scholarly journals A Comparative Study of Inhibitive Effects of Some Schiff Bases on Mild Steel in Acidic Media by Mass Loss Techniques

2010 ◽  
Vol 7 (4) ◽  
pp. 1230-1237
Author(s):  
Abha Goyal ◽  
V. K. Swami ◽  
S. P. Mathur
Keyword(s):  
Comparative Study ◽  
Mild Steel ◽  
Mass Loss ◽  
Corrosion Inhibition ◽  
Schiff Bases ◽  
Maximum Efficiency ◽  
Acidic Media ◽  
Acidic Solutions

Mass loss techniques have been employed to study the corrosion inhibition of some newly synthesized Schiff bases.viz.N-4-(Diethyl amino) salicylidine-2-amino-5-chloropyridine (SB1),N-(4-ethylbenzalidine)-2-amino-5-chloropyridine (SB2),N-(4-ethylbenzalidine)-2-amino-5-bromopyridine (SB3),N-4-(Diethyl amino) salicylidine-2-amino-5-bromopyridine (SB4) for mild steel in HCl and H2SO4solutions. Results of inhibition efficiencies from the mass loss technique show that Schiff bases are good inhibitors in both the acidic solutions. Inhibition efficiencies increase with the increase in the concentration of acids as well as those of inhibitors. Maximum efficiency for H2SO4was found 99.78% and for HCl it was 97.92%.

scholarly journals Synthesis, characterization and corrosion inhibition potential of two novel Schiff bases on mild steel in acidic medium

RSC Advances ◽  
2017 ◽  
Vol 7 (74) ◽  
pp. 47148-47163 ◽  
Author(s):  
Archana Pandey ◽  
B. Singh ◽  
Chandrabhan Verma ◽  
Eno E. Ebenso
Keyword(s):  
Phase Equilibrium ◽  
Liquid Phase ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Schiff Bases ◽  
Acidic Medium ◽  
Equilibrium Diagram ◽  
Phase Equilibrium Diagram ◽  
Solid Liquid

This study reports the synthesis of new Schiff bases namely 5-((4-chloro-3-nitrophenylimino)methyl)-2-methoxyphenol and 2-(4-hydroxy-3-methoxybenzylidineamino)-4-nitrophenol using solid–liquid phase equilibrium diagram and their characterization.

New spirocyclopropane derivatives: synthesis and evaluation of their performances toward corrosion inhibition of mild steel in acidic media

2020 ◽  
Vol 46 (6) ◽  
pp. 2881-2918 ◽  
Author(s):  
Maryam Chafiq ◽  
Abdelkarim Chaouiki ◽  
Hassane Lgaz ◽  
Rachid Salghi ◽  
K. Vijaya Bhaskar ◽  
...  
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Acidic Media

The corrosion inhibition of mild steel in acidic media by a new triazole derivative

1999 ◽  
Vol 41 (4) ◽  
pp. 789-803 ◽  
Author(s):  
F. Bentiss ◽  
M. Lagrenee ◽  
M. Traisnel ◽  
J.C. Hornez
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Acidic Media ◽  
Triazole Derivative

BIOMASS EXTRACTS FOR MATERIALS PROTECTION: CORROSION INHIBITION OF MILD STEEL IN ACIDIC MEDIA BYTerminalia chebulaEXTRACTS

2014 ◽  
Vol 201 (6) ◽  
pp. 790-803 ◽  
Author(s):  
E. E. Oguzie ◽  
M. A. Chidiebere ◽  
K. L. Oguzie ◽  
C. B. Adindu ◽  
H. Momoh-Yahaya
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Acidic Media

Electrochemical Studies of some New Mannich Bases Compounds as Corrosion Inhibitors for Mild Steel in Acidic Media

2012 ◽  
Vol 538-541 ◽  
pp. 2329-2333 ◽  
Author(s):  
Hui Xia Feng ◽  
Jian Li ◽  
Xiao Hong Gao
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Mannich Bases ◽  
Maximum Efficiency ◽  
Tafel Polarization ◽  
Mild Steel Corrosion ◽  
Polarization Studies ◽  
Inhibition Property

The corrosion inhibition behaviour of four selected Mannich bases compounds,namely 3-((N-methyl,N-phenyl)-methyl)2,4-Acetylacetone(MPMAA),3-((N-phenyl)-methyl) 2,4-Acetylacetone (PMAA),3-((N, N-diethyl)-methyl) 2, 4-Acetylacetone(DMAA) and 3-((N, N-methyl)-methyl) 2, 4-Acetylacetone (MMAA) as corrosion inhibitors for mild steel in 1M HCl solutions. Tafel polarization methods were performed to determine the corrosion parameters and inhibition efficiencies. Experimental results showed that PMAA is an excellent inhibitor for mild steel corrosion in 1M HCl solutions; showing a maximum efficiency 92.3% at concentration of 40mg/L. Polarization studies showed that the Mannich bases compounds can be regarded as mixed-type inhibitors and the inhibition efficiency of the four inhibitors followed the order PMAA > MPMAA > DMAA > MMAA. Then scanning electron microscope (SEM)techniques were also employed to examine the mechanism of corrosion inhibition property.

scholarly journals Molecular Assembly between Weak Crosslinking Cyclodextrin Polymer and trans-Cinnamaldehyde for Corrosion Inhibition towards Mild Steel in 3.5% NaCl Solution: Experimental and Theoretical Studies

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 635 ◽  
Author(s):  
Yucong Ma ◽  
Baomin Fan ◽  
Tingting Zhou ◽  
Hua Hao ◽  
Biao Yang ◽  
...  
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
1H Nmr ◽  
Active Sites ◽  
Molecular Assembly ◽  
Proton Nuclear Magnetic Resonance ◽  
Maximum Efficiency ◽  
Nacl Solution ◽  
Cyclodextrin Polymer ◽  
Anodic Reactions

Constructing molecular assembly between a soluble cyclodextrin polymer (SCDP) and an anticorrosive component is conducive to increasing the availability of a corrosion inhibitor with low molecular polarity in aqueous solution. The SCDP was prepared via the weak crosslinking effect of glutaraldehyde using β-cyclodextrin as the subunit, whose structure was confirmed by proton nuclear magnetic resonance spectra (1H NMR), X-ray diffraction and morphology. An assembly between SCDP (host) and trans-cinnamaldehyde (guest, CA) was constructed, and the intermolecular interactions were disclosed by Fourier transform infrared spectra (FTIR). The corrosion inhibition of SCDP/CA assembly for mild steel in 3.5% NaCl solution was assessed through electrochemical and surface analyses. 1H NMR results showed that exterior hydroxyls of β-cyclodextrin were the active sites for crosslinking. Hydrogen bonds might be the binding force between SCDP and CA according to FTIR analyses. Electrochemical measurements revealed that SCDP/CA assembly could suppress both cathodic and anodic reactions and enhance the polarization impedance for mild steel in the corrosive medium with a maximum efficiency of 92.2% at 30 °C. Surface analyses showed that CA molecules could be released from the assembly followed by the energy competition mechanism, and solely adsorb on the steel surface in parallel form, which was further evidenced by theoretical modeling.

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