کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7841622 | 1506503 | 2018 | 38 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Minified dose of urispas drug as better corrosion constraint for soft steel in sulphuric acid solution
ترجمه فارسی عنوان
دوز منحصر به فرد از داروهای اروسپاس به عنوان محدودیت خوردگی بهتر برای فولاد نرم در محلول اسید سولفوریک
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کلمات کلیدی
خوردگی، دارو، فولاد خفیف، قطبش، ایزوترم جذب،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
Corrosion protective performance of commercial mild steel (soft steel) by urispas drug was evaluated by gravimetric measurements, potentiostatic polarization and electrochemical impedance spectroscopy in 1â¯M H2SO4 solution. The results indicate that urispas acts as quite a good corrosion constraint for mild steel exhibiting 97.85% inhibition efficiency at 150â¯ppm of the drug at 303â¯K on polarizing it electrochemically which is a quite minified amount of urispas. Weight loss study also shows that inhibition efficiency gets optimized at 150â¯ppm of the drug molecule at lower temperature. Polarization curves depict that the drug acts as a mixed type inhibitor. The results of electrochemical impedance spectroscopy (EIS) indicate that the charge transfer phenomenon controlled the corrosion reaction. The morphological behavior of the uncorroded and corroded coupons was investigated by scanning electron microscopy and atomic force microscopy studies. The mechanism of adsorption from the variation of inhibition effectiveness with kinetic and activation parameter through Langmuir, Freundlich, Frumkin and Flory-Huggins isotherm, put forward a significant physiochemical mode of interaction of the drug on the metal surface. The outcomes obtained from all the experimental techniques and the information obtained via molecular dynamics (MD) and density functional theory (DFT) evaluation are in good correlation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 269, 1 November 2018, Pages 371-380
Journal: Journal of Molecular Liquids - Volume 269, 1 November 2018, Pages 371-380
نویسندگان
Nisha Saini, Rajeev Kumar, Hssane Lgaz, Rachid Salghi, Ill-Min Chung, Sumit Kumar, Suman Lata,