Corrosion Inhibitors for Carbon Tetrachloride—Water Vapor Atmospheres

CORROSION ◽  
1959 ◽  
Vol 15 (9) ◽  
pp. 15-17 ◽  
Author(s):  
K. W. CALKINS ◽  
R. W. HAWLEY
Keyword(s):  
Water Vapor ◽  
Carbon Tetrachloride ◽  
Corrosion Rate ◽  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Corrosion Mechanism ◽  
Effective Inhibitor ◽  
Mild Steel Corrosion ◽  
Water Vapor Atmosphere

Abstract The use of various inhibitors for the prevention of mild steel corrosion in a system of carbon tetrachloride and water vapor was investigated. An attempt also was made to establish a corrosion mechanism. Of the 48 inhibitors tested, 2-aminoethanol appeared to be the most effective. It was found that 0.4 percent by weight of 2-aminoethanol in carbon tetrachloride decreased the corrosion rate of mild steel in a carbon tetrachloride-water vapor atmosphere by 99 percent. The next most effective inhibitor decreased the rate by about 95 percent.

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.

Schiff bases of increasing complexity as mild steel corrosion inhibitors in 2M HCl

2007 ◽  
Vol 49 (7) ◽  
pp. 2800-2814 ◽  
Author(s):  
Canan Küstü ◽  
Kaan C. Emregül ◽  
Orhan Atakol
Keyword(s):  
Mild Steel ◽  
Schiff Bases ◽  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Mild Steel Corrosion

Investigation of Mild Steel Corrosion Rate In San Diego Harbor

CORROSION ◽  
1961 ◽  
Vol 17 (4) ◽  
pp. 188t-190t ◽  
Author(s):  
M. H. PETERSON ◽  
L J. WALDRON
Keyword(s):  
Corrosion Rate ◽  
Mild Steel ◽  
San Diego ◽  
Steel Corrosion ◽  
Mild Steel Corrosion ◽  
Steel Panels ◽  
One Year ◽  
The One ◽  
Pit Depth ◽  
Different Levels

Abstract The basic corrosion rate at San Diego has been determined by exposure of an extensive series of mild steel panels for 6, 12, and 18 months. The corrosion rate as determined by weight loss, and the degree of pitting determined by pit depth measurements was measured for unprotected panels, and for three different levels of cathodic protection. The basic corrosion rate for unprotected panels over the one-year exposure was 25.8 mdd and the greatest pit depth found exceeded 60 thousandths of an inch. The fully protected panels suffered virtually no corrosion while the partially protected panels had a corrosion rate of 8.3 mdd. However, the greatest pit depth found on the partially protected panels was only 9 mils. 6.2.3, 2.2.2, 3.2.2, 5.2.1

scholarly journals The Inhibition of Mild Steel Corrosion in Sulfuric Acid by New Dapsone Derivatives

2014 ◽  
Vol 10 (3) ◽  
pp. 2388-2402 ◽  
Author(s):  
M.P. Chakravarthy ◽  
Dr. K. N. Mohana ◽  
C.B. Pradeep Kumar
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Electrochemical Impedance ◽  
Steel Corrosion ◽  
Tafel Polarization ◽  
New Class ◽  
Mild Steel Corrosion ◽  
Langmuir Isotherm Model ◽  
Polarization Studies ◽  
Corrosion Inhibition Efficiency

Dapsone derivatives Viz., 4, 4’-sulfonylbis(N-((1H-pyrrol-2-yl)methylene)aniline) (SBPMA) and 2-dimethylamino-5-[(4-{4-[(4-dimethylamino-benzylidene)-amino]-benzenesulfonyl}-phenylimino)-methyl]-benzene (DBBPB), a new class of corrosion inhibitors have been synthesized and their corrosion inhibition efficiency on mild steel in 0.5 M H2SO4 was investigated by mass loss,  Tafel polarization and AC impedance measurements. Potentiodynamic polarization studies showed that, these compounds behave as mixed type of corrosion inhibitors. The adsorption process was found to obey Langmuir isotherm model. Electrochemical impedance spectroscopy (EIS) studies revealed that polarization resistance (RP) increases and double layer capacitance (Cdl) decreases as the concentration of the inhibitors increases. Various thermodynamic parameters for the adsorption of inhibitors on mild steel were computed and discussed. FTIR, EDX and SEM analyses were performed to study the film persistency of the inhibitors.

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