Al-based anodic oxide films structure observation using field emission gun scanning electron microscopy

Al-based anodic oxide films structure observation using field emission gun scanning electron microscopy

Autor Regone, N. N. Google Scholar
Freire, CMA Google Scholar
Ballester, M. Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Universidade Estadual de Campinas (UNICAMP)
Resumo In the present work, the anodic oxide films of Al, Al-Cu 4.5% and Al-Si 6.5% alloys are formed using direct and pulse current. in the case of Al-Cu and Al-Si alloys, the electrolyte used contains sulfuric acid and oxalic acid, meanwhile for Al the electrolyte contains sulfuric acid only. Al-Cu alloy was submitted to a heat treatment in order to decrease the effect of inter metallic phase theta upon the anodic film structure. Fractured samples were observed using a field emission gun scanning electron microscope JSM-6330F at (LME)/Brazilian Synchrotron Light Laboratory (LNLS), Campinas, SP, Brazil. the oxide film images enable evaluation of the pore size and form with a resolution similar to the transmission electron microscope (TEM) resolution. It is also observed that the anodizing process using pulse current produces an irregular structure of pore walls, and by direct cur-rent it is produced a rectilinear pore wall. (c) 2005 Elsevier B.V. All rights reserved.
Palavra-chave anodizing
field emission gun microscopy
aluminum
Al-Cu alloy
Al-Si alloy
Idioma Inglês
Data de publicação 2006-02-20
Publicado em Journal of Materials Processing Technology. Lausanne: Elsevier Science Sa, v. 172, n. 1, p. 146-151, 2006.
ISSN 0924-0136 (Sherpa/Romeo, fator de impacto)
Publicador Elsevier B.V.
Extensão 146-151
Fonte http://dx.doi.org/10.1016/j.jmatprotec.2005.09.005
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000235379700019
Endereço permanente http://repositorio.unifesp.br/handle/11600/28751

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