DataVXAdvanced Engineering MaterialsPaper
journal article·2025-02Open access

Influence of Additional Intermediate Thick Al Layers on the Reaction Propagation and Heat Flow of Al/Ni Reactive Multilayers

Konrad Jaekel, Juan Jesús Jiménez, Sascha Sebastian Riegler, Sebastian Matthes, Marcus Glaser, Jean Pierre Bergmann, Peter Schaaf, Isabella Gallino, Francisco Miguel Morales, Jens Müller, Heike Bartsch

Advanced Engineering Materials· Volume 27· Issue 3
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Source abstract

Abstract

This study investigates the effects of sputtering and electron beam evaporation (e‐beam) on the microstructure and reactive properties of Al/Ni reactive multilayers (RMLs). The intermixing zone, a critical factor influencing reaction kinetics, is characterized using high‐resolution transmission electron microscopy and found to be consistently 3 nm for both fabrication methods. Differential scanning calorimetry reveals that e‐beam samples, with thicker Al layers, exhibit slightly higher total molar enthalpy and maintain high reaction temperatures despite reduced reaction velocities in comparison to sputtered samples. X‐ray diffraction confirms the formation of both Al3Ni2 and AlNi phases in the e‐beam samples. These findings indicate that while thicker bilayer structures reduce reaction velocity, they keep thermal output and mitigate the impact of intermixing zones, leading to similar total molar enthalpy. This analysis underscores the significance of deposition technique and bilayer thickness in optimizing the performance of Al/Ni RML, offering the possibility to establish different phase formations in thicker RML. It advances the control over the reactive properties of RMLs in their applications, for example, reactive bonding.
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Research context

Materials processing

OpenAlex topics: Intermetallics and Advanced Alloy Properties · Aluminum Alloys Composites Properties · MXene and MAX Phase Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Electrical Engineering and Information Technology Institute of Micro‐ and Nanotechnologies MacroNano Electronics Technology Group Technische Universität Ilmenau (TU Ilmenau) Gustav‐Kirchhoff‐Str. 1 98693 Ilmenau Germany

IMEYMAT: Institute of Research on Electron Microscopy and Materials University of Cádiz 11510 Puerto Real Cádiz Spain

Department of Materials Science and Metallurgical Engineering Inorganic Chemistry Faculty of Sciences University of Cádiz 11510 Puerto Real Cádiz Spain

Institute for Metallic Materials Saarland University Campus C6. 3 66123 Saarbrücken Germany

Chair of Materials for Electrical Engineering and Electronics Institute of Materials Science and Engineering Institute of Micro and Nanotechnologies MacroNano TU Ilmenau Gustav‐Kirchhoff‐Str. 5 98693 Ilmenau Germany

Production Technology Group Institute of Micro and Nanotechnologies MacroNano TU Ilmenau Gustav‐Kirchhoff‐Platz 2 98693 Ilmenau Germany

Department of Materials Science and Engineering Metallic Materials TU‐Berlin Ernst‐Reuter‐Platz 1 10587 Berlin Germany

Funding

Deutsche Forschungsgemeinschaft

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