کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9567493 | 1503717 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical behaviour of brass in artificial seawater: effect of organic inhibitors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The electrochemical behaviour of brass was studied in artificial seawater with two organic inhibitors namely N,N-dibenzotriazol-1-ylmethylaminomethane (DBMM) and 3-hydroxypropyl benzotriazole (HPBT) using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), cyclic voltammetry and current transient techniques. Preliminary screening of the inhibition efficiency (IE) was carried out using weight-loss measurements. Polarization measurements showed that the organic compounds investigated are mixed type inhibitors, inhibiting the corrosion of brass by blocking the active sites of the metal surface. Changes in the impedance parameters (charge transfer resistance (Rct) and double layer capacitance (Cdl)) are related to adsorption of organic inhibitors on the metal surface, leading to the formation of a protective film, which grows with increasing exposure time. Cyclic voltammetric studies confirmed that the addition of inhibitors effectively inhibits the anodic dissolution of brass in artificial seawater.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 241, Issues 3â4, 15 March 2005, Pages 449-458
Journal: Applied Surface Science - Volume 241, Issues 3â4, 15 March 2005, Pages 449-458
نویسندگان
R. Ravichandran, N. Rajendran,