Impact of directional walk on atom probe microanalysis

By Baptiste Gault, F. Danoix, K. Hoummada, D. Mangelinck, H. Leitner. 2012

154 citations recorded by the source corpus.

Abstract In the atom probe microanalysis of steels, inconsistencies in the measured compositions of solutes (C, N) have often been reported, as well as their appearance as molecular ions. Here we propose that these issues might arise from surface migration of solute atoms over the specimen surface. Surface migration of solutes is evidenced by field-ion microscopy observations, and its consequences on atom probe microanalysis are detailed for a wide range of solute (P, Si, Mn, B, C and N). It is proposed that directional walk driven by field gradients over the specimen surface and thermally activated is the prominent effect.

Subfields: Biomedical Engineering, Materials Chemistry, Metals and Alloys

View Paper: https://www.semanticscholar.org/paper/253277328bee2555c88be283f84a607115c45de9

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Biomedical Engineering

1. Baptiste Gault
2. J. Cairney
3. Dierk Raabe
4. Simon P. Ringer
5. D. Ponge
6. Michael Moody
7. T. Prosa
8. R. Kolli

In Materials Chemistry

1. Dierk Raabe
2. D. Ponge
3. Baptiste Gault
4. J. Cairney
5. Simon P. Ringer
6. Michael Moody
7. R. Kolli
8. A. Devaraj

In Metals and Alloys

1. Dierk Raabe
2. D. Ponge
3. Baptiste Gault
4. Simon P. Ringer
5. J. Cairney
6. R. Kolli
7. C. Tasan
8. Zhiming Li

Citations in the corpus

• Segregation assisted grain boundary precipitation in a model Al-Zn-Mg-Cu alloy (2018, background): “This effect is known to sometimes affect the distribution of solutes [67].”
• Atom Probe Microscopy (2012, methodology): “The direct relationship between the amplitude of the concentration variations and the electric field gradient was established for a wide range of solutes in [98].”
• Three-dimensional nanoscale characterisation of materials by atom probe tomography (2018, background): “occur [79] leading to a loss in both compositional and spatial accuracy.”
• Behavior of molecules and molecular ions near a field emitter (2015, background): “wer critical electric field to induce field evaporation associated with molecules rather than individual atoms. Such particles can be formed either by one or more mobile atoms adsorbed on the surface [85] bonding with a surface atom or by atoms that are neighbors within the structure of the specimen”