Anodic oxidation of Al-Ag alloys

Páez, MA; Sandoval A.; Sepulveda, Y; Monsalve A.; Skeldon, P; Thompson, GE; Zhou, X.

Abstract

The anodic oxidation of solution-treated and quenched Al-Ag alloys containing 0.3, 0.6, 0.9 and 1.2 at.%Ag, is examined in ammonium pentaborate electrolyte, which leads to growth of barrier-type anodic films. Enrichments of silver, ~3.1 × 1015 Ag atoms cm-2, are developed in the alloys immediately beneath the amorphous alumina films, with the level of enrichment not depending significantly upon the composition of the bulk alloy. The enrichment is relatively low due to clustering of silver atoms in the bulk alloy, which reduces the concentration of silver that is available to enrich from solid solution. Silver species are incorporated into the anodic film, where they migrate outward faster than Al3+ ions. © 2002 Elsevier Science Ltd. All rights reserved.

Más información

Título según WOS: Anodic oxidation of Al-Ag alloys
Título según SCOPUS: Anodic oxidation of Al-Ag alloys
Título de la Revista: CORROSION SCIENCE
Volumen: 44
Número: 12
Editorial: PERGAMON-ELSEVIER SCIENCE LTD
Fecha de publicación: 2002
Página de inicio: 2857
Página final: 2863
Idioma: English
URL: http://linkinghub.elsevier.com/retrieve/pii/S0010938X02000847
DOI:

10.1016/S0010-938X(02)00084-7

Notas: ISI, SCOPUS