کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
179381 459347 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanism of electrochemical corrosion of steel under water drop
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Mechanism of electrochemical corrosion of steel under water drop
چکیده انگلیسی


• Studied the mechanism of electrochemical corrosion of steel under a water drop.
• Characterized the corrosion profile under the water drop.
• Made a micro-electrode to measure potential at the water drop edge and center.
• Measured polarization curves at the edge and center of the water drop.

A home-made micro-electrode technique was used to investigate electrochemical corrosion of steel under a chloride-containing water drop, simulating the corrosion scenario encountered in pipelines transporting diluted bitumen. Potential and potentiodynamic polarization curve measurements were conducted at both edge and the centre of the water drop. Morphological and topographic characterization was performed by an optical microscopy and scanning Kelvin probe. Results demonstrated that corrosion of steel under water drop occurs with separated cathodic and anodic reaction regions. While the anodic reaction primarily occurs at the centre of the water drop, the cathodic reaction occurs dominantly at the water edge. Corrosion product is formed and deposited in between, shown as a typical corrosion product ring.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 35, October 2013, Pages 8–11
نویسندگان
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