resumo
In this paper the inhibitive performance of cerium molybdate nanowires prepared by a novel methodology is reported. The methodology is based on a low-temperature, controlled-rate mixing process. Structurally, cerium molybdate nanowires were found to be amorphous-like materials whose inhibiting action towards aluminium alloy 2024-T3 was demonstrated by DC polarization and electrochemical impedance spectroscopy (EIS), corroborated by microstructural surface analysis of the metallic substrate. The observed inhibiting action is attributed to the higher solubility of the cerium molybdate nanomaterials with respect to crystalline sodium cerium molybdate obtained at room temperature. (C) 2012 Elsevier Ltd. All rights reserved.
palavras-chave
AA2024-T3; INHIBITION; COATINGS; SPECTROSCOPY; PHOSPHATE; CHROMATE; PIGMENTS; COBALT
categoria
Materials Science; Metallurgy & Metallurgical Engineering
autores
Yasakau, KA; Tedim, J; Zheludkevich, ML; Drumm, R; Shem, M; Wittmar, M; Veith, M; Ferreira, MGS
nossos autores
João Tedim
Professor associado
Kiryl Yasakau
Investigador Auxiliar
Mário Guerreiro Silva Ferreira
Professor(a) Jubilado(a)
Mikhail Zheludkevich
Investigador Principal ConvidadoProjectos
agradecimentos
J.T. thanks FCT for Post-Doctoral grant (ref. SFRH/BPD/64335/2009). The authors acknowledge Aleksey Lisenkov for the SEM/EDS mapping analysis and Dr. Andrei N. Salak for XRD measurements. MULTIPROTECT (ref. NMP3-CT-2005-011783) and FCT (ref. PTDC/CTM/65632/2006) projects are acknowledged as well for financial support.