scholarly journals Electrochemical and Quantum Chemical Assessment of Some Thiosemicarbazide Derivatives as Carbon Steel Corrosion Inhibitors in HCl; Continuously Monitoring the Current Change by FFT Voltammetry

2017 ◽  
pp. 2628-2646 ◽  
Author(s):  
Shirin Shahabi ◽  
Keyword(s):  
Carbon Steel ◽  
Quantum Chemical ◽  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Current Change ◽  
Chemical Assessment ◽  
Thiosemicarbazide Derivatives

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

scholarly journals Mechanism and inhibition efficiency of biomass Tetraselmis chuii sp. on carbon steel corrosion in the environment under the conditions of oil wells

Al-Kimia ◽  
2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Yayan - Sunarya ◽  
Heli Siti H ◽  
Munawaroh Munawaroh ◽  
Gun Gun Gumilar
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Protective Layer ◽  
Steel Corrosion ◽  
Marine Microorganisms ◽  
Tetraselmis Chuii ◽  
Mechanism Of Inhibition ◽  
Biomass Extract ◽  
Inhibition Ability

Corrosion control on petroleum pipe wells can only be done through the addition of corrosion inhibitors. In this study, the corrosion inhibitors studied were sourced from marine microorganisms, namely the type of microalgae Tetraselmis chuii sp. The aim to be achieved in this study was to determine the mechanism and efficiency of inhibition of the extraction of microalgae biomass in corrosion of carbon steel in an environment of petroleum conditions. To achieve this goal, a potentiodynamic polarization method (Tafel extrapolation) was used and the Electrochemistry Impedance Spectroscopy (EIS) method used the galvanostat-potentiostat device (Voltalab 40, PGZ 301). The results obtained from this study indicate that API 5L X65 carbon steel in the petroleum environment is very significantly corroded, caused by acidic media derived from acetic acid and dissolved CO2. The inhibition ability of the Tetraselmis chuii sp. Biomass extract. in line with the increasing extraction concentration reaching optimum at a concentration of 250 ppm with inhibition efficiency reaching 70%. The mechanism of inhibition takes place through the formation of a protective layer adsorbed on the surface of carbon steel. The protective membrane formed is uneven and tends to be porous.

CORROSION INHIBITION BEHAVIOR OF BENZOTHIAZINE DERIVATIVE ON LOW CARBON STEEL IN ACID MEDIUM: ADSORPTION AND QUANTUM CHEMICAL INVESTIGATIONS

2019 ◽  
Vol 26 (10) ◽  
pp. 1950066 ◽  
Author(s):  
VENKATESAN HEMAPRIYA ◽  
ILL-MIN CHUNG ◽  
KANDASAMY PARAMESWARI ◽  
SUBRAMANIAN CHITRA ◽  
SEUNG-HYUN KIM ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Quantum Chemical ◽  
Density Functional ◽  
Low Carbon Steel ◽  
Steel Corrosion ◽  
Dft Method ◽  
Protective Film ◽  
Low Carbon ◽  
Carbon Steel Surface ◽  
Layer Adsorption

The inhibitive performance of 2-[(5-phenyl-1,3,4-oxdiazol-2-yl)methyl]-2H-benzo[b] [1,4] thiazin-3-one (POBT) for low carbon steel corrosion in 1 M H2SO4 has been evaluated by non-electrochrmical, and electrochemical measurements. Efficiency of the inhibitor enhanced with inhibitor concentration and declined with rise in temperature. 92.39% inhibition efficiency was attained using 0.1[Formula: see text]mM of POBT. Anticorrosive effect of the inhibitor is owing to the adsorption of POBT molecules on the metal surface. Mono layer adsorption of inhibitor was favored by observing the best fit with Langmuir isotherm. Polarization measurements reveal that the inhibitor behaves as mixed type. Surface analysis by scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDX) confirm the existence of a protective film of POBT on low carbon steel surface. Quantum chemical parameters obtained using density functional theory (DFT) method complements the above results.

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