3D Atome Probe Tomography

Atom Probe Tomography (APT) allows three-dimensional imaging of a tip-shaped specimen, on which it can determine the chemical composition on the atomic scale. Typical APT specimens are sharp needles with apex diameters of about 100 nm or less. To this tip a high voltage is applied so that the surface atoms experience a field that is almost high enough to evaporate them from the surface. An additionally applied high-frequency voltage or laser pulse leads to evaporation of single ions, which are then detected on a 2D detector. This time-resolved and position-sensitive detector analyses the type of the evaporated ions by time-of-flight mass spectroscopy. To avoid lateral movement of tip atoms, the tip has to be cooled down to cryogenic temperatures. Combining the detector information, the specimen can be reconstructed three-dimensionally with almost atomic resolution. Fields of applications include e.g. metals and semiconductors.

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Sketch of the LEAP working principle
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Local Electrode Atom Probe (LEAP 4000X HR)
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Laser Assisted Wide Angle Tomographic Atom Probe (LAWATAP)

Equipment

Local Electrode Atom Probe (LEAP 4000X HR)

  • UV-laser or voltage pulsing
  • Reflectron for enhanced mass resolution

Laser Assisted Wide Angle Tomographic Atom Probe (LAWATAP)

  • Three different laser wavelengths or voltage pulsing
  • Field ion microscopy with He or Ne available

Limitations/constraints

  • Sample require a SEM compatible sample size for FIB preparation or electropolishing
  • Organic materials are challenging and can only be accepted in special cases
  • The sample will be prepared as a sharp needle with a diameter of 20 nm to 300 nm

Projects

At KNMFi, a wide variety of research topics is covered. These include alloy design, high temperature composites, intermetallic phases, additive manufacturing, ceramics, high temperature oxidation and corrosion, strengthening mechanisms, high entropy alloys, precipitation processes, phase transformations, hydrogen storage, thin film systems, battery materials, measurement of proteins, superconductors and others. However, KNMFi directs its focus on high temperature materials, including their corrosion resistance.

Zusammenarbeit

In the frame of a cooperation it is possible to request instrument time from the Karlsruhe Nano Micro Facility (KNMFi) beantragt werden.

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A selection of topics investigated at KNMF during the last years. The picture shows the LEAP 4000 X HR. Dots represent individual atoms.
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Y-Ti-Cr-O-reiche Cluster in einem austenitischen ODS (oxide dispersion strengthened)-Stahl. Die Matrixatome sind ausgeblendet.

Publications


2022
On the complex intermetallics in an Al-Mn-Sc based alloy produced by laser powder bed fusion
Bayoumy, D.; Boll, T.; Schliephake, D.; Wu, X.; Zhu, Y.; Huang, A.
2022. Journal of alloys and compounds, 901, Art.Nr.: 163571. doi:10.1016/j.jallcom.2021.163571
Origin of non-uniform plasticity in a high-strength Al-Mn-Sc based alloy produced by laser powder bed fusion
Bayoumy, D.; Kwak, K.; Boll, T.; Dietrich, S.; Schliephake, D.; Huang, J.; Yi, J.; Takashima, K.; Wu, X.; Zhu, Y.; Huang, A.
2022. Journal of materials science & technology, 103, 121–133. doi:10.1016/j.jmst.2021.06.042
Chemical characterization of Mg0.25Mn0.75-H(D) nanocomposites by Atom Probe Tomography (APT)
Gemma, R.; Lu, Y.; Seils, S.; Boll, T.; Asano, K.
2022. Journal of alloys and compounds, 896, Article no: 163015. doi:10.1016/j.jallcom.2021.163015
High‐temperature ternary oxide phases in Ta/Nb‐Alumina composite materials
Eusterholz, M. K.; Boll, T.; Gebauer, J.; Weidner, A.; Kauffmann, A.; Franke, P.; Seifert, H.-J.; Biermann, H.; Aneziris, C.; Heilmaier, M.
2022. Advanced Engineering Materials. doi:10.1002/adem.202200161
2021
Microstructure and mechanical properties of high-Mn-ODS steels
Seils, S.; Kauffmann, A.; Delis, W.; Boll, T.; Heilmaier, M.
2021. Materials science and engineering / A, 825, Art.-Nr. 141859. doi:10.1016/j.msea.2021.141859
High entropy alloy nanocomposites produced by high pressure torsion
Taheriniya, S.; Davani, F. A.; Hilke, S.; Hepp, M.; Gadelmeier, C.; Chellali, M. R.; Boll, T.; Rösner, H.; Peterlechner, M.; Gammer, C.; Divinski, S. V.; Butz, B.; Glatzel, U.; Hahn, H.; Wilde, G.
2021. Acta Materialia, 208, Art.-Nr.: 116714. doi:10.1016/j.actamat.2021.116714
Vertical continuous compound casting of copper aluminum bilayer rods
Greß, T.; Glück Nardi, V.; Schmid, S.; Hoyer, J.; Rizaiev, Y.; Boll, T.; Seils, S.; Tonn, B.; Volk, W.
2021. Journal of materials processing technology, 288, Art.-Nr.: 116854. doi:10.1016/j.jmatprotec.2020.116854
The electronic states of ITO–MoS2: Experiment and theory
López-Galán, O. A.; Ramos, M.; Nogan, J.; Ávila-García, A.; Boll, T.; Heilmaier, M.
2021. MRS communications. doi:10.1557/s43579-021-00126-9
On aliovalent cations control of α-alumina growth on doped and undoped NiAl
Boll, T.; Babic, V.; Panas, I.; Bäcke, O.; Stiller, K.
2021. Acta Materialia, 210, Art.-Nr.: 116809. doi:10.1016/j.actamat.2021.116809
The High-Solution Design of Magnesium Alloys
Wang, J.; Yuan, Y.; Cheng, X.; Chen, T.; Jiang, B.; Li, D.; Tang, A.; Boll, T.; Pan, F.
2021. Magnesium Technology 2021. Ed.: V. M. Miller, 27–31, Springer. doi:10.1007/978-3-030-65528-0_5
Influence of carbon on the mechanical behavior and microstructure evolution of CoCrFeMnNi processed by high pressure torsion
Lu, Y.; Mazilkin, A.; Boll, T.; Stepanov, N.; Zherebtzov, S.; Salishchev, G.; Ódor, É.; Ungar, T.; Lavernia, E.; Hahn, H.; Ivanisenko, Y.
2021. Materialia, 16, Art.-Nr.: 101059. doi:10.1016/j.mtla.2021.101059
Microstructural and Chemical Constitution of the Oxide Scale formed on a Pesting-Resistant Mo-Si-Ti Alloy
Obert, S.; Kauffmann, A.; Seils, S.; Boll, T.; Kauffmann-Weiss, S.; Chen, H.; Anton, R.; Heilmaier, M.
2021. Corrosion science, 178, Art.-Nr. 109081. doi:10.1016/j.corsci.2020.109081
High temperature strength retention of Cu/Nb nanolaminates through dynamic strain ageing
Liu, Z.; Snel, J.; Boll, T.; Wang, J. Y.; Monclús, M. A.; Molina-Aldareguía, J. M.; LLorca, J.
2021. Materials science and engineering / A, 799, Article no: 140117. doi:10.1016/j.msea.2020.140117
2020
Temperature dependent strengthening contributions in austenitic and ferritic ODS steels
Seils, S.; Kauffmann, A.; Hinrichs, F.; Schliephake, D.; Boll, T.; Heilmaier, M.
2020. Materials science and engineering / A, 786, Article: 139452. doi:10.1016/j.msea.2020.139452
Microstructural properties and peritectic reactions in a binary Co–Sn alloy by means of scanning electron microscopy and atom probe tomography
Khushaim, M.; Alahmari, F.; Kattan, N.; Chassaing, D.; Boll, T.
2020. Materials Research Express, 7 (8), Art.Nr. 086508. doi:10.1088/2053-1591/abad04
2019
Crystallographic ordering in a series of Al-containing refractory high entropy alloys Ta-Nb-Mo-Cr-Ti-Al
Chen, H.; Kauffmann, A.; Seils, S.; Boll, T.; Liebscher, C. H.; Harding, I.; Kumar, K. S.; Szabo, D. V.; Schlabach, S.; Kauffmann-Weiss, S.; Müller, F.; Gorr, B.; Christ, H.-J.; Heilmaier, M.
2019. Acta materialia, 176, 123–133. doi:10.1016/j.actamat.2019.07.001
Strengthening in solid solutions of the system Au-Cu-Ni-Pd-Pt
Thiel, F.; Bollnow, C.; Freudenberger, J.; Geissler, D.; Kauffmann, A.; Chen, H.; Heilmaier, M.; Nielsch, K.
2019. DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM), Fachverband Metall- und Materialphysik (2019), Regensburg, Germany, March 31–April 5, 2019
High-pressure torsion driven mechanical alloying of CoCrFeMnNi high entropy alloy
Kilmametov, A.; Kulagin, R.; Mazilkin, A.; Seils, S.; Boll, T.; Heilmaier, M.; Hahn, H.
2019. Scripta materialia, 158, 29–33. doi:10.1016/j.scriptamat.2018.08.031
2018
Model-compatible description of the temperature-dependent strength of ferritic and austenitic ODS steels
Seils, S.; Hinrichs, F.; Boll, T.; Kauffmann, A.; Heilmaier, M.
2018, September. MSE Materials Science and Engineering-Konferenz, Darmstadt, 26. - 28.09.2018
Model-compatible description of the temperature dependent strength of ferritic and austenitic ODS steels
Seils, S.; Hinrichs, F.; Boll, T.; Kauffmann, A.; Heilmaier, M.
2018, September. Material Science and Engineering (MSE), Darmstadt, Germany, September 26th - 28th 2018
Atom Probe Tomography as a Tool to Analyze Outward Diffusion Through Al203 on FeAlCr
Recalde, O.; Heilmaier, M.; Boll, T.; Kauffmann, A.
2018, September. Annual Congress of the European Federation of Corrosion (EUROCORR 2018), Krakow, Poland, September 9–13, 2018
Ordering in Al-containing Refractory High Entropy Alloys Analyzed by Complemental Microstructure Characterization Techniques
Seils, S.; Chen, H.; Szabo, D. V.; Harding, I.; Kumar, S.; Kauffmann-Weiss, S.; Boll, T.; Kauffmann, A.; Heilmaier, M.
2018. Atom Probe Tomography and Microscopy (APT&M) 2018 and 56th Meeting of the International Field Emission Society (IFES), Gaithersburg, MD, June 10-15, 2018
Austenitic Nanoclustered ODS Steels for High Temperature Applications
Seils, S.; Schliephake, D.; Boll, T.; Kauffmann, A.; Heilmaier, M.
2018. Atom Probe Tomography and Microscopy (APT&M) 2018 and 56th Meeting of the International Field Emission Society (IFES), Gaithersburg, MD, June 10-15, 2018
2017
Austenitic nano-clustered ODS steels for high temperature applications
Seils, S.; Frauke, H.; Boll, T.; Kauffmann, A.; Heilmaier, M.
2017. 7th European Atom Probe Workshop, Fiskebäckskil/Schweden, 02.-05.10.2017
Adaption of metal injection molding to quinary high entropy alloys
Grimonprez, A.; Chen, Y.; Kauffmann, A.; Piotter, V.; Wagner, J.; Heilmaier, M.
2017. TMS Conference, San Diego, CA, 26.02. - 02.03.2017
2016
Nanostructure evolution in ODS steels under ion irradiation
Rogozhkin, S.; Bogachev, A.; Korchuganova, O.; Nikitin, A.; Orlov, N.; Aleev, A.; Zaluzhnyi, A.; Kozodaev, M.; Kulevoy, T.; Chalykh, B.; Lindau, R.; Hoffmann, J.; Möslang, A.; Vladimirov, P.; Klimenkov, M.; Heilmaier, M.; Wagner, J.; Seils, S.
2016. Nuclear materials and energy, 9, 66–74. doi:10.1016/j.nme.2016.06.011
Microstructure and mechanical properties at elevated temperatures of a new Al-containing refractory high-entropy alloy Nb-Mo-Cr-Ti-Al
Chen, H.; Kauffmann, A.; Gorr, B.; Schliephake, D.; Seemüller, C.; Wagner, J. N.; Christ, H.-J.; Heilmaier, M.
2016. Journal of alloys and compounds, 661, 206–215. doi:10.1016/j.jallcom.2015.11.050
Modeling of the temperature dependent Deformation of ODS steels
Seils, S.; Hinrichs, F.; Selle, H.; Schliephake, D.; Kauffmann, A.; Wagner, J. N.; Heilmaier, M.
2016. DGM-Fachausschuss Intermetallische Phasen, 04.-05.04.2016, Erlangen
Formation and development of nanoclusters in ODS steels and their influence on mechanical properties
Seils, S.; Schliephake, D.; Kauffmann, A.; Wagner, J. N.; Heilmaier, M.
2016. APT&M-Konferenz 2016, Gyeongju/Süd-Korea, 12.-17.06.2016
Comparison of the microstructure and the mechanical properties of ferritic and austenitic ODS steels
Seils, S.; Hinrichs, F.; Selle, H.; Schliephake, D.; Kauffmann, A.; Wagner, J. N.; Heilmaier, M.
2016. 3rd ODISSEUS ODS Workshop, Dresden, 19.-22.04.2016
In Situ Study of the Influence of Nickel on the Phase Transformation Kinetics in Austempered Ductile Iron
Saal, P.; Meier, L.; Li, X.; Hofmann, M.; Hoelzel, M.; Wagner, J. N.; Volk, W.
2016. Metallurgical and materials transactions / A, 47 (2), 661–671. doi:10.1007/s11661-015-3261-1
In-situ neutron diffraction during biaxial deformation
Van Petegem, S.; Wagner, J.; Panzner, T.; Upadhyay, M. V.; Trang, T. T. T.; Van Swygenhoven, H.
2016. Acta Materialia, 105, 404–416. doi:10.1016/j.actamat.2015.12.015
2015
Thermal stability of ferritic and austenitic nanocluster containing ODS steels
Seils, S.; Schliephake, D.; Kauffmann, A.; Bruder, E.; Janda, D.; Wagner, J. N.; Heilmaier, M.
2015. 12th International Conference on the Mechanical Behavior of Materials (ICM 2015), Karlsruhe, Germany, May 10–14, 2015
Ferrtic and austenitic nanocluster containing ODS steels for high temperature applications
Seils, S.; Schliephake, D.; Kauffmann, A.; Wagner, J. N.; Heilmaier, M.
2015. European APT Workshop, Leoben, A, October 6-9, 2015
Early cluster formation during rapid cooling of an Al-Cu-Mg alloy: In situ small-angle X-ray scattering
Schloth, P.; Menzel, A.; Fife, J. L.; Wagner, J. N.; Van Swygenhoven, H.; J.-M. Drezet
2015. Scripta Materialia, 108, 56–59. doi:10.1016/j.scriptamat.2015.06.015
An APT investigation of an amorphous Cr-B-C thin film
Boll, T.; Thuvander, M.; Koch, S.; Wagner, J. N.; Nedfors, N.; Jansson, U.; Stiller, K.
2015. Ultramicroscopy, 159 (2), 217–222. doi:10.1016/j.ultramic.2015.01.001