The effects of Nd on lead anode for zinc electrowinning
A detailed investigation of the effects of Nd on the microstrueture,mechanical properties and electrochemical properties of lead anode in 160g.L-1 at 35℃ was carried out.Galvanostatic polarization and Chronopotentiometry (CP) were used to study the electrochemical behavior (such as anodic potential,corrosion rate and the composition of passive film) of the Pb and Pb-Nd anodes.The metallographic structure and passive film morphology of Pb and Pb-Nd anodes were observed and analyzed using polarizing microscope and scanning electronic microscopy (SEM),respectively.The experimental results show the grains become smaller and aggregation of PbxNdy become severe as the content of Nd increases.The addition of Nd enhances the formation of PbO2,inhibits the formation of PbSO4 and PbO and reduces the anodic potential.However,Holes presenting on rough passive film of high Nd content Pb-Nd anodes accelerate the corrosion.
Nd Zinc electrowinning Lead anode Rare earth
ZHONG Xiao-cong HONG Bo LI Yan-hong JIANG Liang-xing LAI Yan-qing
School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China; N
国际会议
昆明
英文
1115-1118
2012-10-12（万方平台首次上网日期，不代表论文的发表时间）