Fatty Acids as Corrosion Inhibitors for Low Carbon Steel
Abstract
This research is to study the feasibility of two fatty acids, hexanoic acid (HA) and octanoic acid (OA),to be used as the corrosion inhibitors of low carbon steels in acid picking process. The concentrations of acids used in this work were 0, 1, 5 and 20 mM in 0.1 M H2SO4. The polarization curve showed that the corrosion potential (Ecorr) of carbon steel in H2SO4 contained OA shifted to negative (cathodic) direction. Thus, OA is a cathodic inhibitor controlling cathodic reaction chiefly. The corrosion rate also decreased with OA concentration. On the other hand, H2SO4 contained 20 mM HA showed a slightly shift of Ecorr to positive direction and reduce corrosion rate.In comparison with HA, OA at concentration of 20 mM exhibited highest inhibition efficiency (%IE) of 72.33% and lower corrosion rate of 88.95% when compared with the non-inhibitor condition. Keywords : Corrosion Inhibitor, Fatty Acid, Hexanoic Acid, Octanoic Acid, Low Carbon SteelReferences
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layers using the hydrophobic properties of carboxylic acids, Surface,and Coating Technology, 203(22),
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steel in acidic solutions. Journal of the Chilean Chemical Society, 60(1), 2786-2798.
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Springer.
Lin, B., & Zuo, Y. (2019). Corrosion inhibition of carboxylate inhibitors with different alkylene chain lengths on carbon steel in an alkaline solution. RSC Advances, 9(13), 7065-7077.
Malik, M.A., Hashim, M.A., Nabi, F., AL-Thabaiti, S.A.,& Khan, Z. (2011). Anti-corrosion ability of surfactants: A
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compounds in the salt form, Corrosion Science, 47, 33-35.
Sekunowo, O.I., Adeosun, S. O. & Lawal G. I. (2013). Potentiostaticpolarisation responses of mild steel in
seawater and acid environments, International Journal of Scientific & Technology Research, 2(10), 139-
145.
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ylideneamino) phenylimino)indolin-2-one.Industrial & Engineering Chemistry Research51(8),3215-
3223.
Tang, Z. (2019). A review of corrosion inhibitors for rust preventative fluids. Current Opinion in Solid State and Materials Science, 23(4), 100759.
Wang, S., Feng L., & Jiang, L. (2006). One-step solution-immersion process for fabrication of stable bionic
superhydrophobic surfaces, Advanced Materials, 18(6), 767-770.
Young G. P., Hu, Y. & Le, L. R. K. (2005). Nyskohus L dietary fibre and colorectal cancer: a model for
environment-gene interactions. Molecular Nutrition & Food Research, 49, 571-584.
Zaferani, S., Sharifi, M.,Zaarei, D. &Shishesaz, M. (2013). Application of eco-friendly products as corrosion inhibitors for metals in acid pickling processes – A review. Journal of Environmental Chemical Engineering. 1. 652–657.
Zarrouk, A., Zarrok H., Salghi, R., Hammouti, B., Bentiss, F., Touir, R., &Bouachrine, M. (2013).Evaluation of N-
containing organic compound as corrosion inhibitor for carbon steel in phosphoricacid, Journal
Materials and Environmental Science, 4(2), 177-192.
Žerjav, G., &Milošev, I. (2014). Carboxylic acids as corrosion inhibitors for Cu, Zn and brassesin simulated
urban rain, International Journal of Electrochemical Science, 9, 2696-2715.
Abdel-Gaber, A.M., Abd-El-Nabey, B. A., Sidahmed, I. M., El-Zayady, A. M., & Saadawy, M. (2006). Inhibitive action of some plant extracts on the corrosion of steel in acidic media. Corrosion Science, 48(9), 2765-2779.
Abdel-Gaber, A.M. & Khalil, N.N.,& El-Fetouh, A.A. (2003). The dissolution mechanism of steel in inorganic acids.
Anti-Corrosion Methods and Materials,50(6), 442-447.
Badea, G.L., & Radu, G.L. (2018). Introductory Chapter, Carboxylic Acids - Key Role in Life Sciences. (pp. 1-5).
London: IntechOpen.
Beermann, C., Jelinek, J., Reinecker, T., Hauenschild, A., Boehm, G., & Klor, H. U. (2003). Short-term effects of
dietary medium-chain fatty acids and n-3 long-chain polyunsaturated fattyacids on the fat metabolism of
healthy volunteers. Lipids in Health and Disease, 2, 1-10.
Boisier, G., Lamure, A., Pebere, N., Portail N., & Villatte, M. (2009). Corrosion protection of AA2024 sealed anodic
layers using the hydrophobic properties of carboxylic acids, Surface,and Coating Technology, 203(22),
3420-3426.
Bothi Raja, P., & Sethuraman, M.G. (2008). Inhibitive effect of black pepper extract on the sulphuric acid corrosion of mild steel. Materials Letters, 62(17), 2977-2979.
Brycki, B., Kowalczyk, I., Szulc, A., Kaczerewska, O., &Pakiet, M. (2018). Organic corrosion inhibitors, Corrosion
inhibitors, Principles and Recent Applications. Mahmood Aliofkhazraei: IntechOpen.
Govindasamy, R. & Ayappan, S. (2015). Study of corrosion inhibitor properties of novel semicarbazones on mild
steel in acidic solutions. Journal of the Chilean Chemical Society, 60(1), 2786-2798.
Hughes, A.E., Mol, J.M.C., Zheludkevich, M.L., &Buchheit, R.G. (2016). Active Protective Coatings. Dordrecht:
Springer.
Lin, B., & Zuo, Y. (2019). Corrosion inhibition of carboxylate inhibitors with different alkylene chain lengths on carbon steel in an alkaline solution. RSC Advances, 9(13), 7065-7077.
Malik, M.A., Hashim, M.A., Nabi, F., AL-Thabaiti, S.A.,& Khan, Z. (2011). Anti-corrosion ability of surfactants: A
Review. International Journal of Electrochemical Science, 6, 1927-1948.
Noor, E.A. (2005). The inhibition of mild steel corrosion in phosphoric acid solutions by some N-heterocyclic
compounds in the salt form, Corrosion Science, 47, 33-35.
Sekunowo, O.I., Adeosun, S. O. & Lawal G. I. (2013). Potentiostaticpolarisation responses of mild steel in
seawater and acid environments, International Journal of Scientific & Technology Research, 2(10), 139-
145.
Singh, A. K. (2012). Inhibition of mild steel corrosion in hydrochloric acid solution by 3-(4-((Z)-indolin-3-
ylideneamino) phenylimino)indolin-2-one.Industrial & Engineering Chemistry Research51(8),3215-
3223.
Tang, Z. (2019). A review of corrosion inhibitors for rust preventative fluids. Current Opinion in Solid State and Materials Science, 23(4), 100759.
Wang, S., Feng L., & Jiang, L. (2006). One-step solution-immersion process for fabrication of stable bionic
superhydrophobic surfaces, Advanced Materials, 18(6), 767-770.
Young G. P., Hu, Y. & Le, L. R. K. (2005). Nyskohus L dietary fibre and colorectal cancer: a model for
environment-gene interactions. Molecular Nutrition & Food Research, 49, 571-584.
Zaferani, S., Sharifi, M.,Zaarei, D. &Shishesaz, M. (2013). Application of eco-friendly products as corrosion inhibitors for metals in acid pickling processes – A review. Journal of Environmental Chemical Engineering. 1. 652–657.
Zarrouk, A., Zarrok H., Salghi, R., Hammouti, B., Bentiss, F., Touir, R., &Bouachrine, M. (2013).Evaluation of N-
containing organic compound as corrosion inhibitor for carbon steel in phosphoricacid, Journal
Materials and Environmental Science, 4(2), 177-192.
Žerjav, G., &Milošev, I. (2014). Carboxylic acids as corrosion inhibitors for Cu, Zn and brassesin simulated
urban rain, International Journal of Electrochemical Science, 9, 2696-2715.
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2022-05-30
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บทความวิจัย จากงานประชุมวิชาการระดับชาติ "วิทยาศาสตร์วิจัย ครั้งที่ 12"
