Influence of texture and microstructure on the reactivity of aluminum powders
| Autor: | Marie-Vanessa Coulet, Vasile Heresanu, Christine Leroux, Pierre-Henry Esposito, Renaud Denoyel, Véronique Madigou, T Neisius |
|---|---|
| Přispěvatelé: | Matériaux divisés, interfaces, réactivité, électrochimie (MADIREL), Aix Marseille Université (AMU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Aix-Marseille Université - Faculté des Sciences (AMU SCI), Aix Marseille Université (AMU), Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science chemistry.chemical_element 02 engineering and technology [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Grinding chemistry Aluminium 0103 physical sciences Ball (bearing) [CHIM]Chemical Sciences General Materials Science Crystallite Composite material 0210 nano-technology Thermal analysis Ball mill |
| Zdroj: | Materialia Materialia, 2020, 14, pp.100880. ⟨10.1016/j.mtla.2020.100880⟩ Materialia, Elsevier, 2020, 14, pp.100880. ⟨10.1016/j.mtla.2020.100880⟩ |
| ISSN: | 2589-1529 |
| Popis: | International audience; Aluminum powders are commonly used in energetics materials and it is possible to improve their reactivity by preparing them as nanopowders. In this article, it is shown that high-energy ball milling can be used to tune the reactivity of nanoflakes. Several nanopowders are synthesized using three different grinding ball diameters (5 mm, 10 mm and 15 mm). The powders are characterized in terms of morphology, structure and microstructure. Changing the diameter of the grinding balls results in powders with different characteristics. Among the three diameters used, an optimum is found for powders synthetized with 10 mm diameter balls: they possess the highest specific area, the smallest aluminum crystallites and the lowest amount of deformation. The reactivity of the various nanopowders, evaluated using thermal analysis under air, is shown to be dependent on both textural and microstructural properties of the powders. Such considerations on the microstructural properties of nanopowders are of utmost importance in the quest for the best materials for energetics applications. |
| Databáze: | OpenAIRE |
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