Scanning Electrochemical Microscopy (SECM) study of the electrochemical behavior of anodized AZ31B magnesium alloy in simulated body fluid
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2019
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Materials Research
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In this work, scanning electrochemical microscopy (SECM) was employed to study the corrosion
behavior of anodized AZ31B magnesium alloy exposed to simulated body fluid. SECM measurements
were carried out in surface generation/tip collection mode. The hydrogen evolution flux caused
during corrosion of the magnesium alloy was oxidized at the ultra-microelectrode (UME). Thus,
this experimental procedure allowed evaluating the effect of the anodic protection in this alloy from
the SECM analysis of Z- approximation curves, cyclic voltammograms and topographic maps. The
results evidence differences in the local electrochemical response of magnesium alloy in the anodized
and pristine conditions. The main sites of H2 evolution were verified in the magnesium alloy without
anodizing at short exposure times.
Como referenciar
OLIVEIRA, LEANDRO A. de; SILVA, REJANE M.P. da; ANTUNES, RENATO A. Scanning Electrochemical Microscopy (SECM) study of the electrochemical behavior of anodized AZ31B magnesium alloy in simulated body fluid. Materials Research, v. 22, n. 5, p. 1-8, 2019. DOI: 10.1590/1980-5373-MR-2019-0079. Disponível em: http://repositorio.ipen.br/handle/123456789/30849. Acesso em: 26 Apr 2024.
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