Migration of Thermal Vacancies in Quenched Pure AA1050 by Positron Annihilation


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A description of positron annihilation spectroscopy (PAS) in solids is given in terms of a trapping model. Data are presented for a commercial AA1050 dilute alloy ingot, and fitted to a model allowing presentation in the form of Arrhenius plots. From whence the value of the activation enthalpy, , for thermal vacancies obtained by PAS for AlFeSi is found to be 0.860.18eV.



Edited by:

David J. Fisher




E. A. Badawi et al., "Migration of Thermal Vacancies in Quenched Pure AA1050 by Positron Annihilation", Defect and Diffusion Forum, Vol. 293, pp. 19-26, 2009

Online since:

August 2009




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DOI: https://doi.org/10.1103/physrevb.37.9171