Electrochemical behavior of carbon steel with bentonite/sand in saline environment

2020 ◽  
Vol 72 (1-2) ◽  
pp. 211-217
Author(s):  
Ayami Kitayama ◽  
Naoki Taniguchi ◽  
Seiichiro Mitsui
Keyword(s):  
Carbon Steel ◽  
Electrochemical Behavior ◽  
Saline Environment

scholarly journals Effect of CO2 Partial Pressure on the Corrosion Inhibition of N80 Carbon Steel by Gum Arabic in a CO2-Water Saline Environment for Shale Oil and Gas Industry

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4245
Author(s):  
Gaetano Palumbo ◽  
Kamila Kollbek ◽  
Roma Wirecka ◽  
Andrzej Bernasik ◽  
Marcin Górny
Keyword(s):  
Carbon Steel ◽  
Partial Pressure ◽  
Corrosion Inhibition ◽  
Photoelectron Spectroscopy ◽  
Inhibition Efficiency ◽  
Gum Arabic ◽  
Saline Environment ◽  
X Ray ◽  
Co2 Partial Pressure ◽  
Corrosion Inhibition Efficiency

The effect of CO2 partial pressure on the corrosion inhibition efficiency of gum arabic (GA) on the N80 carbon steel pipeline in a CO2-water saline environment was studied by using gravimetric and electrochemical measurements at different CO2 partial pressures (e.g., PCO2 = 1, 20 and 40 bar) and temperatures (e.g., 25 and 60 °C). The results showed that the inhibitor efficiency increased with an increase in inhibitor concentration and CO2 partial pressure. The corrosion inhibition efficiency was found to be 84.53% and 75.41% after 24 and 168 h of immersion at PCO2 = 40 bar, respectively. The surface was further evaluated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), grazing incidence X-ray diffraction (GIXRD), and X-ray photoelectron spectroscopy (XPS) measurements. The SEM-EDS and GIXRD measurements reveal that the surface of the metal was found to be strongly affected by the presence of the inhibitor and CO2 partial pressure. In the presence of GA, the protective layer on the metal surface becomes more compact with increasing the CO2 partial pressure. The XPS measurements provided direct evidence of the adsorption of GA molecules on the carbon steel surface and corroborated the gravimetric results.

Electrochemical Behavior ofSerratia marcescensACE2 on Carbon Steel API 5L-X60 in Organic/Aqueous Phase

2008 ◽  
Vol 47 (18) ◽  
pp. 6925-6932 ◽  
Author(s):  
Aruliah Rajasekar ◽  
Sundaram Maruthamuthu ◽  
Yen-Peng Ting
Keyword(s):  
Carbon Steel ◽  
Aqueous Phase ◽  
Electrochemical Behavior

Effect of Flow Velocity of Sea Water on Corrosion Rate of Low Carbon Steel

2015 ◽  
Vol 799-800 ◽  
pp. 232-236 ◽  
Author(s):  
Abd Alrahim Al Shikshak ◽  
Abd Alhakem Mansour ◽  
A. Taher
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Flow Velocity ◽  
Sea Water ◽  
Low Carbon Steel ◽  
Rate Data ◽  
Low Carbon ◽  
Solution Composition ◽  
Saline Environment ◽  
Very High

The purpose of this research is to investigate the corrosion rate of low carbon steel in saline environment. The influence of variety of conditions that represent the actual conditions in practice such as the flow velocity and solution composition, particularly Na+, Cl-and SO4-2, content were performed. Weight loss test of low carbon steel in the lab was conducted to determine the corrosion rate data in stagnant and flowing seawater for comparison to investigate the effect of flow velocity of sea water on the corrosion behavior of the low carbon steel. Results show that the corrosion rate of low carbon steel is increased by increasing the flow of seawater, but at very high velocities the corrosion rate was recorded to be decreased. XRD results show that the corrosion products contain both Fe2O3and FeO(OH).

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