Results 51 to 60 of about 639 (160)

Couplages multi-physique et multi-échelle pour la modélisation prédictive de la combustion de matériaux énergétiques intégrés dans leur environnement [PDF]

, 2021
Cette thèse présente le développement et l'exploitation d'un modèle qui simule à la fois l'initiation et la réaction complète de propagation de nanothermites à base de poudre avec la seule prise en compte de mécanismes en phase condensée. Trois objectifs
Brotman, Sarah
core  

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

Journal 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

Interfacial Chemistry in Al/CuO Reactive Nanomaterial and Its Role in Exothermic Reaction. [PDF]

, 2013
Interface layers between reactive and energetic materials in nanolaminates or nanoenergetic materials are believed to play a crucial role in the properties of nanoenergetic systems.
Ahlrichs R., Alain Estève, Badiola C., Blobaum K. J., Blobaum K. J., Blobaum K. J., Blöchl P. E., Carole Rossi, Christophe Tenailleau, Dlott D. D., Dreizin E. L., Dudarev S. L., Eichkorn K., Ermoline A., Frank M. M., Gash A. E., Gavens A. J., Jagminas A., Jean Marie Ducéré, Jean-Francois Veyan, Jinhee Kwon, Klejna S., Kresse G., Kresse G., Kresse G., Lamagna L., Lanthony C., Lee S. Y., Malchi J. Y., Manesh N. A., Marine Petrantoni, Mehdi Bahrami, Melle-Franco M., Moore D. S., Pantoya M. L., Perdew J. P., Perdew J. P., Petrantoni M., Petrantoni M., Pierre Alphonse, Puszynski J. A., Rai A., Schoenitz M., Sierka M., Stamatis D., Tallarida M., Thornton J. A., Tillotson T. M., Umbrajkar S. M., Umbrajkar S. M., Weigend F., Weigend F., Weihs T. P., Weismiller M. R., Yves J. Chabal, Zamkov M. A., Zhang K.   +56 more
core   +2 more sources

Nanothermite composites with a novel cast curable fluoropolymer

Chemical Engineering Journal, 2021
Abstract Structural nanoenergetic (SNE) composites consisting of nanothermites dispersed in a polymer binder are attractive for combustion applications due to their substantially higher volumetric energy, density, and tailorable energy release characteristics.
Nie, Hongqi, Tan, Li Ping, Pisharath, Sreekumar, Hng, Huey Hoon   +3 more
openaire   +2 more sources

Fluctuating Flame from Suspending Ferrimagnetic Core/Shell Al@Fe3O4 Nanoparticles in a Magnetic Field

Advanced Materials Interfaces, Volume 11, Issue 29, October 15, 2024.
This article reports on the fabrication and microstructures of novel Al@Fe3O4 core–shell composite nanoparticles. Thermal analysis suggests the as‐prepared particles predominantly go through a solid‐state reaction mechanism that exhibits 30% lower activation energy compared to physically mixed nanocomposite.
Shina Maini, Anqi Wang, John Z. Wen
wiley   +1 more source

Ignition of nanothermites by a laser diode pulse

Defence Technology, 2022
Experimental investigation has been carried out for laser ignition and combustion of nanothermites based on aluminum and oxides of copper, bismuth and molybdenum. Ultrasonic mixing of nanosized powders was used to produce compositions. For thermite ignition, initiating laser pulse with a maximum intensity of 770 W/cm2 was generated by a laser diode ...
Alexander Yu. Dolgoborodov, Vladimir G. Kirilenko, Michael A. Brazhnikov, Leonid I. Grishin, Michael L. Kuskov, Georgii E. Valyano   +5 more
openaire   +2 more sources

Ti/WO3, a nanothermite for special purposes: An experimental study

Defence Technology
A new nanothermite system, composed of titanium and tungsten trioxide is reported. Initial investigations show that it has low-average sensitivity to mechanical stimuli (friction, impact), but that its sensitivity to laser irradiation can be controlled ...
Mateusz Polis, Agnieszka Stolarczyk, Konrad Szydlo, Tomasz Jarosz, Marcin Procek, Sebastian Slawski, Lukasz Hawelek   +6 more
doaj   +1 more source

Microwave Ignition of Thermites

Propellants, Explosives, Pyrotechnics, Volume 49, Issue 10-11, October 2024.
Abstract This study investigates the microwave ignition behavior of a range of thermites of aluminum, boron, titanium, and tantalum fuels with oxides of Bi2O3, CuO, and Fe2O3. In order to gain insight into the modes of energy transfer leading to ignition, thermites are heated in either a purely electric or magnetic field environment within a single ...
Justin Lajoie, Brock Jones, Adam Lawrence, Stuart Barkley, Travis Sippel   +4 more
wiley   +1 more source

Tuning the Reactivity of Nanoenergetic Gas Generators Based on Bismuth and Iodine oxidizers [PDF]

, 2019
There is a growing interest on novel energetic materials called Nanoenergetic Gas- Generators (NGGs) which are potential alternatives to traditional energetic materials including pyrotechnics, propellants, primers and solid rocket fuels.
A Chaalane, A Miziolek, A Varma, AA Shiryaev, AE Aliev, AS Rogachev, BR Clark, C Rossi, C Rossi, C Ru, CE Johnson, CS Haines, DD Dlott, EL Dreizin, FJ Arnáiz, G McDonnell, JA Puszynski, JA Puszynski, JDW Madden, JE Atwater, JL Cheng, K Sathiyanathan, K Sullivan, KS Martirosyan, KS Martirosyan, KS Martirosyan, KS Martirosyan, KT Sullivan, L Wang, M Comet, M Zhang, MA Hobosyan, MA Hobosyan, MA Hobosyan, MA Hobosyan, MA Hobosyan, MD Lima, RH Baughman, SA Yolchinyan, SH Kim, SI Fut’ko, SM Umbrajkar, VK Patel, VK Patel, W Gottardi, WL Perry, X Liu, X Zhou, Y Ding, Y Wang, Y Zhang   +50 more
core   +2 more sources

МАЛОГАЗОВЫЕ НАНОТЕРМИТЫ И ОТНОСИТЕЛЬНАЯ СИЛА ВЗРЫВА СМЕСИ Аl/MoO3 С ФТОРПОЛИМЕРОМ [PDF]

, 2022
Кратко рассмотрены распространённые и наиболее изученные нанотермитные композиции различного состава и представлены результаты экспериментального сравнения относительной силы взрыва смесей нанопорошков Al/MoO3 с фторполимером.
Валерий Викторович Малыхин, Виталий Николаевич Комов, Виталий Олегович Попов   +2 more
core   +2 more sources