Selective oxidation of aluminium and interfacial enrichment of iron during anodic oxide growth on an Al6Fe phase
作者： K. Shimizu , G.M. Brown , H. Habazaki , K. Kobayashi , P. Skeldon
DOI: 10.1016/S0010-938X(99)00108-0
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摘要: Abstract Porous anodic oxide formation on an Al-1.4wt%Fe alloy containing finely dispersed Al 6 Fe particles has been examined by transmission electron microscopy of ultramicrotomed sections, with particular attention directed towards the local film over particles. It was found that phases involves initial oxidation aluminium and interfacial enrichment iron, confined to a thin layer, about 1–2 nm thick, in phase immediately beneath oxide. With EDX analysis, using probe 0.8 diameter, composition iron-enriched layer determined be 80 20 . Additionally, close examination ultra-high resolution microscope, revealed heavily distorted structure occasional presence ordered domains, only 1 structure. No evidence obtained suggest nano-sized iron clusters enriched layer. These observations are discussed terms Gibbs free energy criteria for proposed recently several authors.
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sci-hub.se 参考文章(11)
H. Habazaki, K. Shimizu, P. Skeldon, G. E. Thompson, G. C. Wood, X. Zhou, Effects of Alloying Elements in Anodizing of Aluminium Transactions of The Institute of Metal Finishing. ,vol. 75, pp. 18- 23 ,(1997) , 10.1080/00202967.1997.11871137
K Shimizu, G.M Brown, K Kobayashi, P Skeldon, G.E Thompson, G.C Wood, Ultramicrotomy—a route towards the enhanced understanding of the corrosion and filming behaviour of aluminium and its alloys Corrosion Science. ,vol. 40, pp. 1049- 1072 ,(1998) , 10.1016/S0010-938X(98)00006-7
L. K. Walford, The structure of the intermetallic phase FeAl6 Acta Crystallographica. ,vol. 18, pp. 287- 291 ,(1965) , 10.1107/S0365110X65000610
G.M Brown, K Shimizu, K Kobayashi, P Skeldon, G.E Thompson, G.C Wood, The growth of a porous oxide film of a unique morphology by anodic oxidation of an Al-0.5 wt% Ni alloy Corrosion Science. ,vol. 40, pp. 1575- 1586 ,(1998) , 10.1016/S0010-938X(98)00068-7
K Shimizu, G.M Brown, H Habazaki, K Kobayashi, P Skeldon, G.E Thompson, G.C Wood, Direct evidence for interfacial enrichment of iron during anodic oxide growth on an Al6Fe phase Corrosion Science. ,vol. 41, pp. 1783- 1790 ,(1999) , 10.1016/S0010-938X(99)00015-3
K. Shimizu, K. Kobayashi, G.E. Thompson, G.C. Wood, A novel technique for ready determination of cathodic activity of intermetallic compounds during corrosion of aluminium Corrosion Science. ,vol. 34, pp. 1475- 1477 ,(1993) , 10.1016/0010-938X(93)90242-9
K. Shimizu, K. Kobayashi, G.E. Thompson, P. Skeldon, G.C. Wood, The influence of θ′ precipitates on the anodizing behaviour of binary Al-Cu alloys Corrosion Science. ,vol. 39, pp. 281- 284 ,(1997) , 10.1016/S0010-938X(97)83347-1
R.C. Furneaux, G.E. Thompson, G.C. Wood, The application of ultramicrotomy to the electronoptical examination of surface films on aluminium Corrosion Science. ,vol. 18, pp. 853- 881 ,(1978) , 10.1016/0010-938X(78)90009-4
H. Habazaki, K. Shimizu, P. Skeldon, G.E. Thompson, G.C. wood, X. Zhou, Nanoscale enrichments of substrate elements in the growth of thin oxide films Corrosion Science. ,vol. 39, pp. 731- 737 ,(1997) , 10.1016/S0010-938X(97)89339-0
THE SCOPE FOR STUDIES OF THIN SURFACE FILMS ON METALS AND ALLOYS BY TRANSMISSION ELECTRON MICROSCOPY OF ULTRAMICROTOMED SECTIONS Philosophical Transactions of the Royal Society A. ,vol. 354, pp. 213- 235 ,(1996) , 10.1098/RSTA.1996.0007