Abstract
2-(N,N-dimethylamino) benzylidene imino-4-(4-methyl phenyl)-1,3-thiazole (DIMPT), 2-benzylidene imino-4-(4-methyl phenyl)-1,3-thiazole (BIMPT), 2-salicylidene imino-4-(4-methyl phenyl)-1,3-thiazole (SIMPT) and 2-cinnamylidene imino-4-(4-methyl phenyl)-1,3-thiazole (CIMPT) were synthesized in the laboratory and their influence on the inhibition of corrosion of mild steel in 20 formic acid and 20 acetic acid was investigated by weight loss and potentiodynamic polarization techniques. The inhibition efficiency of these compounds was found to vary with their nature and concentration, temperature, immersion time and acid concentration. The values of activation energy and free energy of adsorption of the thiazoles were calculated to investigate the mechanism of corrosion inhibition. The adsorption of all the thiazoles on mild steel surface was found to obey Langmuir adsorption isotherm. The potentiodynamic polarization result revealed that the compounds studied are mixed type inhibitors. Electrochemical impedance spectroscopy was used to investigate the mechanism of corrosion inhibition.
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References
I.A. Sekine A. Masuko K. Senoo (1987) Corros. Sci. 43 553
M.A. Quraishi D. Jamal (2000) Corrosion 56 156
V.B. Singh R.N. Singh (1995) Corros. Sci. 37 1399
I. Sekine S. Hatakeyama Y. Nakazawa (1987) Corros. Sci. 27 275
E. Heitz (Eds) (1974) ‘Corrosion of Metals in Organic Solvents’ Plenum Press New York, NY 226
I. Sekine H. Ohkawa T. Hank (1982) Corros. Sci. 22 1113
I. Sekine A. Chinda (1984) Corrosion 40 95
M.M. Singh A. Gupta (1996) Mat. Chem. Phy. 46 15
S. Muralidharan S.V.K. Iyer (1997) Anti-Corros. Met. Mater. 44 100
M.A. Quraishi M.A.W. Khan M. Ajmal (1996) Anti-Corros. Met. Mater. 43 5
B. Hammouti A. Aouniti M. Taleb M. Bright S. Kertit (1995) Corrosion 51 411
E. N. Al-Andis A. Khamis H. Al-.Mayouf Aboul-Enein (1995) Corros. Prev. Cont. 42 13
E. Abd-El-Nabey M.Sh. Khammis A. Ramadan A. El-Gindy (1996) Corrosion 52 671
ASTM (American Society for testing and Materials), ‘Metal Corrosion, Erosion and Wear’, Annual Book of ASTM Standards (1987) 0.3.02, G1–72.
M.A. Quraishi M.W. Khan M. Ajmal S. Muralidharan S.V. Iyer (1996) Anti-Corros. Met. Mater. 43 5
G. Schmitt (1984) Brit. Corros. J. 19 165
M.A. Quraishi M.W. Khan M. Ajmal S. Muralidharan S.V. Iyer (1996) J. Appl. Electrochem. 26 1253
M. Ajmal D. Jamal M. A. Quraishi (2000) Anti-Corros. Met. Mater. 47 77
M. Schorr J. Yahalom (1972) Corros. Sci. 12 867
R.T. Vashi V.A. Champaneri (1997) Ind. J. Chem. Technol. 4 180
J. Radosevic, M. Kliskic, L.J. Aljinovic and S. Vuko, Proceedings of the 8th European Symposium on ‘Corrosion Inhibition’, Ann. Univ. Ferrara, Italy (1995), p. 817.
I.N. Putilova S.A. Balezin U.P. Baranik (Eds) (1960) ‘Metal Corrosion Inhibitors’ Pergamon Press New York, NY
G.K. Gomma M.H. Wahadan (1995) Ind. J. Chem. Technol. 2 107
M. El Achouri M.S. Hajji M. Salem S. Kertit J. Aride R. Coudert E. Essassi (1996) Corrosion 52 103
S. Muralidharan K.L.N. Phani S. Ravichandran S.V.K. Iyer (1995) J. Electrochem. Soc. (USA), 142 1478
S.T. Hirozawa (1995) Proc. 8th Eur. Symp. Corros. Inhib. Ann. University, Ferrara, Italy, 1 25
M.A. Quraishi J. Rawat M. Ajmal (1998) Corrosion 54 996
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Quraishi, M.A., Sharma, H.K. Thiazoles as corrosion inhibitors for mild steel in formic and acetic acid solutions. J Appl Electrochem 35, 33–39 (2005). https://doi.org/10.1007/s10800-004-2055-8
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DOI: https://doi.org/10.1007/s10800-004-2055-8