Selective corrosion of 550°C aged Cu10Ni-3Al-1.3Fe alloy in NaCl aqueous solution
N/D
Tipo de produção
Artigo
Data de publicação
2011
Texto completo (DOI)
Periódico
Corrosion Science
Editor
Texto completo na Scopus
Citações na Scopus
9
Autores
Liberto R.C.N.
Magnabosco R.
Alonso-Falleiros N.
Orientadores
Resumo
This work studied the electrochemical behavior of a solution treated or 550°C aged Cu10Ni-3Al-1.3Fe alloy, in 0.01M NaCl aqueous solution, through potentiodynamic polarization in both stagnant condition or under erosion process. Results showed the occurrence of a passivity break potential (Epb), related to the beginning of the denickelification process, which occurred as a localized attack under stagnant electrolyte. Under erosion conditions localized denickelification was not observed, despite of the presence of Epb. This could indicate that selective corrosion of Ni, which caused the observed Epb, occurred as a dissolution-redeposition process, with removal of the Cu deposits during erosion process. © 2011 Elsevier Ltd.
Citação
Liberto, Rodrigo César Nascimento; Magnabosco, Rodrigo; ALONSO-FALLEIROS, Neusa. Selective corrosion of 550°C aged Cu10Ni 3Al 1.3Fe alloy in NaCl aqueous solution. Corrosion Science, n. 5, p. 1976-1982, 2011.
Palavras-chave
Keywords
A. Alloy; A. Copper; B. Polarization; C. Pitting corrosion
Assuntos Scopus
A. Alloy; A. Copper; B. Polarization; C. Pitting corrosion; Denickelification; Electrochemical behaviors; Erosion conditions; Erosion process; NaCl aqueous solution; Redeposition; Selective corrosion