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Okada, Michio*; Tsuda, Yasutaka*; Oka, Kohei*; Kojima, Kazuki*; Di
o, W. A.*; Yoshigoe, Akitaka; Kasai, Hideaki*
Scientific Reports (Internet), 6, p.31101_1 - 31101_8, 2016/08
Times Cited Count：28 Percentile：73.3(Multidisciplinary Sciences)We report results of our experimental and theoretical studies on the oxidation of Cu-Au alloy surfaces, viz., Cu
Au(111), CuAu(111), and AuCu(111), using hyperthermal O
molecular beam (HOMB). We observed strong Au segregation to the top layer of the corresponding clean (111) surfaces. This forms a protective layer that hinders further oxidation into the bulk. The higher the concentration of Au in the protective layer formed, the higher the protective efficacy. As a result, of the three Cu-Au surfaces studied, AuCu(111) is the most stable against dissociative adsorption of O, even with HOMB. We also found that this protective property breaks down for oxidations occurring at temperatures above 300 K.
Iwase, Akihiro; L.E.Rehn*; P.M.Baldo*; L.Funk*
Journal of Nuclear Materials, 271-272, p.321 - 325, 1999/00
Times Cited Count：1 Percentile：13.12(Materials Science, Multidisciplinary)no abstracts in English
Nihon Kessho Gakkai-Shi, 23, p.140 - 143, 1981/00
no abstracts in English
Okada, Michio*; Tsuda, Yasutaka*; Teraoka, Yuden; Yoshigoe, Akitaka
no journal, ,
Cu and its nanostructure are important for application of future nanoelectrode and solar cell. The study of Cu surface oxidation as a corrosion process is required to develop advanced material with high properties for corrosion resistance. In this conference, the study on alloying effects in the ultrathin oxide film formation on CuAu alloy surface and bulk Au concentration dependence are presented.
