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Report No.

Oxidation of Cu$$_{3}$$Pt(111) surface with hyperthermal oxygen molecule

Tsuda, Yasutaka*; Makino, Takamasa*; Tsukada, Chie; Yoshigoe, Akitaka ; Fukuyama, Tetsuya*; Okada, Michio*

Oxidation is a main reaction in corrosion processes and its understabding is important to develop anticorrosion materials. In this study, initial oxidation at Cu$$_{3}$$Pt(111) surface was investigated by using surface analysis apparatus at BL23SU of SPring-8. The surface oxidized by 2.3 eV molecular beams was analzyed by synchrotron radiation photoelectron spectroscopy. We confirmed that Cu L$$_{3}$$M$$_{4.5}$$M$$_{4.5}$$ AES spectrum and Cu-2p XPS spectrum show the only growth of Cu oxide whereas Pt oxide was not formed from the results of Pt-4f XPS. It was also found that the reactivity of Cu$$_{3}$$Pd(111) surface is lower than that of Cu$$_{3}$$Au(111) surface.



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