Influence of surface finishing on the electrochemical activity of the 2098-T351 aluminum alloy
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2019
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EUROPEAN CORROSION CONGRESS
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In this work, scanning electrochemical microscopy (SECM) measurements were employed to
characterize the electrochemical activities of polished and as-received surfaces of the 2098-T351
aluminum alloy (AA2098-T351). The effects of the near surface deformed layer (NSDL) and its
removal by polishing on the electrochemical activities of the alloy surface were evaluated and
compared by the use of different modes of SECM. Confocal Laser Scanning Microscopy
(CLSM) and energy dispersive X-ray spectroscopy (EDS) were also employed to characterize the
morphology of the surfaces. The surface chemistry was analyzed by X-ray Photoelectron
Spectroscopy (XPS). The generation/tip collection (SG/TC) and competition modes of the SECM
were used to study hydrogen gas (H2) evolution and oxygen reduction reactions, respectively. H2
evolution and oxygen reduction were more pronounced on the polished surface compared to the asreceived
surface that revealed lower electrochemical activities showing that either the NSDL
largely decreased the local electrochemical activities at the AA2098-T351 surface.
Como referenciar
SILVA, REJANE; MILAGRE, MARIANA; OLIVEIRA, LEANDRO; ANTUNES, RENATO; DONATUS, UYIME; COSTA, ISOLDA. Influence of surface finishing on the electrochemical activity of the 2098-T351 aluminum alloy. In: EUROPEAN CORROSION CONGRESS, September 9-13, 2019, Seville, Spain. Abstract... Disponível em: http://repositorio.ipen.br/handle/123456789/31029. Acesso em: 25 Apr 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.