Preparation of a biomimetic superhydrophobic ZnO coating on an X90 pipeline steel surface

2015 ◽  
Vol 39 (6) ◽  
pp. 4860-4868 ◽  
Author(s):  
Li Hao ◽  
Yu Sirong ◽  
Han Xiangxiang
Keyword(s):  
Hydrothermal Treatment ◽  
Steel Surface ◽  
Pipeline Steel ◽  
Nano Structures

ZnO coating with upright micro–nano structures was fabricated via electrodeposition and hydrothermal treatment. After it was modified by fluorination, the ZnO coating presented superhydrophobicity with the water CA of 157.59° and the SA was less than 10°.

scholarly journals Effect of Sulfate-Reducing Bacteria (SRB) on the Corrosion of Buried Pipe Steel in Acidic Soil Solution

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 625
Author(s):  
Lijuan Chen ◽  
Bo Wei ◽  
Xianghong Xu
Keyword(s):  
Soil Solution ◽  
Steel Surface ◽  
Pipeline Steel ◽  
Electrochemical Techniques ◽  
Sulfate Reducing Bacteria ◽  
Acidic Soil ◽  
Microbiologically Influenced Corrosion ◽  
Soil Environment ◽  
Sulfate Reducing ◽  
Reducing Bacteria

The influence of sulfate-reducing bacteria (SRB) on the corrosion behaviors of X80 pipeline steel was investigated in a soil environment by electrochemical techniques and surface analysis. It was found that SRB grew well in the acidic soil environment and further attached to the coupon surface, resulting in microbiologically influenced corrosion (MIC) of the steel. The corrosion process of X80 steel was significantly affected by the SRB biofilm on the steel surface. Steel corrosion was inhibited by the highly bioactive SRB biofilm at the early stage of the experiment, while SRB can accelerate the corrosion of steel at the later stage of the experiment. The steel surface suffered severe pitting corrosion in the SRB-containing soil solution.

Colorizing stainless steel surface by femtosecond laser induced micro/nano-structures

2011 ◽  
Vol 257 (17) ◽  
pp. 7771-7777 ◽  
Author(s):  
Md. Shamim Ahsan ◽  
Farid Ahmed ◽  
Yeong Gyu Kim ◽  
Man Seop Lee ◽  
Martin B.G. Jun
Keyword(s):  
Stainless Steel ◽  
Femtosecond Laser ◽  
Steel Surface ◽  
Stainless Steel Surface ◽  
Nano Structures

Electrochemical study on the corrosion rate of X52 steel exposed to different soils

2018 ◽  
Vol 65 (1) ◽  
pp. 97-106 ◽  
Author(s):  
L.M. Quej-Ake ◽  
A. Contreras
Keyword(s):  
Cyclic Voltammetry ◽  
Corrosion Rate ◽  
Steel Surface ◽  
Pipeline Steel ◽  
Corrosion Process ◽  
Saturated Soil ◽  
Saturated Soils ◽  
Content Type ◽  
Ir Drop ◽  
X52 Steel

Purpose The purpose of this work is to study the corrosion rate of X52 pipeline steel exposed to three types of soils collected in Campeche State in México. The electrochemical evaluation for X52 steel exposed to soils ranging from saturated soil until dry conditions was carried out for a period of 21 days. Owing to its versatility to study the steel corrosion process exposed to different types of soils, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and cyclic voltammetry tests were performed. Additionally, optical and electronic microscopy observations of the steel surface were carried out. Design/methodology/approach Electrochemical cell arrangement was described elsewhere (Quej-Ake et al., 2014). Owing to soil being an electrolytic system with high resistivity and impedance, all electrodes were placed as close as possible, and iR-drop compensation was taken into account using two rods of graphite as an auxiliary electrode. In addition, the conductivity of the soil (Rs) obtained from EIS was used to correct the potential of the working electrode according to iR-drop, and an analysis of ohmic drop from the polarization curves was carried out. Findings Saturated conditions of the three soils were initially considered as the most corrosive conditions for X52 steel surface. Finally, 21 days of immersion time was taken into account as the more drastic condition. So, according to results, X52 steel exposed to beach sand was more susceptible to the corrosion process (0.092 mm/year). iR corrected was negligible at low over-potentials region in saturated soils, which is inside the linear region of Tafel or the activation region. In addition, high cathodic peak potential value obtained from cyclic voltammetry for X52 steel exposed to saturated soil may be attributed to hydrogen evolution reaction and neutral pH. Research limitations/implications The paper has implications for research. It bridges the gap between theory and practice. Originality/value Cyclic voltammetry is a really important tool for the electrochemical analysis of the pipeline steel surface exposed to saturated soils, but is not adequate for analysis of steel exposed to dried soils. In addition, the physicochemical results show that fissures, voids and extra-oxygen presence could also affect the electrochemical responses obtained for X52 steel exposed to soils.

Assessment of API pipeline steel surface and its environmental vulnerability

2020 ◽  
Author(s):  
O. S. I. Fayomi ◽  
M. Mashilo ◽  
A. P. I. Popoola ◽  
O. Agboola
Keyword(s):  
Steel Surface ◽  
Pipeline Steel ◽  
Environmental Vulnerability

scholarly journals Use of a Gemini-Surfactant Synthesized from the Mango Seed Oil as a CO2-Corrosion Inhibitor for X-120 Steel

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4206
Author(s):  
E. Sanchez-Salazar ◽  
E. Vazquez-Velez ◽  
J. Uruchurtu ◽  
J. Porcayo-Calderon ◽  
M. Casales ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Steel Surface ◽  
Gemini Surfactant ◽  
Electrochemical Impedance ◽  
Pipeline Steel ◽  
Steel Corrosion ◽  
Co2 Corrosion ◽  
Mango Seed ◽  
Spectroscopy Studies ◽  
Corrosion Of Steel

A gemini surfactant imidazoline type, namely N-(3-(2-fatty-4,5-dihydro-1H-imidazol-1-yl) propyl) fatty amide, has been obtained from the fatty acids contained in the mango seed and used as a CO2 corrosion inhibitor for API X-120 pipeline steel. Employed techniques involved potentiodynamic polarization curves, linear polarization resistance, and electrochemical impedance spectroscopy. These tests were supported by detailed scanning electronic microscopy (SEM) and Raman spectroscopy studies. It was found that obtained gemini surfactant greatly decreases the steel corrosion rate by retarding both anodic and cathodic electrochemical reactions, with an efficiency that increases with an increase in its concentration. Gemini surfactant inhibits the corrosion of steel by the adsorption mechanism, and it is adsorbed on to the steel surface according to a Langmuir model in a chemical type of adsorption. SEM and Raman results shown the presence of the inhibitor on the steel surface.

Corrosion inhibition of API 5L X80 pipeline steel in acidic environment using aqueous extract of Thevetia peruviana

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Corrosion Inhibition ◽  
Aqueous Extract ◽  
Steel Surface ◽  
Pipeline Steel ◽  
Steel Corrosion ◽  
Dependent Manner ◽  
Acidic Environment ◽  
X80 Pipeline Steel ◽  
Concentration Dependent Manner ◽  
Thevetia Peruviana

Aqueous extract of Thevetia peruviana leaves were investigated as corrosion inhibitor for API 5L X80 pipeline steel in 1M H2SO4 solution using electrochemical and gravimetric techniques. The results reveal that T. peruviana inhibited the X80 pipeline steel corrosion in the acid medium in a concentration dependent manner. Potentiodynamic polarization results showed T. peruviana to be a mixed type inhibitor in 1M H2SO4 environment, whereas the impedance results revealed adsorption of the inhibitor species on the steel surface. The gravimetric results reveal that the adsorption mechanism of the inhibitor on the steel surface was chemisorption. The adsorption was in accordance with Freundlich adsorption isotherm and negative standard adsorption energy (Δ𝐺o𝑎𝑑𝑠) obtained inferred that the adsorption was spontaneous and the interaction between the inhibitive molecules was found to be repulsive. Scanning electron microscopy (SEM) confirmed the formation of adsorbed film on the X80 pipeline steel surface. Results revealed that T. peruviana has potential to inhibit the correction and could possibly be used for corrosion inhibition in the acidic environment of steel.

scholarly journals Inhibition of Mild Steel Corrosion in 0.25 M H2SO4 Using Tetracarpidium conophorum Shell Extract

2020 ◽  
pp. 19-24
Author(s):  
N. C. Ngobiri ◽  
K. N. Kikanme
Keyword(s):  
Steel Surface ◽  
Chemical Interaction ◽  
Pipeline Steel ◽  
Steel Corrosion ◽  
Ms Analysis ◽  
Mild Steel Corrosion ◽  
Visible Spectra ◽  
Corrosion Inhibition Efficiency ◽  
Uv Visible ◽  
Phytochemical Components

The capacity of aqueous Tetracarpidium conophorum Shell (TCE) Extract to inhibit pipeline steel corrosion in 0.25 M H2SO4 acid was investigated using weight loss and Uv-visible spectroscopy techniques. The phytochemical components of Tetracarpidium conophorum were identified using GC-MS analysis. The results obtained shows that aqueous Tetracarpidium conophorum shell extract decreased the corrosion rate, while the corrosion inhibition efficiency increased with increase in exatract concentration. The Uv-visible spectra indicated a chemical interaction between the TCE molecules and atoms of Iron on the pipeline steel surface, while GC-MS analysis showed the presence of organic compounds with hetero-atoms for adsorption on the steel surface.

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