Towards a new 3D imaging and analysis method of punctual and clusters defects in metals
The study of materials at the atomic scale becomes essential today to understand the evolution of these materials over time. In particular, in the field of nuclear power, where it is imperative to better understand the damage caused by radiation. Today, there is no technique capable of mapping in three dimensions with an atomic resolution the finest damage (gaps, cavities, ...) created by radiations. The field ion microscopy allows this resolution but requires the development of a method allowing the three-dimensional volume of the sample analyzed to be faithfully reconstructed from the ionic images.
The results obtained in post-treatment are strongly dependent on the quality and the resolution of the ionic images. Automating the control of experimental parameters during the acquisition is necessary to maintain the best possible image throughout the all analysis.
The first results obtained are very encouraging and allow today to faithfully reconstruct the crystallographic lattice. The developed algorithms was integrated in a complete and user-friendly software allowing all users to quickly reconstruct the volume of a given sample.
B. Klaes
Département Instrumentation Scientifique
Groupe de Physique des matériaux
Avenue de l'Université
76800 Saint Etienne du Rouvray
France
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