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Type: Artigo
Title: Performance Of New Pb-bi Alloys For Pb-acid Battery Applications: Eis And Polarization Study
Author: Peixoto
Leandro C.; Bortolozo
Ausdinir D.; Garcia
Amauri; Osorio
Wislei R.
Abstract: The present investigation is focused on the evaluation of electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization results, associated with resulting microstructural features of two distinct as-cast Pb-Bi alloys (i.e., 1 and 2.5 wt.% Bi). EIS, potentiodynamic polarization curves, and equivalent circuits are used to analyze the corrosion behavior. The electrochemical parameters show that the corrosion resistance increases when the matrix microstructure is characterized by coarser cells when compared with finer ones. However, when a coarse cellular array is associated with increase in Bi content caused by macrosegregation during casting, the corrosion resistance decreases significantly. Bismuth modifies the anode/cathode area ratio increasing drastically the corrosion action.
Subject: Eis
Electrochemical Techniques
Editor: Springer
New York
Citation: Journal Of Materials Engineering And Performance. Springer, v. 25, p. 2211 - 2221, 2016.
Rights: fechado
Identifier DOI: 10.1007/s11665-016-2059-7
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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