Preferential evaporation in atom probe tomography: an analytical approach - Normandie Université Access content directly
Journal Articles Microscopy and Microanalysis Year : 2020

Preferential evaporation in atom probe tomography: an analytical approach

Abstract

Atom probe tomography (APT) analysis conditions play a major role in the composition measurement accuracy. Preferential evaporation, which significantly biases apparent composition, more than other well-known phenomena in APT, is strongly connected to those analysis conditions. One way to optimize them, in order to have the most accurate measurement, is therefore to be able to predict and then to estimate their influence on the apparent composition. An analytical model is proposed to quantify the preferential evaporation. This model is applied to three different alloys: NiCu, FeCrNi and FeCu. The model explains not only the analysis temperature dependence, as in already existing model, but also the dependence to the pulse fraction and the pulse frequency. Moreover, the model can also provide energetic constant directly linked to energy barrier, required to field evaporate atom from the sample surface. 2
Fichier principal
Vignette du fichier
Article - Preferential evaporation_HAL.pdf (1.3 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-02917595 , version 1 (19-08-2020)

Identifiers

Cite

Constantinos Hatzoglou, Solène Rouland, Bertrand Radiguet, Auriane Etienne, Gérald da Costa, et al.. Preferential evaporation in atom probe tomography: an analytical approach. Microscopy and Microanalysis, 2020, 26 (4), pp.689-698. ⟨10.1017/S1431927620001749⟩. ⟨hal-02917595⟩
51 View
317 Download

Altmetric

Share

Gmail Facebook X LinkedIn More