کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5142270 | 1496033 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Piper longum extract as green corrosion inhibitor for aluminium in NaOH solution
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The inhibiting action of Piper longum seed extracts was investigated as the corrosion inhibitors of aluminium in 1Â M NaOH solution using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) methods, and weight loss measurements. The results revealed that P. longum extract was an effective inhibitor, and the inhibition efficiencies obtained from polarization and weight loss experiments were in good agreement. Using the potentiodynamic polarization technique, the extract was proving to have a mixed-type character for aluminium in alkaline solution by suppressing both anodic and cathodic reactions on the metal surface. The adsorption isotherm model was determined according to fitted results obtained from the weight loss experiments performed on the aluminium specimen in 1Â M NaOH solution at 308Â K. Thermodynamic parameters such as activation energy and free energy of adsorption were calculated and given in kJÂ mgâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Arabian Journal of Chemistry - Volume 9, Supplement 2, November 2016, Pages S1584-S1589
Journal: Arabian Journal of Chemistry - Volume 9, Supplement 2, November 2016, Pages S1584-S1589
نویسندگان
Ambrish Singh, Ishtiaque Ahamad, Mumtaz A. Quraishi,