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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Pauly, Christoph
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Impact of Sample Preparation Approach on Transmission Electron Microscopy Investigation of Sputtered AlNi Multilayers Used for Reactive Solderingcitations
- 2024How to achieve nanometer flat surfaces: Pulsed electrochemical machining of bulk metallic glass
- 2024RuAl Thin‐Film Deposition by DC Magnetron Sputtering
- 2023Effects of Ultrashort Pulsed Direct Laser Writing on Ni/Al Reactive Multilayer Foilscitations
- 2023A Detailed Analysis of the Microstructural Changes in the Vicinity of a Crack-Initiating Defect in Additively Manufactured AISI 316L
- 2023Impact of Microstructure of Nanoscale Magnetron Sputtered Ru/Al Multilayers on Thermally Induced Phase Formationcitations
- 2022Critical Assessment of Two-Dimensional Methods for the Microstructural Characterization of Cemented Carbides
- 2021Phase transformation and characterization of 3D reactive microstructures in nanoscale Al/Ni multilayerscitations
- 2021Phase Transformation and Characterization of 3D Reactive Microstructures in Nanoscale Al/Ni Multilayerscitations
- 2019Effect of Pretreatment on Interface Stability and Morphology of Ni/Al Hybrid Foams by in situ Microcantilever Fracture Experiment
- 2019Eutectic modification by ternary compound cluster formation in Al-Si alloyscitations
- 2019Micromechanical investigations of CVD coated WC-Co cemented carbide by micropillar compression
- 2018Investigations on micro-mechanical properties of polycrystalline Ti(C,N) and Zr(C,N) coatings
- 2017Selbstfortschreitende Reaktionen in Ru/Al/X-Multilagen
- 2016Constrained hierarchical twinning in Ru-based high temperature shape memory alloyscitations
Places of action
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article
Impact of Microstructure of Nanoscale Magnetron Sputtered Ru/Al Multilayers on Thermally Induced Phase Formation
Abstract
In this study, we report on phase formation and microstructure evolution in multiscale magnetron sputtered Ru/Al multilayers upon thermal annealing in vacuum at slow heating rates of 10 K/min. By specifically adjusting the microstructure and design of the as-deposited multilayers, the formation of certain desired phases can be tuned. We demonstrate that the synthesis of single phase RuAl thin films is possible in a very controlled manner in a solid state only via thermal activation without initiating the self-propagating exothermic reactions of Ru/Al multilayers. To investigate phase formation sequences and the resulting microstructures, Ru/Al multilayers were designed via magnetron sputtering with systematic variation of bilayer modulation periods and subsequent vacuum annealing. Thin films samples were characterized by in situ high-temperature XRD, TEM imaging and diffraction. It is shown that different phase sequences appear in strong correlation with the modulation length. Depending on the multilayer design, the phase formation toward single-phase RuAl thin films happens as either a multi-step or single-step event. In particular, below a critical threshold of the modulation period, the multi-step phase formation can be suppressed, and only the desired RuAl target phase is obtained with a pronounced growth in a preferred orientation. This finding may be versatile for the targeted synthesis of intermetallic phases, contributing to further understanding of phase formation in such nanoscale multilayer systems.