Green anticorrosive oilfield chemicals from 5-hydroxytryptophan and synergistic additives for X80 steel surface protection in acidic well treatment fluids

2016 ◽  
Vol 224 ◽  
pp. 408-419 ◽  
Author(s):  
Ekemini Ituen ◽  
Onyewuchi Akaranta ◽  
Abosede James
Keyword(s):  
Steel Surface ◽  
Surface Protection ◽  
X80 Steel ◽  
Oilfield Chemicals

scholarly journals Surface Protection of Steel by Adsorption of Milletia Pinnata Extract

2016 ◽  
Vol 13 (2) ◽  
pp. 101-105
Author(s):  
Monikandon Sukumaran ◽  
Kesavan Devarayan
Keyword(s):  
Weight Loss ◽  
Steel Surface ◽  
Inhibition Efficiency ◽  
Physical Adsorption ◽  
Ethanolic Extract ◽  
Steel Corrosion ◽  
Langmuir Adsorption Isotherm ◽  
Surface Protection ◽  
Langmuir Adsorption ◽  
Thermochemical Parameters

Steel corrosion inhibition in acidic and alkaline medium by ethanolic extract of Milletia pinnata is described in this study. The inhibitive behavior of the inhibitor is evaluated by weight loss measurements, adsorption isotherms, and thermochemical parameters. The inhibitor exhibited a maximum of 87% and 90.5% inhibition efficiency against steel corrosion in 0.5 M NaOH and 1.0 M H2SO4, respectively. The weight loss linearly fit to Langmuir adsorption isotherm with correlation coefficient value close to unity. The thermochemical parameters indicated for predominant physical adsorption of the inhibitor molecules on the steel surface.

Energy storage and surface protection properties of dianiline co-polymers

RSC Advances ◽  
2015 ◽  
Vol 5 (129) ◽  
pp. 106523-106535 ◽  
Author(s):  
Apparao Thota ◽  
Ravi Arukula ◽  
Ramanuj Narayan ◽  
Chepuri R. K. Rao ◽  
K. V. S. N. Raju
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Energy Storage ◽  
Phosphoric Acid ◽  
Steel Surface ◽  
Substituted Anilines ◽  
High Corrosion Resistance ◽  
Surface Protection ◽  
High Corrosion

Phosphoric acid doped co-polyanilines of substituted anilines and dianiline give conductivities up to 9.25 × 10−2 S cm−1, specific capacitances on a stainless steel capacitor of 110–176.76 F g−1 at 0.5 A g−1 and have high corrosion resistance on a steel surface.

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.

Investigation of hydrogen concentration and hydrogen damage on API X80 steel surface under cathodic overprotection

2017 ◽  
Vol 42 (50) ◽  
pp. 29888-29896 ◽  
Author(s):  
Lei Zhang ◽  
Hongjie Shen ◽  
Kuangda Lu ◽  
Wenhai Cao ◽  
Yanni Sun ◽  
...  
Keyword(s):  
Hydrogen Concentration ◽  
Steel Surface ◽  
Hydrogen Damage ◽  
X80 Steel

scholarly journals Steel surface protection with coatings based on polyurethane and silicon organic compounds

2020 ◽  
Vol 64 (1) ◽  
pp. 50-54
Author(s):  
A. E. Salamianski ◽  
V. E. Agabekov ◽  
I. G. Chishankov ◽  
Yu. V. Matveenko ◽  
G. B. Melnikova ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Steel Surface ◽  
Surface Protection

EELS characterization of “Smut” layer films on steel surface prepared for chrome plating by anodic etching

1995 ◽  
Vol 53 ◽  
pp. 538-539
Author(s):  
E Y. Wang ◽  
J. T. Cherian ◽  
A. Madsen ◽  
R. M. Fisher
Keyword(s):  
Steel Surface ◽  
Surface Preparation ◽  
Treatment Method ◽  
Chrome Plating ◽  
Transmission Electron ◽  
Alloy Steels ◽  
Pre Treatment ◽  
Hard Chrome ◽  
Electron Energy Loss

Many steel parts are electro-plated with chromium to protect them against corrosion and to improve their wear-resistance. Good adhesion of the chrome plate to the steel surface, which is essential for long term durability of the part, is extremely dependent on surface preparation prior to plating. Recently, McDonnell Douglas developed a new pre-treatment method for chrome plating in which the steel is anodically etched in a sulfuric acid and hydrofluoric acid solution. On carbon steel surfaces, this anodic pre-treatment produces a dark, loosely adhering material that is commonly called the “smut” layer. On stainless steels and nickel alloys, the surface is only darkened by the anodic pre-treatment and little residue is produced. Anodic pre-treatment prior to hard chrome plating results in much better adherence to both carbon and alloy steels.We have characterized the anodic pre-treated steel surface and the resulting “smut” layer using various techniques including electron spectroscopy for chemical analysis (ESCA) on bulk samples and transmission electron microscopy (TEM) and electron energy-loss spectroscopy (EELS) on stripped films.

Specificity of Lectins Labeled with Colloidal Gold to the Exopolymeric Matrix Carbohydrates of the Sulfate-Reducing Bacteria Biofilm Formed on Steel

2020 ◽  
Vol 82 (5) ◽  
pp. 11-20
Author(s):  
D.R. Abdulina ◽  
◽  
L.M. Purish ◽  
G.O. Iutynska ◽  
◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Colloidal Gold ◽  
Steel Surface ◽  
Lectin Binding ◽  
Sulfate Reducing Bacteria ◽  
Gold Particles ◽  
Sulfate Reducing ◽  
Transmission Electron ◽  
Reducing Bacteria

The studies of the carbohydrate composition of the sulfate-reducing bacteria (SRB) biofilms formed on the steel surface, which are a factor of microbial corrosion, are significant. Since exopolymers synthesized by bacteria could activate corrosive processes. The aim of the study was to investigate the specificity of commercial lectins, labeled with colloidal gold to carbohydrates in the biofilm exopolymeric matrix produced by the corrosive-relevant SRB strains from man-caused ecotopes. Methods. Microbiological methods (obtaining of the SRB biofilms during cultivation in liquid Postgate B media under microaerophilic conditions), biochemical methods (lectin-binding analysis of 10 commercial lectins, labeled with colloidal gold), transmission electron microscopy using JEM-1400 JEOL. Results. It was shown using transmission electron microscopy that the binding of lectins with carbohydrates in the biofilm of the studied SRB strains occurred directly in the exopolymerіс matrix, as well as on the surfaces of bacterial cells, as seen by the presence of colloidal gold particles. For detection of the neutral carbohydrates (D-glucose and D-mannose) in the biofilm of almost all studied bacterial strains PSA lectin was the most specific. This lectin binding in biofilms of Desulfotomaculum sp. К1/3 and Desulfovibrio sp. 10 strains was higher in 90.8% and 94.4%, respectively, then for ConA lectin. The presence of fucose in the SRB biofilms was detected using LABA lectin, that showed specificity to the biofilm EPS of all the studied strains. LBA lectin was the most specific to N-аcetyl-D-galactosamine for determination of amino sugars in the biofilm. The amount of this lectin binding in D. vulgaris DSM644 biofilm was 30.3, 10.1 and 9.3 times higher than SBA, SNA and PNA lectins, respectively. STA, LVA and WGA lectins were used to detect the N-acetyl-Dglucosamine and sialic acid in the biofilm. WGA lectin showed specificity to N-acetyl-D-glucosamine in the biofilm of all the studied SRB; maximum number of bounded colloidal gold particles (175 particles/μm2) was found in the Desulfotomaculum sp. TC3 biofilm. STA lectin was interacted most actively with N-acetyl-D-glucosamine in Desulfotomaculum sp. TC3 and Desulfomicrobium sp. TC4 biofilms. The number of bounded colloidal gold particles was in 9.2 and 7.4 times higher, respectively, than using LVA lectin. The lowest binding of colloidal gold particles was observed for LVA lectin. Conclusions. It was identified the individual specificity of the 10 commercial lectins to the carbohydrates of biofilm matrix on the steel surface, produced by SRB. It was estimated that lectins with identical carbohydrates specificity had variation in binding to the biofilm carbohydrates of different SRB strains. Establishing of the lectin range selected for each culture lead to the reduction of the scope of studies and labor time in the researching of the peculiarities of exopolymeric matrix composition of biofilms formed by corrosiverelevant SRB.

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