Emission Mössbauer Spectroscopy of Grain Boundaries in Poly- and Nanocrystalline Metals
Capabilities of the emission nuclear gamma resonance (NGR) spectroscopy in studying grain boundaries in metals are considered. It is demonstrated that this method enables to evaluate grain-boundary segregation factors, to determine grain-boundary diffusion mechanisms, to estimate an effective diffusion coefficient in near-boundary areas, etc. Besides, this method permits to evaluate quantitatively differences in the properties of grain boundaries of polycrystalline and nanostructured materials.
A. Agüero, J.M. Albella, M.P. Hierro, J. Phillibert and F.J. Pérez Trujillo
V. V. Popov "Emission Mössbauer Spectroscopy of Grain Boundaries in Poly- and Nanocrystalline Metals", Defect and Diffusion Forum, Vols. 289-292, pp. 633-640, 2009