کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6658982 | 1425527 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical properties of Pb-0.6â¯wt% Ag powder-pressed alloy in sulfuric acid electrolyte containing Clâ/Mn2+ ions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, Pb-0.6â¯wt% Ag powder-pressed alloy was fabricated and used as an insoluble anode for zinc electrowinning. The micromorphology, phase composition and elements distribution of the oxide layer formed on Pb-0.6â¯wt% Ag anode were studied. Additionally, the anodic reaction process, galvanostatic potential and oxygen evolution kinetics in Clâ/Mn2+ ions containing sulfuric acid electrolyte were investigated. Compared with the traditional Pb-0.6â¯wt% Ag cast-rolled alloy, Pb-0.6â¯wt% Ag powder-pressed alloy shows much lower anodic potential, self-corrosion current density, cell voltage and higher exchange current density in the same electrolyte. Due to a thin and uniform MnO2 layer formed on the surface of powder-pressed alloy with the presence of Mn2+ ion in the electrolyte, the powder-pressed alloy presents a stable anodic potential. Consequently, the corrosion of powder-pressed Pb-0.6â¯wt% Ag anode was suppressed and the anode slime was decreased compared with Pb-0.6â¯wt% Ag cast-rolled anode.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 177, May 2018, Pages 218-226
Journal: Hydrometallurgy - Volume 177, May 2018, Pages 218-226
نویسندگان
Shuai Wang, Xiang-yang Zhou, Ma Chi-Yuan, Bo Long, Hui Wang, Jing-Jing Tang, Juan Yang,