The Synergistic Effect Between Phosphonocarboxylic Acid Salts and Fatty Amines for the Corrosion Protection of a Carbon Steel

Ochoa, N.; Moran, F.; Pébère, N.
May 2004
Journal of Applied Electrochemistry;May2004, Vol. 34 Issue 5, p487
Academic Journal
This work was carried out to have a better understanding of the synergistic effect between phosphonocarboxylic acid salts (PCAS) and fatty amines (FA) for the corrosion protection of a carbon steel in a 200 mg l-1 NaCl solution. These compounds, combined with a biocide at low dosage, are used for water treatment in cooling circuits. First, electrochemical impedance measurements were performed to verify the inhibitive properties of the mixtures. Among the different concentrations tested, maximum efficiency was reached for the mixture containing 200 mg l-1 PCAS + 50 mg l-1 FA. Then, electrochemical measurements (current–voltage curves and impedance diagrams) were combined with surface analysis (X-ray photoelectron spectroscopy) for each compound at the optimized concentrations and for the mixture. In the presence of amines, the iron oxide/hydroxide layer remained porous and the inhibition efficiency was relatively low. The FA acted by repelling the water molecules from the interface. PCAS sealed the pores of the oxide layer by forming a chelate. Thus, the growth of the inhibitive layer was limited but the efficiency was higher than for the FA alone. For the optimized mixture, the formation of the chelate was enhanced and the protective properties of the layer improved. A competitive adsorption mechanism was proposed to account for the synergistic effect observed in the presence of both compounds.


Related Articles

  • On inhibition of hydrogen-sulfide corrosion of steels with quaternary ammonium salts. Kuznetsov, Yu. I.; Frolova, L. V.; Tomina, E. V. // Protection of Metals;May2006, Vol. 42 Issue 3, p215 

    The corrosion and electrochemical behavior of carbon steels in standard 0.5% chloride electrolytes acidified with CH3COOH and saturated with H2S was studied. The possibility of protecting steels with quaternary ammonium salts ( QASs) obtained by reactions of secondary and tertiary amines with...

  • Study of a cysteine derivative as a corrosion inhibitor for carbon steel in phosphoric acid solution. Zarrok, H.; Zarrouk, A.; Salghi, R.; Hammouti, B.; Elbakri, M.; Ebn Touhami, M.; Bentiss, F.; Oudda, H. // Research on Chemical Intermediates;Feb2014, Vol. 40 Issue 2, p801 

    Inhibition of corrosion of carbon steel in phosphoric acid solution by use of l-cysteine methyl ester hydrochloride has been investigated by measurement of weight loss and use of electrochemical methods. The efficiency of inhibition was increased by increasing the concentration of the inhibitor...

  • N-heterocyclic Amine Derivatives as Efficient Corrosion Inhibitors for Carbon Steel in Acidic Medium. Sabir, Syed; Alhazza, Mansour Ibrahim; Ibrahim, Ahmed Aidid; Al-Fatesh, Ahmed Sadeq // Journal of the Chemical Society of Pakistan;12/31/2015, Vol. 37 Issue 6, p1168 

    A novel heterocyclic amine derivatives, namely N, N'- substituted pyridinyl ethylene diamine tetra acetic acid sodium salt {A} and ethylene diamine N, N'-diacetic acid di (2-methylene tetra hydro furfuryl) acetate {B} were synthesized and their structure confirmations were performed by FTIR,...

  • CARBON STEEL CORROSION INHIBITION BY PLANT EXTRACT BASED GREEN INHIBITORS. Cojocaru, Anca; Maior, Ioana; Lingvay, Iosif; Lingvay, Carmen; Caprarescu, Simona; Vaireanu, Danut-Ionel // Studia Universitatis Babes-Bolyai, Chemia;2009 Special Issue 1, p42 

    The inhibition effect of several plant extracts on the corrosion of carbon steel in 0.5 M H2SO4 has been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). One has attempted to determine the corrosion characteristics in the absence and in the presence...

  • Effects of Water Soluble Rosin on the Corrosion Inhibition of Carbon Steel. Atta, Ayman M.; El-Mahdy, Gamal A.; Ismail, Husein S.; Al-Lohedan, Hamad A. // International Journal of Electrochemical Science;Dec2012, Vol. 7 Issue 12, p11834 

    New corrosion inhibitors, namely, rosin poly(oxyethylene) ester 4,5-dihydroimidazole maleate Adduct (RIMA-PEG), have been synthesized from rosin acid natural product. The chemical structure of the prepared RIMA-PEG was confirmed by FTIR analysis. The effectiveness of the synthesized compound as...

  • Effect of low-molecular carbon acids on atmospheric corrosion of metals. Mikhailov, A. // Protection of Metals & Physical Chemistry of Surfaces;Dec2009, Vol. 45 Issue 7, p757 

    A short review of studies on the atmospheric corrosion of metals in the presence of low-molecular carbon acids, as well as electrochemical studies aimed at elucidating the mechanism of acceleration of metal corrosion by low-molecular carbon acids are presented.

  • Ethylenediaminetetraacetic Acid-Zn2+ System as Corrosion Inhibitor for Carbon Steel in Sea Water. MANIVANNAN, M.; RAJENDRAN, S. // Asian Journal of Chemistry;2012, Vol. 24 Issue 10, p4713 

    The inhibition efficiency of ethylenediaminetetraacetic acid (EDTA) in controlling corrosion of carbon steel in sea water in absence and presence of Zn2+ has been evaluated by weight loss method. The formulation consisting of 250 ppm EDTA and 50 ppm Zn2+ has 96 % inhibition efficiency. It is...

  • The Inhibitive Effect Of Glutamic Acid On The Corrosion Of Carbon Steel In Sea Water. S. Gowri; J. Sathiyabama; S. Rajendran // International Journal of ChemTech Research;Jan-Mar2013, Vol. 5 Issue 1, p347 

    The inhibition efficiency of Glutamic acid (GA) - Zn2+ system in controlling corrosion of carbon steel in sea water has been evaluated by weight loss method. The formulation consisting of 200 ppm of Glutamic acid and 25 ppm of Zn2+ has 87% IE. A synergistic effect exists between Glutamic acid...

  • Corrosion inhibition investigations of 3-acetylpyridine semicarbazone on carbon steel in hydrochloric acid medium. Raphael, Vinod; Thomas, K.; Shaju, K.; Paul, Aby // Research on Chemical Intermediates;Oct2014, Vol. 40 Issue 8, p2689 

    The corrosion inhibition efficiency of 3-acetylpyridine-semicarbazide (3APSC) on carbon steel (CS) in 1.0 M HCl solution has been investigated using weight loss measurements, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization studies. The results show that inhibition...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics