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; Abstract: A new type of lead-based porous anode in zinc electrowinning was prepared by negative pressure infiltration. The anodic polarization potential and corrosion rate were studied and compared with those of traditional flat anodes (Pb-0.8%Ag) used in industry. The anode corrosion rate was determined by anode actual current density and microstructure. The results show that the anodic oxygen......
Cerium-tannic acid passivation treatment on galvanized steelLIU Guangminga, YU Feib, YANG Liua, TIAN Jihonga, and DU Nana a Key Laboratory of Nondestructive Testing (Nanchang Hangkong University...="ChDivSummary">A novel cerium-tannic acid passivation treatment was performed on galvanized steel. The corrosion resistance of cerium-tannic passivated samples was tested by dropping test with 0.5 wt.% CuSO4......
Effect of impurities in recycling water on Pb-Ag anode passivation in zinc electrowinning process LIU Hui1, WANG Yun-yan1, CHAI Li-yuan1, XIAO Hai-juan1, 2, PEI Fei1, SHU Yu-de1 1. School... 12 December 2010 Abstract: Effect of impurities in recycling water on Pb-Ag anode passivation in zinc electrowinning process was investigated by linear scan voltammetry. Results show that passivation......
is obviously hindered. This may mainly attribute to the catalytic effect of arsenopyrite on the thiosulfate decomposition and the formation of passivation layer on the gold foil surface. The passivation... leaching; thiosulfate; arsenopyrite; passivation 1 Introduction Thiosulfate has shown considerable promise as an alternative non-cyanide lixiviant due to the increasing awareness of environment [1......
Passivation method of 317L stainless steel used in medicineLin Zhang, Yinshun Wu, Bei Cao, and Baofeng DingMaterials Science and Engineering School, University of Science & Technology of Beijing, Beijing 100083, China摘 要:<正>The electrochemical performance of 317L stainless steel used in medicine under different conditions of passivation......
Surface Passivation Performance of Atomic-Layer-Deposited Al2O3 on p-type Silicon SubstratesYanghui Liu,Liqiang Zhu,Liqiang Guo,Hongliang Zhang,Hui XiaoNingbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences摘 要:Surface passivation performances of Al2O3 layers deposited on p-type Czochralski Si wafers by atomic layer......
Effect of temperature on the passivation behavior of steel rebarShan-meng Chen,Bei Cao,Yin-shun Wu,Ke MaSchool of Materials Science and Engineering,University of Science and Technology Beijing摘 要:Steel rebar normally forms an oxide or rusty skin before it is embedded into concrete and the passivation properties of this skin will be heavily influenced......
be attributed to the detachment of the coating in some areas and the passivation of the substrate. This is in reasonable agreement with the Ir dissolution rate of IrO2 anode during the accelerated... is strengthened. The coating adhesion and rigidity decrease, which affects electrochemical activity of the anode when the content of IrO2 is too high. The electrochemically active surface area is determined......
is largely attributed to the addition of Cr, which can assist in forming an inert film on the corroding surface. To maximize the corrosion-resistant ability of Cr, a thorough study dealing with the passivation... of water molecules onto Cr terraces in acid solutions are investigated using DFT methods.Different models with various surface conditions are applied. Passivation is found to begin in the active region......
Trans. Nonferrous Met. Soc. China 26(2016) 2144-2151 Corrosion and discharge performance of Mg-9%Al-2.5%Pb alloy as anode for seawater activated battery Min DENG, Ri-chu WANG, Yan FENG, Nai-guang...-Pb alloy anode material with low content of Pb, the corrosion and discharge behavior of Mg-9%Al-2.5%Pb (hereafter in mass fraction) alloy were investigated by immersion tests and electrochemical......