4-(N,N-diethylamino)benzaldehyde thiosemicarbazone as corrosion inhibitor for 6061 Al - 15 vol. pct. SiC(p) composite and its base alloy

Authors

G M. Pinto
J Nayak
A N. Shetty

Publication Date

2011-12-01

Abstract

The inhibitive action of 4-(N,N-diethylamino)benzaldehyde thiosemicarbazone (DEABT) on the corrosion behavior of 6061 Al -15 vol. pct. SiC(p) composite and its base alloy was studied at different temperatures in sulfuric acid medium containing varying concentrations of it, using Tafel extrapolation and AC impedance spectroscopy (EIS) techniques. Results showed that DEABT was an effective inhibitor, showing inhibition efficiency of 80 % in 0.5 M sulfuric acid. The adsorption of DEABT on both the composite and the base alloy was found to be through physisorption obeying Langmuirs adsorption isotherm.The thermodynamic parameters such as free energy of adsorption and activation parameters were calculated.

First Page

53

Last Page

71

Recommended Citation

Pinto, G M.; Nayak, J; and Shetty, A N. (2011) "4-(N,N-diethylamino)benzaldehyde thiosemicarbazone as corrosion inhibitor for 6061 Al - 15 vol. pct. SiC(p) composite and its base alloy," Journal of Metals, Materials and Minerals: Vol. 21: No. 2, Article 7.
Available at: https://digital.car.chula.ac.th/jmmm/vol21/iss2/7