کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10275962 | 463411 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Voltammetry and surface analysis of AISI 316 stainless steel in chloride-containing simulated concrete pore environment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The study of passive layers grown on AISI 316 stainless steel in solutions that simulate concrete pore environments contaminated with Clâ is presented. Model solutions of saturated Ca(OH)2 and cement extract (CE) with and without the addition of 5Â g/L of NaCl are compared. Cyclic voltammetry (CV) shows different electrochemical responses of passive layers grown on samples immersed in these solutions under open circuit potential (ocp). A more resistive passive film was found on the samples exposed to the CE solution. The different voltammetric responses suggest differences in composition of the passive layers formed on each solution. XPS spectra confirm the dissimilarity in atomic composition. Optical microscope images and AFM images of the pits formed on the samples illustrate the differences of AISI 316 surface topography after exposure to model solutions. Because of these differences, it is recommended to use CE solution as a model solution and ocp passivation to simulate concrete environments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 578, Issue 1, 15 April 2005, Pages 45-53
Journal: Journal of Electroanalytical Chemistry - Volume 578, Issue 1, 15 April 2005, Pages 45-53
نویسندگان
Lucien Veleva, Mario A. Alpuche-Aviles, Melissa K. Graves-Brook, David O. Wipf,