Thermite materials allow, once ignited, to release a great amount of chemical energy, stored in metastable structures where coexist an oxidizing material (typically a metal oxide) and a reducing material (typically aluminum). Thermite nanolaminates, alternative layer of oxidizer and fuel, offer a highly controllable architecture and have been...
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May 21, 2021 (v1)PublicationUploaded on: December 3, 2022
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November 2018 (v1)Report
National audience
Uploaded on: December 4, 2022 -
November 26, 2017 (v1)Conference paper
Energetic materials are the only attractive sources of " dormant " energy, enjoying long shelf life (decades), that can deliver quick on-demand bursts of energy in the form of heat and/or pressure. Among the large variety of energetic materials, reactive nanocomposites, based on exothermic thermite reactions, have attracted great attention over...
Uploaded on: February 28, 2023 -
October 2020 (v1)Journal article
The paper reports a joint experimental/theoretical study on the aging of reactive Al/CuO nanolaminates, investigating both structural modifications and combustion properties of aged systems. We first show theoretically that the long-term storage (over several decades) in ambient temperature marginally affects nanolaminates structural properties...
Uploaded on: December 4, 2022 -
July 2019 (v1)Journal article
The complex Al/CuO self-propagating reaction involving multi-phase and multi-species dynamics was studied in order to investigate the very high flame temperature around the vaporization temperature of alumina, even under a neutral environment. Experiments were performed on different sputter-deposited Al/CuO multilayers coupling optical...
Uploaded on: December 4, 2022 -
August 2021 (v1)Journal article
We examine the thermal aging of four Al based thermites chosen among the most commonly used in microenergetic systems: Al/CuO, Al/Fe2O3, Al/Fe3O4 and Al/Co3O4. For each nanothermite system, we applied the modified Friedmann isoconversional method from DSC signals to calculate the kinetic parameters of reactions and the function of the reaction...
Uploaded on: December 4, 2022 -
March 2019 (v1)Journal article
Sputter-deposited Al/CuO multilayers capable of highly energetic reactions have been the subject of intense studies for tunable initiation and actuation. Designing high performance Al/CuO-based initiator devices definitively requires reliable prediction of their ignition and reaction kinetics including self-heating or aging as a function of...
Uploaded on: December 4, 2022 -
January 2017 (v1)Journal article
The ignition of Al/CuO multilayered material is studied experimentally to explore the effect of heating surface area, layering and film thickness on the ignition characteristics and reaction performances. After the description of the micro-initiator devices and ignition conditions, we show that the heating surface area has to be properly...
Uploaded on: February 28, 2023 -
October 21, 2017 (v1)Journal article
International audience
Uploaded on: February 28, 2023 -
April 2, 2018 (v1)Journal article
Sputter-deposited Al/CuO multilayers exhibit fast combustion reactions in which an exothermic chemical reaction wave -controlled by the migration of oxygen atoms from the oxide matrix towards the aluminum layers through interfacial layers- moves throughout the multilayer at subsonic rates (m/s to tens of m/s). We directly observed the...
Uploaded on: February 27, 2023