NDLI: Comparison of corrosion and oxygen evolution behaviors between cast and rolled Pb–Ag

Content Provider	Springer Nature Link
Author	Zhong, Xiao cong Yu, Xiao ying Liu, Zheng wei Jiang, Liang xing Li, Jie Liu, Ye xiang
Copyright Year	2015
Abstract	The corrosion and oxygen evolution behaviors of cast and rolled Pb–Ag–Nd anodes were investigated by metalloscopy, environmental scanning electron microscopy, X-ray diffraction analysis, and various electrochemical measurements. The rolled anode exhibits fewer interdendritic boundaries and a dispersed distribution of Pb–Ag eutectic mixtures and Nd-rich phases in its cross-section. This feature inhibits rapid interdendritic corrosion into the metallic substrate along the interdendritic boundary network. In addition, the anodic layer formed on the rolled anode is more stable toward the electrolyte than that formed on the cast anode, reducing the corrosion of the metallic substrate during current interruption. Hence, the rolled anode has a higher corrosion resistance than the cast anode. However, the rolled anode exhibits a slightly higher anodic potential than the cast anode after 72 h of galvanostatic polarization, consistent with the larger charge transfer resistance. This larger charge transfer resistance may result from the oxygen-evolution reactive sites being blocked by the adsorption of more intermediates and oxygen species at the anodic layer/electrolyte interfaces of the rolled anode than at the interfaces of cast anode.
Starting Page	1067
Ending Page	1075
Page Count	9
File Format	PDF
ISSN	16744799
Journal	International Journal of Minerals, Metallurgy, and Materials
Volume Number	22
Issue Number	10
e-ISSN	1869103X
Language	English
Publisher	University of Science and Technology Beijing
Publisher Date	2015-09-30
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	lead–silver alloys anode materials rolling corrosion resistance impedance Materials Science Metallic Materials Characterization and Evaluation of Materials Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Geochemistry and Petrology Mechanical Engineering

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