Reactivity and Fe complexation analysis of a series of quinoxaline derivatives used as steel corrosion inhibitors

2019 ◽  
Vol 31 (2) ◽  
pp. 631-645 ◽  
Author(s):  
Z. El Adnani ◽  
M. Mcharfi ◽  
M. Sfaira ◽  
M. Benzakour ◽  
A. T. Benjelloun ◽  
...  
Keyword(s):  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Quinoxaline Derivatives

Biomass Conversion Products as Steel Corrosion Inhibitors

2019 ◽  
Vol 92 (5) ◽  
pp. 620-624
Author(s):  
V. I. Mishurov ◽  
E. N. Shubina ◽  
V. A. Klushin ◽  
A. A. Chizhikova ◽  
V. P. Kashparova ◽  
...  
Keyword(s):  
Corrosion Inhibitors ◽  
Biomass Conversion ◽  
Steel Corrosion

NATURAL CORROSION INHIBITORS FOR STEEL REINFORCEMENT IN CONCRETE — A REVIEW

2015 ◽  
Vol 22 (03) ◽  
pp. 1550040 ◽  
Author(s):  
PANDIAN BOTHI RAJA ◽  
SEYEDMOJTABA GHOREISHIAMIRI ◽  
MOHAMMAD ISMAIL
Keyword(s):  
Reinforced Concrete ◽  
Corrosion Inhibitors ◽  
Construction Materials ◽  
Steel Corrosion ◽  
Vital Role ◽  
Prevention Measures ◽  
Main Culprit ◽  
Chloride Attack ◽  
Reinforced Steel ◽  
Metal Protection

Reinforced concrete is one of the widely used construction materials for bridges, buildings, platforms and tunnels. Though reinforced concrete is capable of withstanding a large range of severe environments including marine, industrial and alpine conditions, there are still a large number of failures in concrete structures for many reasons. Either carbonation or chloride attack is the main culprit which is due to depassivation of reinforced steel and subsequently leads to rapid steel corrosion. Among many corrosion prevention measures, application of corrosion inhibitors play a vital role in metal protection. Numerous range of corrosion inhibitors were reported for concrete protection that were also used commercially in industries. This review summarizes the application of natural products as corrosion inhibitors for concrete protection and also scrutinizes various factors influencing its applicability.

scholarly journals Inhibition of Pipeline Steel Corrosion in 0.5 M H2SO4 Using Cotyledon of Chrysophyllum Albidum

2020 ◽  
Vol 24 (4) ◽  
pp. 691-697
Author(s):  
E.P. Othaki ◽  
N.C. Ngobiri
Keyword(s):  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Adsorption Process ◽  
Pipeline Steel ◽  
Steel Corrosion ◽  
Langmuir Adsorption ◽  
Extract Concentration ◽  
Ir Studies ◽  
Ft Ir ◽  
As Adsorption

The corrosion inhibition characteristics of Chrysophyllum albidum cotyledon extract was studied as a green and sustainable corrosion inhibitors for pipeline steel in acidic environment attemperatures, 303,313 and 323K using gravimetric technique.The results obtained showed that the inhibition efficiency increased with increase in extract concentration but decrease with increase in temperature. The extract attained an inhibition efficiency of 94 % with 5 g/L at 303 K and 52.2 % with 1 g/L at 333K. Also increase in concentration of the extract lead to increase in activation energydepicting an exothermic process.Fourier transform infrared spectroscopy (FT-IR) studies showed the mode of inhibition as adsorption of phytochemicals from the extract on pipeline steel surface. Langmuir adsorption isotherm best fitted into the adsorption process which is spontaneous and physical. Keywords: Chrysophyllum albidum, Pipeline steel, Inhibition, Adsorption.

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.

5-Arylpyrimido-[4,5-b]quinoline-diones as new and sustainable corrosion inhibitors for mild steel in 1 M HCl: a combined experimental and theoretical approach

RSC Advances ◽  
2016 ◽  
Vol 6 (19) ◽  
pp. 15639-15654 ◽  
Author(s):  
Chandrabhan Verma ◽  
L. O. Olasunkanmi ◽  
I. B. Obot ◽  
Eno E. Ebenso ◽  
M. A. Quraishi
Keyword(s):  
Molecular Dynamics ◽  
Weight Loss ◽  
Molecular Dynamics Simulation ◽  
Mild Steel ◽  
Quantum Chemical ◽  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Dynamics Simulation ◽  
Simulation Methods ◽  
Mild Steel Corrosion

The inhibition of mild steel corrosion in 1 M HCl by four 5-arylpyrimido-[4,5-b]-quinoline-diones has been investigated using weight loss, electrochemical, surface, and quantum chemical calculations and molecular dynamics simulation methods.

Studies on carbon steel corrosion in molybdate and silicate solutions as corrosion inhibitors

1991 ◽  
Vol 247 (2-3) ◽  
pp. 352-359 ◽  
Author(s):  
Jiann-Ruey Chen ◽  
Huei-Yun Chao ◽  
Yuh-Lin Lin ◽  
Iua-Jou Yang ◽  
Jung-Chou Oung ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitors ◽  
Steel Corrosion

SECM/SKP and SVET studies on mitigation of N80 steel corrosion by some polymers

2018 ◽  
Vol 42 (14) ◽  
pp. 11404-11416 ◽  
Author(s):  
Hongwei Feng ◽  
Ambrish Singh ◽  
Yuanpeng Wu ◽  
Yuanhua Lin
Keyword(s):  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Solution Polymerization ◽  
Common Solution ◽  
N80 Steel

Three polymers, namely PAMPS (P1), P(AMPS-co-NVP) (P2) and P(AMPS-co-DMC) (P3), synthesized by common solution polymerization were investigated as corrosion inhibitors for N80 steel in 3.5 wt% NaCl flooded with CO2.

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