Surface Segregation of CoPt Polycrystalline Alloy
نویسندگان
چکیده
منابع مشابه
Surface segregation in a polycrystalline Pd70Cu30 alloy hydrogen purification membrane
X-ray photoelectron spectroscopy (XPS) and low energy ion scattering spectroscopy (LEISS) have been used to study the effects of various surface preparations and thermal treatments on the composition of the near-surface region ( 7 atomic layers) and the topmost atomic layer of a polycrystalline Pd70Cu30 alloy. Palladium enrichment (relative to the bulk composition) is observed in the XPS-access...
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Surface segregation in alloys can be influenced by the presence of adsorbed species. In this work, the effect of adsorbed sulfur on surface segregation in a Pd70Cu30 alloy was studied for sulfur coverages from zero through saturation and for temperatures from 400 to 1000 K. X-ray photoemission spectroscopy (XPS) was used to determine the alloy composition in the near-surface region ( 7 atomic l...
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B. C. Han,1 A. Van der Ven,2 G. Ceder,1,* and Bing-Joe Hwang3 1Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA 2Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109–2136, USA 3Nano Electrochemistry Laboratory, Department of Chemical Engineering, Nati...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 2003
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.104.35