کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1599415 | 1005095 | 2008 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Crevice corrosion behavior of X70 steel in HCOâ3 solution under cathodic polarization
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Crevice corrosion behavior of X70 steel in HCOâ3 solution under cathodic polarization Crevice corrosion behavior of X70 steel in HCOâ3 solution under cathodic polarization](/preview/png/1599415.png)
چکیده انگلیسی
The crevice corrosion behavior of X70 steel was investigated with a wedge-shaped crevice assembly under â1000 mV (SCE) cathodic polarization in the solutions with various HCOâ3 concentrations. The potential, current, pH and the oxygen content within the crevice were measured with or without outside coupled specimen. The results indicated that the polarization potential of X70 steel in the crevice dropped with the increase of time under the cathodic polarization. There was a remarkable influence of HCOâ3 concentration on the potential of X70 steel in the crevice. When HCOâ3 concentration was up to 0.125%, the surface of the metal was covered with the corrosion products that resulted in the polarization extent of X70 steel decreased. The pH value in the crevice rose and it dropped gradually from the crevice mouth to the bottom under the cathodic polarization. With the increasing of HCOâ3 concentration, the hydrolyzation reaction of metal in the crevice bottom aggravated. Most of the dissolved oxygen in the crevice was consumed by the cathodic current. The maximum cathodic current on the metal surface was at the crevice mouth and it was much more than that at the crevice bottom.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Metallurgica Sinica (English Letters) - Volume 21, Issue 4, August 2008, Pages 235-244
Journal: Acta Metallurgica Sinica (English Letters) - Volume 21, Issue 4, August 2008, Pages 235-244
نویسندگان
C.W. Du, X.G. Li, X. Chen, P. Liang, H. Guo,