Evaluation of corrosion behaviour on Mn-Cr austenitic steels using ۰.۱ M HCl solution
عنوان مقاله: Evaluation of corrosion behaviour on Mn-Cr austenitic steels using ۰.۱ M HCl solution
شناسه ملی مقاله: JR_JMATPR-2-1_007
منتشر شده در در سال 1393
شناسه ملی مقاله: JR_JMATPR-2-1_007
منتشر شده در در سال 1393
مشخصات نویسندگان مقاله:
Arash Fattah-alhosseini - Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran.
B. Izadi - Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran.
M. Asadi Asadabad - Materials Research School, Nuclear Science and Technology Research Institute, Isfahan, Iran.
خلاصه مقاله:
Arash Fattah-alhosseini - Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran.
B. Izadi - Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran.
M. Asadi Asadabad - Materials Research School, Nuclear Science and Technology Research Institute, Isfahan, Iran.
One of the attractive low activation steels is the austenitic Mn-Cr steel from the view point of waste disposal because of few long-lived nuclides. In this paper, three types of Mn-Cr austenitic steels were fabricated by vacuum induction furnace. Then plates with ۱۰ mm thickness were fabricated by hot-rolling. The physical metallurgy of these steels was studied by the corrected Schaeffler diagram, X-ray and electron diffraction patterns. The corrected Schaeffler diagram and X-ray diffraction (XRD) results have shown that the matrix of these steels is a single γ-phase structure. Also, the corrosion behaviour in ۰.۱M HCl solution was evaluated by open-circuit potential, Tafel polarization, and electrochemical impedance spectroscopy (EIS). The results of Tafel polarization experiments show corrosion current density of all three Cr-Mn steels is in the range of ۱۰-۴ A cm-۲ which indicates their appropriate resistance in this acidic environment. The Nyquist plots showed that polarization resistance from the first to third Cr-Mn steels decreases. This trend is due to increase in corrosion current density which corresponds to Tafel polarization curves.
کلمات کلیدی: Cr-Mn steel, EIS, Acid corrosion
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1282662/