scholarly journals Studies of Inhibition effect “E & Z’’ Configurations of hydrazine Derivatives on Mild Steel Surface in phosphoiric acid

2019 ◽  
Vol 8 (6) ◽  
pp. 6336-6353 ◽  
Author(s):  
M.E. Belghiti ◽  
M. Mihit ◽  
A. Mahsoune ◽  
A. Elmelouky ◽  
R. Mghaiouini ◽  
...  
Keyword(s):  
Mild Steel ◽  
Steel Surface ◽  
Mild Steel Surface ◽  
Inhibition Effect ◽  
Hydrazine Derivatives

Adsorption and corrosion inhibition effect of Schiff base molecules on the mild steel surface in 1 M HCl medium: a combined experimental and theoretical approach

2015 ◽  
Vol 17 (8) ◽  
pp. 5679-5690 ◽  
Author(s):  
Sourav Kr. Saha ◽  
Alokdut Dutta ◽  
Pritam Ghosh ◽  
Dipankar Sukul ◽  
Priyabrata Banerjee
Keyword(s):  
Schiff Base ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Theoretical Approach ◽  
Steel Surface ◽  
Md Simulation ◽  
Simulation Studies ◽  
Mild Steel Surface ◽  
Inhibition Effect ◽  
Hcl Medium

On mild steel surface in 1 M HCl medium corrosion inhibition performances of three Schiff base inhibitors (L1, L2 and L3) are investigated both experimentally and theoretically (DFT and MD simulation studies).

Interactions and Inhibition Effect of Urea-Derived Mannich Bases on a Mild Steel Surface in HCl

2015 ◽  
Vol 119 (38) ◽  
pp. 22025-22043 ◽  
Author(s):  
Mani Jeeva ◽  
G. Venkatesa Prabhu ◽  
Maria susai Boobalan ◽  
Chinnaiyan Mahalingam Rajesh
Keyword(s):  
Mild Steel ◽  
Steel Surface ◽  
Mannich Bases ◽  
Mild Steel Surface ◽  
Inhibition Effect

STUDIES ON THE INHIBITIVE EFFECT OF 3-HYDROXYFLAVONE ON THE ACID CORROSION OF MILD STEEL

2009 ◽  
Vol 16 (06) ◽  
pp. 845-853 ◽  
Author(s):  
MUTHU NADAR LAVANYA ◽  
DEVARAYAN KESAVAN ◽  
NAGARAJAN PRABHAVATHI ◽  
NAGARAJAN SULOCHANA
Keyword(s):  
Weight Loss ◽  
Hydrochloric Acid ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Steel Surface ◽  
Mild Steel Surface ◽  
Inhibition Effect ◽  
Tafel Polarization ◽  
Weight Loss Method ◽  
Loss Method

The corrosion inhibition effect of 3-hydroxyflavone was studied on mild steel in 1 M hydrochloric acid ( HCl ). The anticorrosive effect was evaluated by weight loss and electrochemical methods which include Tafel polarization and AC impedance studies at 300 K. In weight loss method, the inhibition efficiency increased with increase in inhibitor concentration, and decreased with increase in temperature and immersion time, and acid concentration. The inhibitor showed maximum efficiency of 91% at 4 × 10-4 M concentration in 1 M hydrochloric acid. The Tafel polarization study showed that the inhibitor behaves likely as cathodic type. The corrosion inhibition effect measured by weight loss method and electrochemical studies was in good agreement with each other. The surface analysis was done by using scanning electron microscope (SEM). Several adsorption isotherms are assessed to study the adsorption behavior of the inhibitor on the mild steel surface. The negative value of ΔG ads indicates the spontaneous adsorption of the inhibitor on mild steel surface.

Corrosion Inhibition of Mild Steel by Electrodeposited Poly(M-Aminophenol) Coating

2021 ◽  
Vol 317 ◽  
pp. 498-505
Author(s):  
Sabrina M. Yahaya ◽  
Mohamad Kamal Harun ◽  
Ismaliza Ismail ◽  
Rosmamuhamadani Ramli
Keyword(s):  
Mild Steel ◽  
Steel Surface ◽  
Electrochemical Impedance ◽  
Impedance Measurement ◽  
Barrier Properties ◽  
Electrical Circuit ◽  
Significant Drop ◽  
Mild Steel Surface ◽  
Barrier Resistance ◽  
And Performance

In this study, poly(m-aminophenol) (PMAP) coating was electrochemically synthesized by cyclic voltammetry (CV) on mild steel surface to investigate the effects of its barrier protection within the scope of its electrochemical impedance towards further oxidation of the mild steel substrates. The developed PMAP coating were characterized by Fourier Transform Infrared (FTIR) spectroscopy and Field Emission Scanning Electron Microscopy (FESEM). The barrier resistance ability of PMAP coating towards corrosion of mild steel was determined in 0.5 M aqueous sodium chloride solution (NaCl) at various immersion times by the electrochemical impedance spectroscopy (EIS). The barrier properties were interpreted through impedance measurement using Nyquist and Bode plots. Equivalent electrical circuit models derived from the plots were employed to describe the coating barrier behaviour and performance. Data obtained showed that, the oxidation peak of PMAP coating were observed at potential +1.0 V (Ag/AgCl). The micrograph of FESEM indicates the formation of a dense and continous PMAP coatings. In FTIR analyses, the presence of peak around 1082 cm-1 ascribed to C–O–C etheric linkage which supported the formation of electro polymerized PMAP coating on mild steel surface. EIS measurement revealed that, PMAP coatings experienced a significant drop in total impedance values with time followed by the development of an electrochemical reactions on coating/metal interface, which indicates the gradual degradation of the barrier resistance ability of the PMAP coatings.

Electrochemical behaviour of acetyl G as corrosion inhibitor for mild steel in acid medium

2015 ◽  
Vol 44 (6) ◽  
pp. 371-378 ◽  
Author(s):  
Y. Sangeetha ◽  
S. Meenakshi ◽  
C. Sairam Sundaram
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Acid Medium ◽  
Steel Surface ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Electrochemical Behaviour ◽  
Green Inhibitor ◽  
Content Type ◽  
Mild Steel Surface

Purpose – The purpose of this paper is to develop an eco-friendly corrosion inhibitor for mild steel in 1 M HCl. Design/methodology/approach – A pharmaceutical drug acetyl G was investigated for its corrosion inhibition efficiency using weight loss method, potentiodynamic polarisation and electrochemical impedance spectroscopy. Findings – The inhibition efficiency increased with increase in inhibitor concentration. Results from polarisation studies revealed mixed type of inhibition. Impedance studies, scanning electron microscopy and Fourier transform spectroscopy confirm the adsorption of inhibitor on the mild steel surface. Research limitations/implications – The drug acetyl G has sulphur and nitrogen atoms which effectively block the corrosion of mild steel and is non-toxic and has good inhibition efficiency. Practical implications – This method provides an excellent, non-toxic and cost-effective material as a corrosion inhibitor for mild steel in acid medium. Originality/value – Application of this drug as a corrosion inhibitor has not been reported yet in the literature. Replacing the organic inhibitors, this green inhibitor shows excellent inhibition efficiency. This is adsorbed excellently on the mild steel surface due to the presence of long chain and hetero atoms. Thus, the drug retards the corrosion reaction.

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