Surface protection of X80 steel using Epimedium extract and its iodide-modified composites in simulated acid wash solution: a greener approach towards corrosion inhibition

2019 ◽  
Vol 43 (22) ◽  
pp. 8527-8538 ◽  
Author(s):  
Ambrish Singh ◽  
Ekemini B. Ituen ◽  
K. R. Ansari ◽  
D. S. Chauhan ◽  
M. A. Quraishi
Keyword(s):  
Corrosion Inhibition ◽  
Surface Protection ◽  
Wash Solution ◽  
Anticorrosion Additive ◽  
X80 Steel ◽  
Acid Wash

The pure extract of Epimedium (EPM) was investigated as an alternative anticorrosion additive for acid wash and descaling solution simulated using 5% HCl.

scholarly journals Spilanthes acmella Leaves Extract for Corrosion Inhibition in Acid Medium

Coatings ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 106
Author(s):  
Akbar Ali Samsath Begum ◽  
Raja Mohamed Abdul Vahith ◽  
Vijay Kotra ◽  
Mohammed Rafi Shaik ◽  
Abdelatty Abdelgawad ◽  
...  
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Active Sites ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Film Formation ◽  
Protective Film ◽  
Surface Protection ◽  
Tafel Polarization ◽  
Spilanthes Acmella

In the present study, the corrosion inhibition effect of Spilanthes acmella aqueous leaves extract (SA-LE) on mild steel was investigated in 1.0 M HCl solution at different temperature using weight loss, Tafel polarization, linear polarization resistance (LPR), and electrochemical impedance (EIS) measurements. Adsorption of inhibitor on the surface of the mild steel obeyed both Langmuir and Temkin adsorption isotherms. The thermodynamic and kinetic parameters were also calculated to determine the mechanism of corrosion inhibition. The inhibition efficiency was found to increase with an increase in the inhibitor concentration i.e., Spilanthes acmella aqueous leaves extract, however, the inhibition efficiency decreased with an increase in the temperature. The phytochemical constituents with functional groups including electronegative hetero atoms such as N, O, and S in the extract adsorbed on the metal surface are found responsible for the effective performance of the inhibitor, which was confirmed by Fourier-transform infrared spectroscopy (FT-IR) and ultraviolet–visible spectroscopic (UV-Vis) studies. Protective film formation against corrosion was confirmed by scanning electron microscopy (SEM), atomic force microscopy (AFM), and contact angle studies. The result shows that the leaves extract acts as corrosion inhibitor and is able to promote surface protection by blocking active sites on the metal.

An induced corrosion inhibition of X80 steel by using marine bacterium Marinobacter salsuginis

2020 ◽  
Vol 189 ◽  
pp. 110858 ◽  
Author(s):  
M. Saleem Khan ◽  
Chunguang Yang ◽  
Ying Zhao ◽  
Haobo Pan ◽  
Jinlong Zhao ◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Marine Bacterium ◽  
X80 Steel

Copper surface protection by organothiol self-assembled monolayers

2015 ◽  
Vol 1746 ◽  
Author(s):  
Sira Suren ◽  
Supattra Haokratoke ◽  
Soorathep Kheawhom
Keyword(s):  
Corrosion Inhibition ◽  
Coating Layer ◽  
Copper Surface ◽  
Self Assembled Monolayers ◽  
Oxygen Plasma Treatment ◽  
Water Contact ◽  
Surface Protection ◽  
Assembled Monolayers ◽  
Forming Temperature ◽  
Self Assembled

ABSTRACTThis work investigates the effects of concentration of organothiol molecules and temperature used during self-assembled monolayers (SAMs) formation on quality of the organothiol SAMs coating layer obtained in terms of wettability, corrosion inhibition efficiency and carbon to copper ratio. The organothiol SAMs were coated on copper substrates prepared by electro-polishing followed by oxygen plasma treatment for 15 s. Three types of organothiol SAMs including 1-octanethiol (OTT), 2-ethylhexanethiol (2-EHT) and 2-phenylethanethiol (2-PET) were investigated. Concentration of organothiol molecules ranging from 0.005 to 0.02 M in isopropanol and forming temperature ranging from -15 to 50°C were studied. It was found that all organothiol SAMs of 0.01 M provided the SAMs coating layer with the highest quality. The SAMs formed at 40°C with OTT and 2-EHT, and at 0°C with 2-PET were the most favorable condition with the highest water contact angle of 124.79o, 130.66o and 120.58o at corrosion inhibition efficiencies of 96.24%, 99.37% and 98.90%, respectively.

scholarly journals Green synthesis and anticorrosion effect of Allium cepa peels extract-silver nanoparticles composite in simulated oilfield pickling solution

2021 ◽  
Vol 3 (6) ◽  
Author(s):  
Ekemini Ituen ◽  
Ambrish Singh ◽  
Lin Yuanhua ◽  
Onyewuchi Akaranta
Keyword(s):  
Silver Nanoparticles ◽  
Allium Cepa ◽  
Crude Extract ◽  
Steel Corrosion ◽  
Face Centered Cubic ◽  
Surface Protection ◽  
Green Approach ◽  
Anticorrosion Additive ◽  
Ethanol Extracts ◽  
Industrial Cleaning

AbstractAn alternative green approach through which nanoscience/nanotechnology could be applied in the industry is being demonstrated in this study. Ethanol extracts of Allium cepa peels (Et-ACPE) is used to mediate the synthesis of silver nanoparticles (Et-AgNPs) at room temperature. Stable crystalline, monodisperse and non-agglomerated spherical NPs with zeta potential of −46.2 ± 0.1 mV and plasmon absorption at 435 nm are obtained. Silver atoms are predominantly oriented towards the Ag (111) plane in a face centered cubic structure with a = b = c = 4.0968 Å having $$\alpha = \beta = \gamma = 90^\circ$$ α = β = γ = 90 ∘ . The surfaces of the NPs becomes rich in electron cloud due to O atoms supplied by capped phyto-compounds of Et-ACPE. This enhances adsorption potential and more efficient inhibition (up to 90% at 30 °C) of X80 steel corrosion in 1 M HCl solution than using the crude extract. Investigation of corrosion products and morphologies of the steel surface by FTIR, SEM/EDS and AFM techniques reveals efficient surface protection through adsorption of Et-AgNPs facilitated mainly by O and –C = C– sites. Findings prove that the Et-AgNPs is a more efficient and thermally stable alternative ecofriendly anticorrosion additive for industrial cleaning and pickling operations than the crude extract.

scholarly journals Orange Peel Extract Mediated Silver Nanofluid as Corrosion Inhibitor for X80 Steel in Simulated Oilfield Scale Dissolver

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Ekemini Ituen ◽  
Chukwudurom Dim ◽  
Ekerete BoEKOM
Keyword(s):  
Orange Peel ◽  
Spherical Shape ◽  
Reduction Reaction ◽  
Weight Loss Measurement ◽  
Anticorrosion Additive ◽  
Dissolver Solution ◽  
X80 Steel ◽  
Orange Peel Extract ◽  
Peel Extract ◽  
Microscopic Techniques

Silver nanofluid was prepared by bio-reduction reaction between orange peels extracts (OPE) and silver nitrate and characterized by spectroscopic and microscopic techniques. Colloidal nanoparticles of sizes between 40 – 50 nm and spherical shape were obtained. The nanofluid was applied as anticorrosion additive to inhibit corrosion of X80 steel in simulated oilfield scale dissolver solution (1.0 M HCl) at various temperatures. The nanofluid (OPE-AgNPs) was 98.9 % and 84.3 % efficient at 30 ºC and 60 oC respectively as determined by weight loss measurement. In comparison with OPE, OPE-AgNPs shows better corrosion inhibition and higher resistance to thermal degradation. Some kinetic and thermodynamic models were used to characterize the inhibition process. OPE-AgNPs could be optimized and used as alternative anticorrosion additive for scale dissolution liquor in the industry.

Corrosion Inhibition of X80 Steel in Simulated Marine Environment with Marinobacter aquaeolei

2019 ◽  
Vol 32 (11) ◽  
pp. 1373-1384 ◽  
Author(s):  
M. Saleem Khan ◽  
Dake Xu ◽  
Dan Liu ◽  
Yassir Lekbach ◽  
Ke Yang ◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Marine Environment ◽  
Marinobacter Aquaeolei ◽  
X80 Steel
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