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

Authors

  • Geetha Mable Pinto Department of Chemistry, National Institute of Technology Karnataka, Surathkal
  • Jagannath Nayak Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka, Surathkal
  • A Nityananda Shetty Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka, Surathkal

Keywords:

Aluminum, Metal matrix composites, EIS, Polarization, Acid corrosion

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 Langmuir’s adsorption isotherm.The thermodynamic parameters such as free energy of adsorption and activation parameters were calculated.

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Published

2011-12-31

How to Cite

[1]
G. M. Pinto, J. Nayak, and A. N. . Shetty, “4-(N,N-diethylamino)benzaldehyde thiosemicarbazone as corrosion inhibitor for 6061 Al - 15 vol. pct. SiC(p) composite and its base alloy”, J Met Mater Miner, vol. 21, no. 2, Dec. 2011.

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