کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5410894 1506561 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrochemical studies on the inhibition behavior of copper corrosion in pickling acid using quaternary ammonium salts
ترجمه فارسی عنوان
مطالعات الکتروشیمیایی بر رفتار مهار خوردگی مس در اسید ترشی با استفاده از نمکهای آمونیوم کواترنری
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
The inhibition effect of two quaternary ammonium salts namely: N1,N2-didodecyl-N1,N1,N2,N2-tetramethylethane-1,2-diaminium bromide (I) and N-(2-hydroxyethyl)-N,N-dimethyldodecan-1-aminium bromide (II) on the corrosion of copper in 1 M HNO3 has been investigated by polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. Polarization studies showed that these compounds are mixed-type inhibitors. The inhibition efficiency increases with increasing the inhibitor concentration and the maximum inhibition (93.9% and 90.8%) was obtained in the presence of 1 × 10− 3 M of I and II, respectively. The adsorption of these inhibitors on the copper surface obeys Langmuir isotherm. The results obtained from the different electrochemical techniques were in good agreement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 209, September 2015, Pages 419-427
نویسندگان
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