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Abstract:

Surface segregation of Pb has been studied using angle resolved X-ray Photoelectron Spectroscopy (ARXPS) and Density Functional Theory (DFT) modelling in a polycrystalline Au0.85Cu0.15 alloy. Au surface enrichment was found in the alloy surface, whereas Pb surface enrichment was detected after annealing. ARXPS depth profiles show a 23% surface coverage by Pb atoms. DFT calculations predict an approximate coverage of  monolayer (ML) of Pb atoms in the first atomic layer, consistent with the experimental results. The results presented here are an example of the importance of low concentration of impurities in determining the surface composition of bulk alloys. © 2013 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys
Autor:Völker, E.; Williams, F.J.; Jacob, T.; Schiffrin, D.J.
Filiación:Chemistry Department, University of Liverpool, Liverpool L69 7ZD, United Kingdom
Departamento de Química Inorgánica, Analítica y Química Física, Universidad de Buenos Aires, Buenos Aires C1428EHA, Argentina
Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
Palabras clave:DFT; Gold-copper alloy; Metals and alloys; Photoelectron spectroscopies; XPS; Angle-resolved X-ray photoelectron spectroscopy; DFT; Gold-copper alloys; Low concentrations; Metals and alloys; Polycrystalline au; Surface enrichment; Thermally induced; Alloys; Atoms; Density functional theory; Lead; Metallurgy; Photoelectron spectroscopy; Photoelectrons; Surface segregation; X ray photoelectron spectroscopy; Cerium alloys
Año:2014
Volumen:586
Página de inicio:475
Página de fin:478
DOI: http://dx.doi.org/10.1016/j.jallcom.2013.10.119
Título revista:Journal of Alloys and Compounds
Título revista abreviado:J Alloys Compd
ISSN:09258388
CODEN:JALCE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v586_n_p475_Volker

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Citas:

---------- APA ----------
Völker, E., Williams, F.J., Jacob, T. & Schiffrin, D.J. (2014) . ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys. Journal of Alloys and Compounds, 586, 475-478.
http://dx.doi.org/10.1016/j.jallcom.2013.10.119
---------- CHICAGO ----------
Völker, E., Williams, F.J., Jacob, T., Schiffrin, D.J. "ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys" . Journal of Alloys and Compounds 586 (2014) : 475-478.
http://dx.doi.org/10.1016/j.jallcom.2013.10.119
---------- MLA ----------
Völker, E., Williams, F.J., Jacob, T., Schiffrin, D.J. "ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys" . Journal of Alloys and Compounds, vol. 586, 2014, pp. 475-478.
http://dx.doi.org/10.1016/j.jallcom.2013.10.119
---------- VANCOUVER ----------
Völker, E., Williams, F.J., Jacob, T., Schiffrin, D.J. ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys. J Alloys Compd. 2014;586:475-478.
http://dx.doi.org/10.1016/j.jallcom.2013.10.119