The effect of temperature, CO2, H2S gases and the resultant iron carbonate and iron sulfide compounds on the sour corrosion behaviour of ASTM A-106 steel for pipeline transportation

2019 ◽  
Vol 171 ◽  
pp. 184-193 ◽  
Author(s):  
M. Asadian ◽  
M. Sabzi ◽  
S.H. Mousavi Anijdan
Keyword(s):  
Iron Sulfide ◽  
Corrosion Behaviour ◽  
Effect Of Temperature ◽  
Pipeline Transportation ◽  
Iron Carbonate ◽  
Sour Corrosion

scholarly journals Corrosion Behaviour of 316L Stainless Steel in CNTs–Water Nanofluid: Effect of Temperature

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 119
Author(s):  
Dana H. Abdeen ◽  
Muataz A. Atieh ◽  
Belabbes Merzougui
Keyword(s):  
Stainless Steel ◽  
316L Stainless Steel ◽  
Corrosion Behaviour ◽  
Gum Arabic ◽  
Steel Sample ◽  
Open Circuit ◽  
Deionized Water ◽  
Effect Of Temperature ◽  
Different Temperatures ◽  
In Series

The inhibition behavior of carbon nanotubes (CNTs) and Gum Arabic (GA) on the corrosion of 316L stainless steel in CNTs–water nanofluid under the effect of different temperatures was investigated by electrochemical methods and surface analysis techniques. Thereby, 316L stainless steel samples were exposed to CNTs–water nanofluid under temperatures of 22, 40, 60 and 80 °C. Two concentrations of the CNTs (0.1 and 1.0 wt.% CNTs) were homogenously dispersed in deionized water using the surfactant GA and tested using three corrosion tests conducted in series: open circuit test, polarization resistance test, and potentiodynamic scans. These tests were also conducted on the same steel but in solutions of GA-deionized water only. Tests revealed that corrosion increases with temperature and concentration of the CNTs–water nanofluids, having the highest corrosion rate of 32.66 milli-mpy (milli-mil per year) for the 1.0 wt.% CNT nanofluid at 80 °C. In addition, SEM observations showed pits formation around areas of accumulated CNTs that added extra roughness to the steel sample. The activation energy analysis and optical surface observations have revealed that CNTs can desorb at higher temperatures, which makes the surface more vulnerable to corrosion attack.

The effect of temperature and ionic strength on iron carbonate (FeCO3) solubility limit

2009 ◽  
Vol 51 (6) ◽  
pp. 1273-1276 ◽  
Author(s):  
Wei Sun ◽  
Srdjan Nešić ◽  
Richard C. Woollam
Keyword(s):  
Ionic Strength ◽  
Solubility Limit ◽  
Effect Of Temperature ◽  
Iron Carbonate

EXPERIMENTAL AND QUANTUM STUDIES ON ADSORPTION AND CORROSION INHIBITION EFFECT OF IMIDAZOLE DERIVATIVES ON N80 STEEL IN HYDROCHLORIC ACID

2013 ◽  
Vol 20 (06) ◽  
pp. 1350057 ◽  
Author(s):  
M. YADAV ◽  
SUMIT KUMAR ◽  
DIPTI SHARMA ◽  
P. N. YADAV
Keyword(s):  
Weight Loss ◽  
Hydrochloric Acid ◽  
Molecular Orbital ◽  
Corrosion Inhibition ◽  
Electrochemical Impedance ◽  
Corrosion Behaviour ◽  
Molecular Surface ◽  
Effect Of Temperature ◽  
Am1 Method ◽  
Inhibition Effect

The inhibition effect of synthesized N ′-(phenylmethylidene)-2-(2-methyl-1 H -benzimidazol-1-yl)acetohydrazides, N ′-(4-methylphenylmethylidene)-2-(2-methyl-1 H -benzimidazol-1-yl)acetohydrazides, and N ′-(4-methoxyphenylmethylidene)-2-(2-methyl-1 H -benzimidazol-1-yl)acetohydrazides on the corrosion behaviour of N 80 steel in 15% hydrochloric acid solution was investigated using weight loss, potentiostatic polarization and electrochemical impedance spectroscopy methods. The inhibition efficiency increased as the concentration of the inhibitors was increased. The effect of temperature on corrosion inhibition was investigated by weight loss method and thermodynamic parameters were calculated. Potentiodynamic polarization measurements show that all the three studied inhibitors act as mixed inhibitor. The adsorption of inhibitors on N 80 steel surface obeys Langmuir adsorption isotherm. The structure of inhibitors was optimized using semiemperical AM1 method. Theoretical parameters such as the highest occupied molecular orbital (E HOMO ), lowest unoccupied molecular orbital (E LUMO ) energy levels, energy gap (ΔE = E LUMO - E HOMO ), dipole moment (μ), global hardness (γ), softness (σ), binding energy, molecular surface area and the fraction of electrons transferred (ΔN) were calculated and the adsorption mechanism was discussed. Scanning electron microscopy was used to characterize the surface marphology of the N 80 steel.

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