scholarly journals Aqueous Extract of Kalmegh (Andrographis paniculata) Leaves as Green Inhibitor for Mild Steel in Hydrochloric Acid Solution

2010 ◽  
Vol 2010 ◽  
pp. 1-10 ◽  
Author(s):  
Ambrish Singh ◽  
V. K. Singh ◽  
M. A. Quraishi
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Metal Surface ◽  
Hydrochloric Acid Solution ◽  
Electrochemical Impedance ◽  
Andrographis Paniculata ◽  
Protective Film ◽  
Acid Media ◽  
Green Inhibitor

The inhibition of the corrosion of mild steel in hydrochloric acid solution by the extract of Kalmegh (Andrographis paniculata) leaves extract has been studied using weight loss, electrochemical impedance spectroscopy, linear polarization, and potentiodynamic polarization techniques. Inhibition was found to increase with increasing concentration of the extract. The effect of temperature, immersion time, and acid concentration on the corrosion behavior of mild steel in 1 M HCl with addition of extract was also studied. The inhibition was assumed to occur via adsorption of the inhibitor molecules on the metal surface. The adsorption of the molecules of the extract on the mild steel surface obeyed the Langmuir adsorption isotherm. The protective film formed on the metal surface was analyzed by FTIR spectroscopy. The results obtained showed that the extract of Kalmegh (Andrographis paniculata) leaves extract could serve as an effective inhibitor of the corrosion of mild steel in hydrochloric acid media.

Extract ofCassia sennaas Green Inhibitor for the Corrosion of Mild Steel in 1M Hydrochloric Acid Solution

2014 ◽  
Vol 3 (1) ◽  
pp. 20140010
Author(s):  
R. Karthik ◽  
P. Muthukrishnan ◽  
A. Elangovan ◽  
B. Jeyaprabha ◽  
P. Prakash
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Hydrochloric Acid Solution ◽  
Green Inhibitor

scholarly journals Corrosion Inhibition Effect of 4-Hydroxy-N′-[(E)-(1H-indole-2-ylmethylidene)] Benzohydrazide on Mild Steel in Hydrochloric Acid Solution

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Preethi Kumari ◽  
Prakash Shetty ◽  
Suma A. Rao
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Hydrochloric Acid Solution ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Langmuir Adsorption ◽  
Solution Interface ◽  
Inhibition Performance

The inhibition performance and adsorption behaviour of 4-hydroxy-N′-[(E)-(1H-indole-2-ylmethylidene)] benzohydrazide (HIBH) on mild steel in 1 M HCl solution were tested by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The inhibition efficiency of HIBH increases with increase in inhibitor concentration in the temperature range 30–60°C. Polarisation curves indicate that HIBH is a mixed inhibitor, affecting both cathodic and anodic corrosion currents. The adsorption process of HIBH at the mild steel/hydrochloric acid solution interface obeyed Langmuir adsorption isotherm model and inhibition takes place by mixed adsorption, predominantly chemisorption. The activation and thermodynamic parameters for the corrosion inhibition process were calculated to elaborate the mechanism of corrosion inhibition.

Acalypha torta Leaf Extract as Green Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Solution

2013 ◽  
Vol 52 (2) ◽  
pp. 722-728 ◽  
Author(s):  
Pavithra M. Krishnegowda ◽  
Venkatarangaiah T. Venkatesha ◽  
Punith Kumar M. Krishnegowda ◽  
Shylesha B. Shivayogiraju
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Hydrochloric Acid Solution ◽  
Leaf Extract ◽  
Green Corrosion Inhibitor

scholarly journals Azo Dye Compounds as Corrosion Inhibitors for Dissolution of Mild Steel in Hydrochloric Acid Solution

2013 ◽  
Vol 31 (2) ◽  
pp. 119-139 ◽  
Author(s):  
A M Nagiub ◽  
M H Mahross ◽  
H F Y Khalil ◽  
B N A Mahran ◽  
M M Yehia ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Hydrochloric Acid Solution ◽  
Azo Dye ◽  
Corrosion Inhibitors

Paederia Foetida Leaves Extract as a Green Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Solution

2021 ◽  
Author(s):  
Nayem Hossain ◽  
Mohammad Chowdhury ◽  
A.K.M. Parvez Iqbal ◽  
Md. Sariful Islam ◽  
Nur Yusuf Sheikh Omar
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Hydrochloric Acid Solution ◽  
Green Corrosion Inhibitor ◽  
Paederia Foetida
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