Local electrochemical investigation of single grains of polycrystalline Cu-16%Zn-8%Al alloy

Autor(es)

Barragan, Jose T. C. ^[1] ; Blanco, Matildes ^[1] ; Barelli, Nilso ^[1] ; Della Noce, Rodrigo ^[1] ; Fugivara, Cecilio S. ^[1] ; Fernandez, Javier ^[2] ; Benedetti, Assis V. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Inst Quim, Dept Quim Fis, BR-14801970 Araraquara, SP - Brazil

^[2] Univ Barcelona, Dept Ciencia Mat & Ingn Met, E-08028 Barcelona - Spain

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Chemical Society; v. 22, n. 11, p. 2108-2114, NOV 2011.
• Citações Web of Science: 1

Resumo

Local electrochemical studies of single grains of a polycrystalline Cu-16%Zn-8%Al alloy were investigated in borate buffer solution (pH 8.4) by means of microelectrochemical technique. The grain orientations, which were determined by the Laue back-reflection method, were predominantly close to [110] direction, suggesting that the sample was texturized. The open circuit potential measurements showed that the lower steady state potential was observed for the grain which has the highest number of steps on the alloy surface. The cyclic voltammetry experiments suggested that the orientation of Cu2O follows the substrate one in the Cu-Zn-Al alloy, while CuO grows independently. (AU)

• Processo FAPESP: 04/11984-2 - Estudo eletroquimico de uma liga de cu-zn-al, monofasica de fase beta poli e monocristalina com orientacao (100).
• Beneficiário: Jose Tiago Claudino Barragan
• Modalidade de apoio: Bolsas no Brasil - Mestrado