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[求助]
所有金币都用来悬赏了，求大神帮忙润色一下摘要，现行谢过了！
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求大神帮忙润色一下摘要，时态语法啥的，我水平有限，实在是发现不了了，我所有金币都用来悬赏了，先行谢过了！ The objective of this work is the study of metallurgical characteristics of different rolling numbers or rolling technology type of Pb-0.06wt% Ca-1.2wt% Sn anodes for copper electrowinning, to determine a relationship between anode properties and rolling technologies or rolling numbers during copper electrowinning. Anodic polarization curves, cyclic voltammetry curves, electrochemical impedance spectrum and corrosion rate were used to investigate the anode process. The composition and structure of the anodic layer were determined by X-ray diffraction and scanning electron microscope analyses. The observable variations in the electrocatalytic activity and reaction kinetics of the anodes during electrolysis indicate the rolling technologies greatly affects the electrochemical behavior of anodes. With increased rolling number, the oxygen evolution overpotential and corrosion rate of anodes mainly exhibited a decreasing trend, which is contrary to the trend of the electrode surface exchange current density. In addition, the intensity of diffraction peak (consist of PbO, PbOX and α-PbO2) mainly exhibited an increasing trend. Cross-rolled anode exhibited a more uniform microstructure, which indicating that the recrystallization occurred during rolling process. |
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The objective of our work is to study the metallurgical characteristics of different rolling numbers or the rolling technology type of Pb-0.06wt% Ca-1.2wt% Sn anodes for copper electrowinning, and determine the relationship between the properties of anodes and rolling technologies or rolling numbers during copper electrowinning. The anode process was investigated via anodic polarization curves, cyclic voltammetry curves, electrochemical impedance spectra and the corrosion rate. The composition and structure of the anodic layer were analyzed by X-ray diffraction and scanning electron microscopy. The observable variations in the electrocatalytic activity and reaction kinetics of the anodes during electrolysis indicate that the electrochemical behavior of anodes is greatly affected by the rolling technologies. An increase in the rolling number resulted in a decreasing trend for the oxygen evolution overpotential and corrosion rate of anodes. This is contrary to the exchange current density of the electrode suface. In addition, the intensity of the diffraction peaks (consist of PbO, PbOX and α-PbO2) mainly exhibited an increasing trend. The cross-rolled anode showed a more uniform microstructure, indicating recrystallization during the rolling process. |
2楼2015-05-05 15:04:50