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    Interpretation of atom probe tomography data for the intermetallic TiAl+Nb by means of field evaporation simulation

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    Type
    Article
    Authors
    Boll, Torben
    Al-Kassab, Tala'at
    KAUST Department
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2013-01
    Permanent link to this record
    http://hdl.handle.net/10754/562562
    
    Metadata
    Show full item record
    Abstract
    In this paper simulations of the field evaporation process during field ion microscopy (FIM) and atom probe tomography (APT) are presented and compared with experimental data. The Müller-Schottky-model [1] was extended to include the local atomic arrangement on the evaporation process of atoms. This arrangement was described by the sum of the next-neighbor-binding-energies, which differ for an atom of type A, depending on how many A-A, B-B or A-B bonds are present. Thus simulations of APT-data of intermetallic phases become feasible. In this study simulations of L10-TiAl with additions of Nb are compared with experimental data. Certain artifacts, which appear for experimental data are treated as well. © 2012 Elsevier B.V.
    Citation
    Boll, T., & Al-Kassab, T. (2013). Interpretation of atom probe tomography data for the intermetallic TiAl+Nb by means of field evaporation simulation. Ultramicroscopy, 124, 1–5. doi:10.1016/j.ultramic.2012.09.003
    Sponsors
    The authors would like to acknowledge financial support by the Deutsch-Chinesisches Zentrum zur Wissenschaftsforderung (032/2), Beijing and the Deutsche Forschungsgemeinschaft (Contract AL 592/1-3).
    Publisher
    Elsevier BV
    Journal
    Ultramicroscopy
    DOI
    10.1016/j.ultramic.2012.09.003
    PubMed ID
    23142738
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.ultramic.2012.09.003
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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