کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10628540 | 990388 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Protective properties of hexacyanoferrate containing polypyrrole films on stainless steel
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The protective properties of polypyrrole coatings containing hexacyanoferrate anions are presented. The composite coatings were electrodeposited galvanostatically on stainless steel from the aqueous solutions containing pyrrole monomer and potassium hexacyanoferrate(II) together with traces (10 μmol dmâ3) of free CNâ ions. The protective properties of the resulting coatings were investigated in the highly aggressive medium of 0.1 mol dmâ3 HCl and 0.4 mol dmâ3 NaCl. Diagnostic experiments included measurements of open circuit potential with time of exposure, chronoamperometric (current-time) examination of the steel samples at a selected constant potential of 0.5 V and potentiodynamic measurements. To get insight into the dynamics of the steel dissolution at open circuit potential and at the selected anodic potential, changes of concentrations of iron and chromium in the test solution as a function of exposure time were determined using atomic absorption spectrometry. Morphology of the composite film was examined using scanning electron microscopy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 47, Issue 3, March 2005, Pages 771-783
Journal: Corrosion Science - Volume 47, Issue 3, March 2005, Pages 771-783
نویسندگان
Marcin A. Malik, Renata WÅodarczyk, Pawel J. Kulesza, Henryk Bala, Krzysztof Miecznikowski,