Study on Indium (III) Oxide/Aluminum Thermite Energetic Composites
Thermites or composite energetic materials are mixtures made of fuel and oxidizer particles at micron-scale. Thermite reactions are characterized by high adiabatic flame temperatures (>1000 °C) and high heats of reaction (>kJ/cm<sup>3</sup>), sometimes combined with gas generation....
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-06-01
|
| Series: | Journal of Composites Science |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-477X/5/7/166 |
| _version_ | 1797528598626697216 |
|---|---|
| author | Pierre Gibot Estelle Puel |
| author_facet | Pierre Gibot Estelle Puel |
| author_sort | Pierre Gibot |
| collection | DOAJ |
| description | Thermites or composite energetic materials are mixtures made of fuel and oxidizer particles at micron-scale. Thermite reactions are characterized by high adiabatic flame temperatures (>1000 °C) and high heats of reaction (>kJ/cm<sup>3</sup>), sometimes combined with gas generation. These properties strongly depend on the chemical nature of the couple of components implemented. The present work focuses on the use of indium (III) oxide nanoparticles as oxidizer in the elaboration of nanothermites. Mixed with an aluminum nanopowder, heat of reaction of the resulting Al/In<sub>2</sub>O<sub>3</sub> energetic nanocomposite was calculated and its reactive performance (sensitivity thresholds regarding different stimuli (impact, friction, and electrostatic discharge) and combustion velocity examined. The Al/In<sub>2</sub>O<sub>3</sub> nanothermite, whose heat of reaction was determined of about 11.75 kJ/cm<sup>3</sup>, was defined as insensitive and moderately sensitive to impact and friction stimuli and extreme sensitive to spark with values >100 N, 324 N, and 0.31 mJ, respectively. The spark sensitivity was decreased by increasing In<sub>2</sub>O<sub>3</sub> oxidizer (27.71 mJ). The combustion speed in confined geometries experiments was established near 500 m/s. The nature of the oxidizer implemented herein within a thermite formulation is reported for the first time. |
| first_indexed | 2024-03-10T10:01:39Z |
| format | Article |
| id | doaj.art-6db3efd95e0f427a9abc6ba295b946e5 |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-10T10:01:39Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-6db3efd95e0f427a9abc6ba295b946e52023-11-22T01:53:41ZengMDPI AGJournal of Composites Science2504-477X2021-06-015716610.3390/jcs5070166Study on Indium (III) Oxide/Aluminum Thermite Energetic CompositesPierre Gibot0Estelle Puel1NS3E laboratory, UMR 3208 ISL/CNRS/UNISTRA, French-German Research Institute of Saint-Louis (ISL), 5 rue du Général Cassagnou, BP70034, 68301 Saint Louis, FranceFaculty of Science and Engineering, University of Toulouse III Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse, FranceThermites or composite energetic materials are mixtures made of fuel and oxidizer particles at micron-scale. Thermite reactions are characterized by high adiabatic flame temperatures (>1000 °C) and high heats of reaction (>kJ/cm<sup>3</sup>), sometimes combined with gas generation. These properties strongly depend on the chemical nature of the couple of components implemented. The present work focuses on the use of indium (III) oxide nanoparticles as oxidizer in the elaboration of nanothermites. Mixed with an aluminum nanopowder, heat of reaction of the resulting Al/In<sub>2</sub>O<sub>3</sub> energetic nanocomposite was calculated and its reactive performance (sensitivity thresholds regarding different stimuli (impact, friction, and electrostatic discharge) and combustion velocity examined. The Al/In<sub>2</sub>O<sub>3</sub> nanothermite, whose heat of reaction was determined of about 11.75 kJ/cm<sup>3</sup>, was defined as insensitive and moderately sensitive to impact and friction stimuli and extreme sensitive to spark with values >100 N, 324 N, and 0.31 mJ, respectively. The spark sensitivity was decreased by increasing In<sub>2</sub>O<sub>3</sub> oxidizer (27.71 mJ). The combustion speed in confined geometries experiments was established near 500 m/s. The nature of the oxidizer implemented herein within a thermite formulation is reported for the first time.https://www.mdpi.com/2504-477X/5/7/166nanothermitesIn<sub>2</sub>O<sub>3</sub>mechanical sensitivitieselectrostatic dischargecombustion speed |
| spellingShingle | Pierre Gibot Estelle Puel Study on Indium (III) Oxide/Aluminum Thermite Energetic Composites Journal of Composites Science nanothermites In<sub>2</sub>O<sub>3</sub> mechanical sensitivities electrostatic discharge combustion speed |
| title | Study on Indium (III) Oxide/Aluminum Thermite Energetic Composites |
| title_full | Study on Indium (III) Oxide/Aluminum Thermite Energetic Composites |
| title_fullStr | Study on Indium (III) Oxide/Aluminum Thermite Energetic Composites |
| title_full_unstemmed | Study on Indium (III) Oxide/Aluminum Thermite Energetic Composites |
| title_short | Study on Indium (III) Oxide/Aluminum Thermite Energetic Composites |
| title_sort | study on indium iii oxide aluminum thermite energetic composites |
| topic | nanothermites In<sub>2</sub>O<sub>3</sub> mechanical sensitivities electrostatic discharge combustion speed |
| url | https://www.mdpi.com/2504-477X/5/7/166 |
| work_keys_str_mv | AT pierregibot studyonindiumiiioxidealuminumthermiteenergeticcomposites AT estellepuel studyonindiumiiioxidealuminumthermiteenergeticcomposites |