Effect of Substrate–Induced Localized Stress on the Combustion Properties of Al/CuO Reactive Multilayer Films
| Autor: | Pascal Dubreuil, Baptiste Julien, Ludovic Salvagnac, Claudie Josse, Sylvain Pelloquin, Alain Estève, Carole Rossi |
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| Přispěvatelé: | Équipe Nano-ingénierie et intégration des oxydes métalliques et de leurs interfaces (LAAS-NEO), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Service Techniques et Équipements Appliqués à la Microélectronique (LAAS-TEAM), Centre de microcaractérisation Raimond Castaing (CMCR), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), Centre de microcaractérisation Raimond Castaing (Centre Castaing), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Scanning electron microscope 02 engineering and technology Substrate (electronics) Combustion Stress 01 natural sciences [SPI.MAT]Engineering Sciences [physics]/Materials Stress (mechanics) Thermal conductivity 0103 physical sciences Multilayer Materials Chemistry Thin film Composite material Reactive thin film Energy electron loss spectroscopy 010302 applied physics Combustion velocity Metals and Alloys Surfaces and Interfaces 021001 nanoscience & nanotechnology Surfaces Coatings and Films Electronic Optical and Magnetic Materials Adiabatic flame temperature Aluminum/cupric oxide Thermite Nanometre 0210 nano-technology Plasma-enhanced chemical vapour deposition |
| Zdroj: | Thin Solid Films Thin Solid Films, Elsevier, 2021, 740, pp.139000. ⟨10.1016/j.tsf.2021.139000⟩ Thin solid films Thin Solid Films, 2021, 740, pp.139000. ⟨10.1016/j.tsf.2021.139000⟩ |
| ISSN: | 0040-6090 |
| Popis: | International audience; Reactive multilayer films are a high energy dense configuration for energetics widely studied for various pyrotechnic applications. The objective of this study is to investigate the influence of substrate-induced localized stress on the combustion properties of Al/CuO reactive thin films. Square microbumps are patterned on glass substrates to serve as embedded stressor elements. Stress-induced structural or morphological changes of the materials deposited around the microbumps are characterized using high-magnification transmission and scanning electron microscopy, providing simultaneous nanometer imaging resolution and detailed chemical analysis. The structural and chemical changes (appearance of reactant intermixing and voids) around the microbumps modify the energetic reservoir and the thermophysical properties of the film. The heat of reaction, the flame temperature and the effective thermal conductivity of the film are altered (loss of ~15%), leading to a global decrease in the material reactivity. The flame velocity of the film deposited on the substrate with microbumps drops by 9.2%, 32.4% and 48.7% for microbump heights of 0.15, 0.35 and 0.83 µm, respectively. This work helps deepen the understanding of the effect of stress-induced strain on reactive film combustion properties and provides perspectives for controlling the reaction of reactive thin films by tailoring the strain distributions within the films. |
| Databáze: | OpenAIRE |
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