derived by numerical analysis of the peak area as a function of the applied potential for the different systems investigated.