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J Chin Soc Corr Pro  1987, Vol. 7 Issue (3): 161-170    DOI:
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COMPOSITIONS OF BARRIER ANODIC FILMS ON ALUMINIUM AND THE MIGRATION OF ELECTROLYTE IONS WITHIN THE FILM
XU Yuan (Beijing University of Iron and Steel Technology) Thompson G. E.; Wood G. C.; Bethune B. B. (Corrosion and Protection Center; UMIST)
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Abstract  Some technical problems concerning the analysis of qarrier anodic films on aluminium by AES were discussed. By ion implantation of Xe marker, composition profiling along with direct observation of ultramicrotomed film sections, it has been proved that the barrier film is usually composed of two layers. The outer layer is formed by outwardly migrating aluminium ions at the film/solution interface. The inner layer, on the other hand, is formed by inwardly migrating oxygen-containing ions at the film/substrate interface. Ions characterizing the electrolyte may be incorporated into the film and migrate under the high electric field within the film. The average migration rate under the experimental conditions was measured.
Received:  25 June 1987     
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XU Yuan (Beijing University of Iron and Steel Technology) Thompson G. E.; Wood G. C.; Bethune B. B. (Corrosion and Protection Center; UMIST). COMPOSITIONS OF BARRIER ANODIC FILMS ON ALUMINIUM AND THE MIGRATION OF ELECTROLYTE IONS WITHIN THE FILM. J Chin Soc Corr Pro, 1987, 7(3): 161-170.

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