scholarly journals Corrosion Inhibition of Aluminium in Gas and Acid Media by Some Chalcone-Based N-(3-Aminopropyl)Imidazoles: TD-DFT-Based FMO, Conceptual DFT, QTAIM and EDA Studies

2021 ◽  
Vol 09 (01) ◽  
pp. 37-63
Author(s):  
Fritzgerald Kogge Bine ◽  
Stanley Numbonui Tasheh ◽  
Nyiang Kennet Nkungli
Keyword(s):  
Corrosion Inhibition ◽  
Conceptual Dft ◽  
Acid Media ◽  
Td Dft

Experimental and theoretical study on the corrosion inhibition of API 5L X52 steel in acid media by a new quinazoline derivative

2020 ◽  
Vol 320 ◽  
pp. 114449 ◽  
Author(s):  
J. Aldana-González ◽  
H. Cervantes-Cuevas ◽  
C. Alfaro-Romo ◽  
E. Rodriguez-Clemente ◽  
J. Uruchurtu-Chavarin ◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Theoretical Study ◽  
Quinazoline Derivative ◽  
Acid Media ◽  
X52 Steel

scholarly journals Corrosion Inhibition of Mild Steel in Acidic Media by N-[(3,4-Dimethoxyphenyl)Methyleneamino]-4-Hydroxy-Benzamide

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Kashmitha Muthamma ◽  
Preethi Kumari ◽  
M. Lavanya ◽  
Suma A. Rao
Keyword(s):  
Dft Calculations ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Density Functional ◽  
Surface Characterization ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Corrosion Behaviour ◽  
Low Carbon ◽  
Acid Media

Abstract Mild steel (a low carbon steel) is an affordable engineering material used for many purposes in various environments including mild acidic environment with some precautions. The corrosion behaviour of mild steel (MS) in 0.5 M H2SO4 and 0.5 M HCl, in the temperature range (303–323 K) without and with the inhibitor N-[(3,4-dimethoxyphenyl) methyleneamino]-4-hydroxy-benzamide (DMHB), was investigated using Potentiodynamic polarization and Electrochemical impedance spectroscopy (EIS) techniques supplementing with surface characterization study using scanning electron microscope (SEM) and atomic force spectroscopy (AFM). Experimental observations were found to be in agreement with Density functional theory (DFT) calculations. The inhibition efficiency increases with increase in DMHB concentration and showed maximum inhibition efficiency of 86% in 0.5 M H2SO4 and 81% in 0.5 M HCl, respectively, at concentration of 3 × 10─3 M at 303 K. The inhibition efficiency of DMHB obtained relatively at its lower concentration (3 × 10─3 M) compared to other reported related compounds confirms its potential towards corrosion inhibition. The variation in the kinetic and thermodynamic parameters indicated physisorption of DMHB on MS and its mixed type inhibitive action followed Langmuir’s isotherm model. DFT calculations go along with the experimental results, signifying the potential corrosion inhibition behaviour of DMHB for MS in both the acid media.

Influence of bis-(2-benzothiazolyl)-disulfide on corrosion inhibition of mild steel in hydrochloric acid media

2010 ◽  
Vol 15 (9) ◽  
pp. 1867-1873 ◽  
Author(s):  
Madjid Abdeli ◽  
Naghi Parvini Ahmadi ◽  
Rasoul Azari Khosroshahi
Keyword(s):  
Hydrochloric Acid ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Acid Media ◽  
Hydrochloric Acid Media

THEORETICAL AND EXPERIMENTAL STUDIES OF CORROSION INHIBITION OF THIOHENE-2-ETHYLAMINE ON MILD STEEL IN ACID MEDIA

2015 ◽  
Vol 76 (13) ◽  
Author(s):  
Bishir Usman ◽  
Hasmerya Maarof ◽  
Hassan H. Abdallah ◽  
Rosmahida Jamaludin ◽  
Mohamed Noor Hasan ◽  
...  
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Metal Surface ◽  
Electrochemical Impedance ◽  
Experimental Studies ◽  
Qsar Model ◽  
Acid Media ◽  
Structure Activity ◽  
C And N ◽  
Quantitative Structure Activity Relation

Corrosion inhibition of mild steel in 0.5M H2SO4 at 30oC with thiophene-2- ethylamine (TEA) as inhibitor has been assess by quantitative structure activity relation (QSAR) model and quantum chemical calculations. The results were evaluated using weight loss and electrochemical methods such as potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). The results showed good performance of TEA in corrosion protection which behaves as mixed inhibitor from PDP. The micrograph from FESEM and EDX dot mapping showed that the inhibitor adsorbed onto the metal surface with different distribution for S, C and N atoms which indicate less damage on the metal surface in the presence of TEA.

Corrosion inhibition of 4-aminoquinaldine on mild steel in acid media

2014 ◽  
Vol 41 (7) ◽  
pp. 4861-4871 ◽  
Author(s):  
Meltem Düdükcü ◽  
Gülşen Avcı
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Acid Media

Quantum chemical and experimental characterization of the effect of ziprasidone on the corrosion inhibition of steel in acid media

2011 ◽  
Vol 53 (12) ◽  
pp. 4109-4117 ◽  
Author(s):  
S.E. Nataraja ◽  
T.V. Venkatesha ◽  
H.C. Tandon ◽  
B.S. Shylesha
Keyword(s):  
Corrosion Inhibition ◽  
Quantum Chemical ◽  
Experimental Characterization ◽  
Acid Media
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