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Poster

WEB Effect of preparation angle on atom probe tomography of reactive multilayers

Thursday (27.02.2020)
12:19 - 12:19 Poster Room
Part of:
Line-Up:
- Poster *web*Smoothing of additive manufactured parts using ns-pulsed laser source 1 Dipl.-Ing. Florian Kuisat
- Poster TBA -
- Poster *web*Combustion Synthesis of High Entropy Alloys thin films 1 Dr. Anni Wang
- Poster *web*Surface macro-smoothing and micro-structuring of additive manufactured components by using DLIP technique for controlling wetting characteristics 1 Dipl.-Ing. Florian Kuisat
- Poster *web*Influence of embedding materials on heat transfer and ignition transfer time in heterogeneous reactive material system 1 Mostafa Baloochi
- Poster TBA -
- Poster *web*Self reactive joining process with multilayer foils in lap joint configuration 1 Marcus Glaser
- Poster *web*Thermodynamics and kinetics of phase formation in magnetron-sputtered Ni/Al multilayer thin films with nanoscale morphology 1 Sascha Sebastian Riegler
- Poster *web*Femtosecond laser approach to cut Ni/Al reactive foils without ignition of a self-propagation reaction 1 Maria Amelia Martins
- Poster *web*Effect of preparation angle on atom probe tomography of reactive multilayers 1 Christian Schäfer
- Poster *web*Reactive Ni/Al multilayers with 3D Morphologies 1 Konrad Jaekel
- Poster *web*Synchrotron radiation X-ray powder diffraction and magnetometric study of natural and synthetic terms of the stannite-kesterite pseudobinary system in the low temperature regime (5-275 K) 1 Dr. Francesco Di Benedetto
- Poster *web*Coating and Drying of Sodium-Ion-Battery Electrodes 1 Julian Klemens
- Poster *web*Analytical prediction model for Direct Laser Interference Patterning 1 Dr. Bogdan Voisiat
- Poster *web*CFD Analysis of joining processes using reactive multilayers on native surface morphologies of microelectronic substrates 1 Erik Wiss
- Poster *web*Top-Hat profile in Direct Laser Interference Patterning: Is it worth it? 1 Mikhael El-Khoury
- Poster *web*Tailoring the microstructure of electrodes for lithium-ion batteries to improve energy and power density 1 Jens Sandherr
- Poster *web*Microstructure investigation of superconducting NbN thin films on copper 1 Dipl.-Ing. Ying Li
- Poster TBA -
- Poster *web*Laser functionalized PEEK-based coating systems to minimize friction and wear 1 Dr. Tim Kunze
- Poster *web*Structure and Dynamics in a Layered Na-ion Battery Cathode 1 Euan Bassey
- Poster *web*Electrode-Processing using porous nano-structured Na3V2(PO4)3 (NVP) for Sodium-Ion Batteries 1 Luca Schneider
- Poster TBA -
- Poster *web*Experimental Approach for Phase Diagram determination of Li alloys 1 Joel Fels
- Poster *web*Process Integration of Few-Layer MoS2 into a-Si:H Heterojunction pin-Photodiodes for extended Infrared Detection 1 Charles Otieno Ogolla
- Poster *web*Ti3SiC2- and Ti3AlC2-based ceramics synthesis by spark plasma sintering of preceramic paper 1 Elizaveta Sedanova
- Poster *web*Overheating microstructural study of nickel-based superalloys from turbine blades of aircraft engines 1 Dr. Ana Pastor
- Poster *web*Electrochemical thermodynamics of Lithium Batteries and their materials 1 Prof. Dr. Hans Jürgen Seifert
- Poster *web*Corrosion Analysis of a 316L Stainless Steel Gas Outlet Sealed with a Copper Ring Used in the CO2 Methanation Process 1 Ananya Prechavut
- Poster *web*Self-propagating reaction of structured reactive Al/Ni multilayers 1 Yesenia Sauni
- Poster *web*3D structured electrodes for Li-ion batteries using open porous metal foams as current collector for high energy application 1 Jonas Oehm
- Poster *web*Novel air stable single source precursor for homogeneous crystalline TiS2 thin films 1 Anja Sutorius
- Poster *web*Synthesis of nickel-copper composite with controllable nanostructure through facile solvent control as positive electrode for high-performance supercapacitors 1 Dr. Damin Lee
- Poster *web*Towards understanding response generation in conductometric gas sensors 1 Stefan Kucharski
- Poster Effects of 3D electrode design on high-energy silicon-graphite anode materials 1 Yijing Zheng

Session -F: Functional Materials, Surfaces, and Devices
Belongs to:
Topic X: Poster Session


Regarding self-propagating reactions in reactive multilayers, the morphological signature of the starting material plays a significant role for the processes taking place within the reaction front on the one hand and the evolution of the product phase microstructure on the other hand. Therefore, an extensive characterization of the unreacted material is necessary in order to understand which morphological parameters beyond the bilayer thickness of a multilayer affects the self-propagating reaction. On the near-atomic level, atom probe tomography (APT) is a powerful technique to measure local concentrations at the interfaces between the different layers.

However, analyzing multilayers via APT can be very challenging. Especially regarding Ru/Al and Ni/Al multilayers, the high mechanical stresses caused by the external electrical field in combination with large differences in the fields for evaporation (Ru ~ 41 V nm-1, Ni ~ 35 V nm-1, Al ~ 19 V nm-1) can lead to the rupture of the samples. Furthermore, these differences in the evaporation field strengths as well as the morphological roughness known for this system may result in misaligned atom positions at the reconstructed interfaces or artifacts with respect to the depth coordinates of the ions.

Depending on the orientation of the interfaces between the individual multilayers to the main axis of the sample tip, the above mentioned reconstruction artifacts could be minimized while maintaining good mechanical stability. For this reason in this work several sample types with different angles between the bilayer interfaces and the main axis of the sample tips are prepared with FIB/SEM and systematically investigated with APT. The reconstructed data sets are presented and compared with TEM images with regard to possible artifacts.

Speaker:
Christian Schäfer
Saarland University
Additional Authors:
  • Dr. Christoph Pauly
    Saarland University
  • Prof. Dr. Frank Mücklich
    Saarland University
  • Dr. Michael Stüber
    Karlsruher Institut für Technologie (KIT)