Potentiodynamic polarization, surface analyses and computational studies of a 1,3,4-thiadiazole compound as a corrosion inhibitor for Iraqi kerosene tanks

Yaqo, Eva Adel; Anaee, Rana A.; Abdulmajeed, Majid H.; Tomi, Ivan Hameed R.; Kadhim, Mustafa M.

doi:10.1016/j.molstruc.2019.127356

Cited by 23 publications

(9 citation statements)

References 56 publications

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“…The measured data is listed in Table 2. Moreover, the corrosion rates were calculated considering the whole surface of API X120 steel is attacked by the aggressive media without any localized corrosion 44 .…”

Section: Resultsmentioning

confidence: 99%

Electrochemical and thermodynamic study on the corrosion performance of API X120 steel in 3.5% NaCl solution

Shahzad

Sliem

Shakoor

et al. 2020

Sci Rep

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The present work studied the effect of temperature on the corrosion behavior of API X120 steel in a saline solution saturated with co 2 in absence and presence of polyethyleneimine (pei) as an environmentally safe green inhibitor. The effect of PEI on the corrosion behavior of API X120 steel was investigated using destructive and non-destructive electrochemical techniques. The overall results revealed that PEI significantly decreases the corrosion rate of API X120 steel with inhibition efficiency of 94% at a concentration of 100 μmol L −1. The adsorption isotherm, activation energy and the thermodynamic parameters were deduced from the electrochemical results. It is revealed that the adsorption of PEI on API X120 steel surface follows Langmuir adsorption isotherm adopting a Physichemisorption mechanism. Finally, the samples were characterized using scanning electron microscopy (SEM) and atomic force microscopy (AFM) techniques to elucidate the effect of aggressiveness of corrosive media on the surface morphology and the corrosion performance of API X120 steel. The surface topography result indicates that the API X120 steel interface in PEI presence is smoother than co 2 with cl − ions or cl − ions only. This is attributed to the compact protective film limits the aggressive ions transfer towards the metallic surface and reduces the corrosion rate. Moreover, PEI inhibition mechanism is based on its co 2 capturing ability and the PEI adsorption on the steel surface beside the siderite layer which give the PEI molecules the ability to reduce the scale formation and increase the corrosion protection due to capturing the CO 2 from the brine solution. High strength low alloy (HSLA) steels are widely finding its applications in oil & gas industry, thermal power plants and in aerospace industry etc. due to its improved mechanical properties, superior corrosion resistance and weldability when compared with plain carbon steel 1-4. Series of comparative studies have been focused on HSLA pipelines steels in order to understand the effect of alloying elements, heat treatments and other changeable factors on their mechanical properties and microstructure 5-8. it has been reported that the yield strength of the API X120 steel is in range 780-951 MPa based on the shape of the specimen. Moreover, the tensile strength is varied from 940 to 1023 MPa and the strength is more than X120 ksi and reaches to X120 grade according to the API standards 9-11. Corrosion is the major problem that compact the API X120 steel pipelines in the transportation of oil, gas. There are a myriad number of studies that investigate the influence of carbon dioxide with saline solution on the corrosion mechanism of different grades of steel pipelines employed in the pipeline applications 12,13. Additionally, it has been reported that the presence of carbonate ions in oilfield brine solution increases the corrosion rate of the pipelines 14-16. Several parameters have been noted for the corrosion of steel in CO 2 environment such as PH, temperature, CO 2 pres...

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Section: Resultsmentioning

confidence: 99%

Electrochemical and thermodynamic study on the corrosion performance of API X120 steel in 3.5% NaCl solution

Shahzad

Sliem

Shakoor

et al. 2020

Sci Rep

View full text Add to dashboard Cite

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“…Furthermore, the slopes of the cathodic and anodic Tafel lines are approximately constant and independent on the inhibitor concentration. This means that the A.vera gel inhibitors have an effect on the corrosion rate while they do not effect on the metal dissolution mechanism [27,28]. By Comparing between the semicircle radii of the carbon steel in uninhibited solution and these in the presence of different concentrations of Aloe vera gel inhibitor showed that the real axis intercept at low frequencies in the presence of extracted A.Vera gel inhibitor is larger than that in the absence of the Aloe vera gel (blank) and increases with increasing gel inhibitor concentration.…”

Section: Potentiodynamic Polarization Techniquementioning

confidence: 97%

Evaluation of Aloe Vera Gel Extract as Eco-friendly Corrosion Inhibitor for Carbon Steel in 1.0 M HCl

et al. 2021

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The corrosion inhibition of carbon steel in 1.0 M HCl using the Aloes leaves extract has been studied. Three electrochemical different techniques have been utilized for studying the corrosion inhibition efficiency behavior of Aloe vera Gel as green corrosion inhibitor in addition to Scanning electron microscopy-Energy dispersive Xray analysis (SEM-EDX) technique. The four techniques which are potentiodynamic polarization, Electrochemical impedance spectroscopy (EIS), Electrochemical frequency modulation (EFM) and SEM-EDX were used for evaluation at room temperature 25 ᵒ C. The results show a good efficiency with low concentration of inhibitor, where the electrochemical methods show that 52 % efficiency with low concentration 100 ppm, in addition to surface morphology of carbon steel show a protected surface compared with noninhibited specimen due to formation of inhibitor layers on surface. EDX show that more concentration of chemical elements of gel extract chemical components adsorbed on inhibited specimen compared with non-inhibited specimen. The inhibition efficiency increases with the increasing of the aloe vera gel concentration.

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“…The session shows a significant effect increase of the mothers' level of knowledge which plays a significant role in the quality of care providing to children and effective outcomes. (19)(20)(21)(22).…”

Section: Implementation Of Discharge Planmentioning

confidence: 99%

Discharge Plan for Mothers of Children Undergoing Congenital Heart Surgery

Doyle¹,

McKervey²

2022

JBB

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Background: Congenital heart defect is the second cause of death in infancy and childhood and is the leading cause of childhood morbidity and mortality. Congenital heart surgery corrects a heart defect that a child is born with it. Aim:This study aimed at evaluating the effect of discharge plan for mothers and their children undergoing congenital heart surgery. setting: this study was conducted at the outpatient clinic of Cardio Vascular and Thoracic Academy Ain Shams University Hospitals. Sample: 70 mothers and their children undergoing congenital heart surgery were included in this study.Tools of data collection: two different tools were used. First tool: consists of interviewing questionnaire to asssocio-demographicphic characteristics of mothers and their children, knowledge, reported practices of mothers for their children undergoing congenital heart surgery, Second tool: Assessment of child health status.Result: revealed that 81.4% of the studied mothers achieved poor knowledge scores in the pre-implementation phase, it improved to 92.9% of them achieved good in the postimplementation phase. Only 18.6% & 7.1% of them achieved average in both the pre-and post-implementation phase respectively and 91.4% of the study sample total mothers' practice was unsatisfactory in the pre-implementation phase, but 97.1% of them were satisfactory in the post-implementation phase. Conclusion:there was a strong statistically significant correlation between the mother's total knowledge and total reported practices score on the post-test (P<0.00**).Recommendation: Comprehensive, multidisciplinary discharge planning should design early and should include the mothers and children contain education regarding congenital heart surgery care. KE Y W OR D Sdischarge plan of mothers, children with congenital heart surgery.

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Potentiodynamic polarization, surface analyses and computational studies of a 1,3,4-thiadiazole compound as a corrosion inhibitor for Iraqi kerosene tanks

Cited by 23 publications

References 56 publications

Electrochemical and thermodynamic study on the corrosion performance of API X120 steel in 3.5% NaCl solution

Electrochemical and thermodynamic study on the corrosion performance of API X120 steel in 3.5% NaCl solution

Evaluation of Aloe Vera Gel Extract as Eco-friendly Corrosion Inhibitor for Carbon Steel in 1.0 M HCl

Discharge Plan for Mothers of Children Undergoing Congenital Heart Surgery

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