Performance of new pb-bi alloys for pb-acid battery applications : eis and polarization study
ARTIGO
Inglês
Agradecimentos: The financial support provided by CNPq (The Brazilian Research Council; Grants #446797/2014-6), FAEPEX-UNICAMP, and FAPESP are acknowledged
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...
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
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
Fechado
Performance of new pb-bi alloys for pb-acid battery applications : eis and polarization study
Performance of new pb-bi alloys for pb-acid battery applications : eis and polarization study
Fontes
Journal of materials engineering and performance Vol. 25, no. 6 (June, 2016), p. 2211-2221 |