A new methodology in scanning electrochemical microscopy
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2022
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CONGRESSO BRASILEIRO DE ENGENHARIA E CIÊNCIA DOS MATERIAIS, 24.
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Resumo
Among the electrochemical tests under development, scanning electrochemical microscopy (SECM)
stands out for allowing the investigation of corrosive processes in situ, since it is capable of
providing information with high spatial resolution on a small scale, in addition to allowing the
direct identification of electrochemical species involved in the ongoing corrosive processes. In the
study of automotive steel sheets coated with metallic alloys, a crucial region under the action of
corrosive agents is the cross-sectional area. In this work, a new methodology for measures in
spatial resolution at the SECM is presented. The applicability of this technique was demonstrated
considering the corrosion behavior of a steel sheet coated with zinc, aluminum and magnesium
alloy. Samples of this material were prepared according to this new methodology. Maps of pH
variation, hydrogen evolution and oxygen distribution were obtained in the cross section area, in
different electrolytes. With the acquisition of these results, it was possible to certify the applicability
of this method in the study of coated metallic materials, as well as its potential to generate valuable
contributions regarding the influence of the coating / substrate ratio on the electrochemical
response of these materials.
Como referenciar
BOLSANELLO, M.F.; PEREZ, J.I.; SILVA, R.M.; SOUTO, R.M.; ROSSI, J.L. A new methodology in scanning electrochemical microscopy: cross section analysis in the investigation of corrosive processes of steels with metallic coating. In: CONGRESSO BRASILEIRO DE ENGENHARIA E CIÊNCIA DOS MATERIAIS, 24., 6-10 de novembro, 2022, Águas de Lindóia, SP. Resumo... Disponível em: http://repositorio.ipen.br/handle/123456789/33781. Acesso em: 11 May 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.