Results 41 to 50 of about 1,071 (193)

Mechanical Desensitization of an Al/WO3 Nanothermite by Means of Carbonaceous Coatings Derived from Carbohydrates

open access: yesC, 2019
Nanothermites show great developmental promise in the near future in civilian, military and aerospace applications due to their tuneable reactive properties (ignition delay time, combustion velocity and pressure release).
Pierre Gibot   +5 more
doaj   +1 more source

Positive effects of PVP in MIC: Preparation and characterization of Al-Core heterojunction fibers

open access: yesDefence Technology, 2023
The core-shell metastable intermolecular composites (MIC) have attracted much attention in the past few years due to their unique properties. Here, the preparation of Al-Core heterojunction fibers using PVP as a template is proposed.
Fuwei Li   +8 more
doaj   +1 more source

Probing the ignition mechanism of aluminum nanothermites [PDF]

open access: yes, 2012
Nanothermites are defined as intimate mixtures of metal and metal oxidizer particles usually below 100 nm in diameter. They belong to a class of energetic materials which have been of recent interest due to their high amounts of stored energy, and their ...
Chowdhury, Snehaunshu
core   +1 more source

La synthèse et la caractérisation des nanothermites et de leurs précurseurs

open access: yes, 2023
Nanothermites have attracted attention as “next generation” or “green alternative” energetic materials. The advantages of nanothermites include the ability to alter the fuel and oxidizer ratio, options of different fuels and oxidizers, and the ...
Liu, Wan Lin Yvette
core   +1 more source

Engineered Porosity-Induced Burn Rate Enhancement in Dense Al/CuO Nanothermites

open access: yesACS Applied Energy Materials, 2022
This work investigates the combustion of porous Al/CuO thermites, i.e. nanolaminates fabricated with various densities of micron sized air-filled pores in the range of 0 20 vol%.
T. Wu   +6 more
semanticscholar   +1 more source

Charge‐Dipole Acceleration of Polar Gas Molecules towards Charged Nanoparticles: Involvement in Powerful Charge‐Induced Catalysis of Heterophase Chemical Reactions and Ball Lightning Phenomenon

open access: yesJournal of Nanomaterials, Volume 2010, Issue 1, 2010., 2010
In humid air, the substantial charge‐dipole attraction and electrostatic acceleration of surrounding water vapour molecules towards charged combustible nanoparticles cause intense electrostatic hydration and preferential oxidation of these nanoparticles by electrostatically accelerated polar water vapour molecules rather than nonaccelerated nonpolar ...
Oleg Meshcheryakov, Donglu Shi
wiley   +1 more source

Préparation de nanothermites réactives désensibilisées

open access: yes, 2022
Safer handling of sensitive energetic materials is the main concern of nanothermites development. These compositions, made from a metal oxide and a metallic fuel, show interesting reactive properties but also an extreme sensitivity to ...
Goetz, Virginie
core  

Thermal behavior and combustion performance of Al/MoO3 nanothermites with addition of poly (vinylidene fluorine) using electrospraying

open access: yesMaterials Research Express, 2020
To investigate the effect of the addition of poly (vinylidene fluoride) (PVDF) on nanothermites, Al/MoO _3 /PVDF energetic nanocomposites were prepared using electrospraying method. As a control group, Al/MoO _3 was also designed. Then, both samples were
Jialin Chen   +7 more
doaj   +1 more source

Pyrotechnic Oxidizer Chemistry: Study-Normalized Performance Comparison and Bibliometric Mapping

open access: yesApplied Sciences
Modern pyrotechnic materials are evolving from conventional fuel–oxidizer mixtures toward function-oriented energetic systems designed for controlled ignition, light emission, gas generation, pressure output and thermal response.
Kaster Kamunur   +6 more
doaj   +1 more source

Comparison of Performance of Fast-Reacting Nanothermites and Primary Explosives

open access: yes, 2017
International audienceThe main features of nano‐sized thermites are reviewed with the purpose to compare the performance of most reactive nanothermites showing high combustion front velocities of up to 2500 m s −1 with that of primary explosives. Because
Veyssiere, Bernard   +7 more
core   +1 more source

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