Inhibition of Aluminum Alloy 2024 Corrosion by 4-Amino-5-Phenyl-4H-1, 2, 4-Trizole-3-Thiol in Highly Sulfuric Acid Solution

Abstract:

Electrochemical polarization and electrochemical impedance spectroscopy (EIS) were involved to study the corrosion inhibition of aluminum alloy 2024 in 2.5M H2SO4 solution by 4-amino-5-phenyl-4H-1, 2, 4-triazole-3-thiol (APTT) at 30 ○C. Potentiodynamic polarization results were comparable with those obtained by impedance measurements. Results showed that APTT performed as inhibitor for aluminum alloy 2024 corrosion in 2.5M H2SO4 solution and it attains an efficiency of more than 32% at 4×10- 4 M at 30 ○C . The inhibition efficiency increases with an increase in the concentration of APTT. Polarization curves show that APTT is a mix-type inhibitor. Changes in impedance parameters (charge transfer resistance, Rct, and double layer capacitance, Cdl) were indicative of adsorption of APTT on the aluminum alloy 2024 surface, leading to the formation of protective films

• Periodical: Advanced Materials Research (Volumes 93-94)
• Pages: 354-357
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.93-94.354
• Online since: January 2010
• Authors: Ahmed Y. Musa, Abu Bakar Mohamad, Abdul Amir H. Kadhum, Mohd Sobri Takriff, Abdul Razak Daud, Siti Kartom Kamarudin
• Keywords: Acid Corrosion, Aluminium Alloy, Corrosion Inhibition

References

[1] E.A. Noor: Mater. Chem. Phys Vol. 114, (2009), p.533.

[2] A. Y. Musa, A. A. H. Kadhum, A. B. Mohamad, M. S. Takriff, A. R. Daud and S. K. Kamarudin, in : A comparative study of the corrosion inhibition of mild steel in sulphuric acid by 4, 4-dimethyloxazolidine- 2-thione, Corros. Sci. (2009).

DOI: 10.1016/j.corsci.2009.06.024

[3] A. Y. Musa, A. A. H. Kadhum, M. S. Takriff, A. R. Daud, S. K. Kamarudin and N. Muhamad, in: Corrosion inhibitive Property of 4-Amino-5-Phenyl-4H-1, 2, 4-Trizole-3-Thiol for Mild Steel Corrosion in 1. 0M Hydrochloric Acid, Corros. Eng. Sci. Tech. (2009).

DOI: 10.1179/147842208x386359

[4] A. Y. Musa , A. A. Khadom, A. A. H. Kadhum, A. B. Mohamad and M. S. Takriff, in: Kinetic behavior of mild steel corrosion inhibition by 4-amino-5-phenyl-4H-1, 2, 4- trizole-3-thiol, J. Taiwan Inst. Chem. Eng. (2009).

DOI: 10.1016/j.jtice.2009.08.002

[5] J. Bessone, C. Mayer, K. Juttner and W. Lorenz: Electrochim. Acta Vol 28 (1983), p.171.

[6] H.J. de Wit, C. Wijenberge and C. Crevecoeur: J. Electrochem. Soc. Vol 126 (1979), p.779.

[7] H.J.W. Lenderink, M.V.D. Linden and H.J. de Wit: Electrochim. Acta Vol 38 (1993), p. (1989).

[8] J.B. Bessone, D.R. Salinas, C. Mayer, M. Ebert and W.J. Lorenz: Electrochim. Acta Vol 37 (1992), p.2283.

[9] M. Metikoš-Huković, R. Babić and Z. Grubac: J. Appl. Electrochem. Vol 28 (1998), p.433. 0 20 40 60 80 100 0 50 100 150 200 Zim, ohm. cm2 Zre, ohm. cm2 Blank a b c d e.