Corrosion Behavior of Pb-Ca-Sn Electrodes for Copper Electrowinning

Autor:	Zhi Qiang Hua, Lei Wang, Xue Tao Yuan, Tao Li, Xu Dong Lv
Rok vydání:	2011
Předmět:	Materials science chemistry Metallurgy Electrode General Engineering chemistry.chemical_element Electrolyte Microstructure Polarization (electrochemistry) Copper Corrosion Electrowinning Anode
Zdroj:	Advanced Materials Research. 402:349-353
ISSN:	1662-8985
DOI:	10.4028/www.scientific.net/amr.402.349
Popis:	Anodic polarization behavior of ternary alloy Pb-0.08%Ca-1%Sn is studied by potentiodynamic polarization measurements, corrosion rate, the products on electrode surface after polarization, and microstructure of anode mud after polarization in electrowinning cell. The results show that Pb-Ca-Sn anode is easy to be passivated in electrolyte for copper electrowinning, the maintaining passivity current density is 97.72 µA•cm-2and the corrosion products on the surface of Pb-Ca-Sn electrode present loose scaly, being composed of α-PbO2, β- PbO2and PbSO4after polarization.
Databáze:	OpenAIRE
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