Interaction of Schiff bases and their corresponding amines and aldehyde with mild steel surface in 1.0 M hydrochloric acid solution

2010 ◽  
Author(s):  
Norlaila Ramlee ◽  
Siti Najihah Abu Bakar ◽  
Hadariah Bahron ◽  
Mohamad Kamal Harun ◽  
Karimah Kassim ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Schiff Bases ◽  
Hydrochloric Acid Solution ◽  
Steel Surface ◽  
Mild Steel Surface

scholarly journals Insights into Corrosion Inhibition Behavior of a 5-Mercapto-1, 2, 4-Triazole Derivative for Mild Steel in Hydrochloric Acid Solution: Experimental and DFT Studies

Lubricants ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 122
Author(s):  
Israa Abd Alkadir Aziz ◽  
Iman Adnan Annon ◽  
Makarim H. Abdulkareem ◽  
Mahdi M. Hanoon ◽  
Mohammed H. Alkaabi ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Molecular Orbital ◽  
Corrosion Protection ◽  
Hydrochloric Acid Solution ◽  
Steel Surface ◽  
Energy Gap ◽  
Frontier Molecular Orbital ◽  
Mild Steel Surface

A triazole heterocyclic compound namely 3-(4-ethyl-5-mercapto-1, 2, 4-triazol-3-yl)-1-phenylpropanone (EMTP) was examined for its corrosion protection of mild steel (MS) against 1 M hydrochloric acid medium using gravimetric techniques. EMTP exhibited excellent corrosion protection performance at low and high concentrations towards MS in HCl solution. Comparison of corrosion protection performance of EMTP and its parent triazole and temperature effects of on inhibition efficacy were also studied. EMTP has potential corrosion inhibitor for mild steel in 1.0 M hydrochloric acid solution with the highest protection efficacy of 97% at 303 K. The weight loss findings implied that EMTP protects the metal surface corrosion through the creation of a protective layer at the surface mild steel–corrosive solution interface. The inhibitive efficacy increases with the increase of inhibitor concentration and decreases with increased temperature. The adsorption of EMTP on the surface of MS follows Langmuir’s adsorption isotherm process. DFT method was conducted on EMTP molecule to calculate the quantum chemical parameters and to determine the relationship between the molecular structure of EMTP and protection performance. The molecular parameters, such as energy gap and frontier molecular orbital (highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO)), and the absolute electronegativity (χ) value from inhibitor molecules to unoccupied d-orbital of iron atoms on the mild steel surface were also determined and correlated with protection efficiency. The theoretical findings revealed that the protection performance of EMTP increased with the increase in HOMO energy, and the nitrogen, oxygen and sulfur atoms are most probable positions for bonding through giving electrons to the d-orbital of iron atoms on the mild steel surface.

Corrosion inhibition of mild steel in hydrochloric acid solution by some double Schiff bases

2010 ◽  
Vol 52 (4) ◽  
pp. 1351-1361 ◽  
Author(s):  
N. Soltani ◽  
M. Behpour ◽  
S.M. Ghoreishi ◽  
H. Naeimi
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Schiff Bases ◽  
Hydrochloric Acid Solution

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
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