Surface analysis, microstructural characterization and local corrosion processes in decarburized SAE 9254 spring steel
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2019
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Resumo
The aim of the present work was to study the surface chemistry,
microstructure and local corrosion processes at the decarburized layer
of the SAE 9254 automotive spring steel. The samples were
austenitized at 850 and 900 °C, and oil quenched. The microstructure
was investigated using confocal laser scanning microscopy and
scanning electron microscopy. The surface chemistry was analyzed by
X-ray photoelectron spectroscopy. Electrochemical impedance
spectroscopy and potentiodynamic polarization were employed to
assess the global corrosion behavior of the decarburized samples.
Scanning electrochemical microscopy (SECM) was used to evaluate the
influence of decarburization on the local corrosion activity.
Microstructural characterization and XPS analysis indicate a
dependence of the local electrochemical processes with the steel
microconstituents and Si oxides in the decarburized layer.
Como referenciar
SANTANA, JESSICA C.C. de C.; SILVA, REJANE M.P. da; ANTUNES, RENATO A.; SANTOS, SYDNEY F. Surface analysis, microstructural characterization and local corrosion processes in decarburized SAE 9254 spring steel. Corrosion, v. 75, n. 12, p. 1474-1486, 2019. DOI: 10.5006/3234. Disponível em: http://repositorio.ipen.br/handle/123456789/30860. Acesso em: 04 Jun 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.