Diffusion in Solid Metals and Alloys · Figures for 13
This chapter contains figures for surface diffusion on metals. A terrace-ledge-kink model of a surface of a metal single crystal is shown. This section also illustrates a model for adatom cross-channel surface diffusion on a fcc (110) surface by an atom exchange mechanism. In this section the following graphs are illustrated: i) surface orientations of a fcc metal crystal with different symmetries, ii) a polar plot of relative anisotropy of surface diffusion coefficients, iii) a polar plot of the surface diffusion coefficient of Ni on a stepped W(110) crystal at 1170 K, iv) Pd distribution measured by scanning Auger spectroscopy on a stepped W (650) crystal after diffusion at 1028 K for 15 and 50 min, v) concentration profiles of radio-active 64Cu on various Cu single crystal surfaces plotted as log (intensity) versus distance, vi) temperature dependence of an intrinsic surface self-diffusion coefficient of adatoms, dimers, clusters, fcc and bcc metals, metals with adsorbates and clean metal, vii) enhanced mass transfer surface self-diffusion coefficients of Cu, Ag and Au due to various adsorbates, viii) activation energy of surface self-diffusion of metal as a function of the coverage θ, ix) relative intensity of specularly scattered He beam versus temperature, and x) comparative temperature dependence of a mass transfer surface self-diffusion coefficient of the fcc and bcc metals, and the metals with adsorbates and clean metal.