Inhibition Effect of Parthenium Hystophrous L Extracts on the Corrosion of Mild Steel in Sulphuric Acid

The inhibition effect of Parthenium hystophrous L extract on the corrosion of mild steel in 1N sulphuric acid has been studied at different concentrations as well as different temperatures of inhibitor by mass loss studies, adsorption isotherms, Tafel polarization and electrochemical impedance spect...

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Published in:Journal of applied science & environmental management 2009-07, Vol.13 (1)
Main Authors: Muhamath, Basha Mubarak Ali, Kulanthai, Kannan
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Kulanthai, Kannan
description The inhibition effect of Parthenium hystophrous L extract on the corrosion of mild steel in 1N sulphuric acid has been studied at different concentrations as well as different temperatures of inhibitor by mass loss studies, adsorption isotherms, Tafel polarization and electrochemical impedance spectroscopy (EIS) between 308 and 338K. The exposed mild steel surface in the presence of inhibitor using Scanning Electron Microscope (SEM) is also studied. The corrosion rate increased with increase in temperature and decrease with increase in concentration of inhibitor compared to blank. The adsorption of this extracts has been found to obey Tempkin and Langmuir adsorption isotherm. Polarization results reveal that the extract is a mixed type inhibitor. The maximum inhibition efficiency of this extract observed at room temperature is 95.12%. @ JASEM
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The exposed mild steel surface in the presence of inhibitor using Scanning Electron Microscope (SEM) is also studied. The corrosion rate increased with increase in temperature and decrease with increase in concentration of inhibitor compared to blank. The adsorption of this extracts has been found to obey Tempkin and Langmuir adsorption isotherm. Polarization results reveal that the extract is a mixed type inhibitor. 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title Inhibition Effect of Parthenium Hystophrous L Extracts on the Corrosion of Mild Steel in Sulphuric Acid
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