APT User Meeting

Session

Applied Structural Materials

21 Nov 2024, 09:00

Room 203 (large seminar room) (Max-Planck-Institut für Eisenforschung GmbH)

8. High-precision elemental analysis in atom probe tomography: The benefits of short laser wavelengths

Maximilian Schiester (Department of Materials Science, Montanuniversität Leoben)

21/11/2024, 09:00

This study focuses on the influence of laser wavelength and pulse energy on the elemental accuracy of atom probe tomography (APT) analysis of stoichiometric TiN coatings. By utilizing three different commercial atom probe systems — LEAP 3000X HR, LEAP 5000 XR, and LEAP 6000 XR — it is illuminated how short laser wavelengths, especially those in the deep ultraviolet (DUV) range, impact the...

29. Understanding the role of impurities in recycled Cu from EV batteries

Raymond Kwesi Nutor (Max-Planck-Institut für Nachhaltige Materialien GmbH)

21/11/2024, 09:20

Electric vehicles (EVs) are on the rise and with it, the expected number of scrap or end-of-life batteries. Since battery production from raw materials is energy-intensive and environmentally burdensome, it is economically beneficial to recycle batteries than to dispose them. However, the diverse range of cathode materials makes the recycling process complex, as the purity standards are...

20. Difficulties in the detection of interstitial atom segregation on dislocations in steels using atom probe tomography

William MOTTAY (IM2NP - Framatome)

21/11/2024, 09:40

Atom Probe Tomography (APT) can be used to analyze the structure of matter at the smallest scales, such as grain boundaries, dislocations or even atomic planes in certain special cases. As such, APT can be used to study dynamic strain-ageing in steels, which relies on the segregation of free interstitials (C and N) on dislocations. Surprisingly, very few studies regarding the segregation on...

23. Unveiling nanometric phase formation and oxidation achieved by spark plasma sintering of Zn-Mg-(Ag) alloys for bioresorbable implants

Selase Torkornoo (Max-Planck-Institut für Nachhaltige Materialien GmbH)

21/11/2024, 10:00

Zn-based alloys have considerable potential as bioresorbable scaffolds for implants. Alloying with Mg or Ag enhances both biocompatibility and mechanical properties through precipitation strengthening and grain refinement during material production. Here we seek to advance the understanding of the precipitation mechanisms in Zn-Mg-(Ag) alloys prepared by a combination of mechanical alloying...

24. Vacuum Dealloyed Brass: A Tale of Materials Development with an Electrifying Second Act

Eric Woods (MDES)

21/11/2024, 10:40

Dealloyed yellow brass (CuZn37) has demonstrated promise as a porous support medium for various applications. This study focuses on vacuum dealloying of yellow brass prepared at varying temperatures. Dealloying allows more complete zinc removal compared to chemical methods enabling the evaluation of the microstructural evolution1,2. The resultant microstructure and porosity were analyzed using...

30. Nano-scale investigation of fractal abnormal grains and grain boundaries in Pd-Au

Johannes Wild (Institute for Applied Materials (IAM-WK), Karlsruhe Institute of Technology)

21/11/2024, 11:00

Nanocrystalline (NC) Pd-Au prepared by inert gas condensation exhibits
fractal abnormal grain growth during heat treatment. The resulting
microstructure is characterized by a bimodal grain size distribution
with micrometer-sized grains (FG) embedded in a matrix of NC
grains (NG). To elucidate this unusual manifestation of grain growth,
we analyzed FG and NG bulk regions, as well
as the...

35. Microscopy of atom probe needles and how this might inform data reconstruction protocols

Claudia Fleischmann (KU Leuven, imec)

21/11/2024, 11:20

Microscopy of atom probe needles and how this might inform data reconstruction protocols