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Article | REF: P900 V2

Atom probe tomography APT

Authors: Didier BLAVETTE, François VURPILLOT, Bernard DECONIHOUT

Publication date: December 10, 2013 | Lire en français

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    7. Three-dimensional imaging in SAT

    The end result of an atom probe analysis is a 3D map of the position of atoms of each species (A, B, C...) within the probed volume.

    Tens of millions of atoms can be collected for each analysis. Analyzing the information contained in the data sets is not trivial.

    The dataset can be represented using various methods to deduce structural or chemical properties (precipitation, segregation, interdiffusion...) that may influence the material's physical properties.

    The simplest way is to represent atoms by a set of colored points defined in 3D. Each point is then an atom with coordinates (x, y, z ). The color-coded chemical nature is deduced from the mass spectrum (figure 8...

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