Results 21 to 30 of about 581 (155)

Three-dimensionally Ordered Macroporous Structure Enabled Nanothermite Membrane of Mn2O3/Al. [PDF]

Sci Rep, 2016
Mn2O3 has been selected to realize nanothermite membrane for the first time in the literature. Mn2O3/Al nanothermite has been synthesized by magnetron sputtering a layer of Al film onto three-dimensionally ordered macroporous (3DOM) Mn2O3 skeleton.
Zheng G, Zhang W, Shen R, Ye J, Qin Z, Chao Y.   +5 more
europepmc   +2 more sources

Spark Desensitization of Nanothermites via the Addition of Highly Electro-Conductive Carbon Particles

C, 2022
In the past decade, the formulation of spark-desensitized nanothermites has considerably advanced, making them safe to handle. When ignited, these materials reveal impressive properties such as high temperatures (>1000 °C), intense heat releases (>kJ/cm3)
Pierre Gibot
doaj   +1 more source

Afterburn modeling of nanothermite composites [PDF]

AIP Conference Proceedings, 2020
The Jones-Wilkins-Lee (JWL) EOS is widely used to capture detonation energy release but not the energy release from secondary combustion, or afterburn. To account for the burn mechanism of detonation products with that of combustion, the JWL EOS had been extended such as in the work of Miller[1], whose reactive flow model for highly non-ideal ...
Chan Hay Yee Serene, Muhamed Suceska, Zhang Qingling, Yeo Kwee Liang, Hng Huey Hoon   +4 more
openaire   +1 more source

Combustion characteristic and aging behavior of bimetal thermite powders

Defence Technology, 2021
Nanothermites have been employed as fuel additives in energetic formulations due to their higher energy density over CHNO energetics. Nevertheless, sintering and degradation of nanoparticles significantly limit the practical use of nanothermites. In this
Hong-qi Nie, Hay Yee Chan, Sreekumar Pisharath, Huey Hoon Hng   +3 more
doaj   +1 more source

Multi‐Material Aerosol Jet Printing of Al/Cuo Nanothermites for Versatile Fabrication of Energetic Antennas

Advanced Functional Materials, Volume 33, Issue 49, December 1, 2023., 2023
A multi‐material aerosol jet printing system is introduced for the in situ mixing of a nanoscale thermite comprised of aluminum and copper (II) oxide particles. The high resolution patterning enables precise integration with printed electronics, exemplified by an energetic antenna tuned to 2.45 GHz with low ignition delay, while the digital control ...
Livio Gamba, Justin A. Lajoie, Travis R. Sippel, Ethan B. Secor   +3 more
wiley   +1 more source

Fast reactions of shocked energetic microporous metallic composites

Propellants, Explosives, Pyrotechnics, Volume 48, Issue 10, October 2023., 2023
Abstract Metal/oxidizer composites can potentially release more energy than organic explosives such as HMX (1,3,5,7‐Tetranitro‐1,3,5,7‐tetrazocane), but are generally unsuitable for high‐performance explosives due to slow energy release. These composites have physically separated fuel and oxidizer components, and their energetic combustion reactions ...
Siva Kumar Valluri, Lawrence Salvati III, Edward L. Dreizin, Dana D. Dlott   +3 more
wiley   +1 more source

Unexpected enhanced reactivity of aluminized nanothermites by accelerated aging [PDF]

Chemical Engineering Journal, 2021
Abstract 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 ...
Wu, Tao, Lahiner, Guillaume, Tenailleau, Christophe, Reig, Benjamin, Hungría, Teresa, Estève, Alain, Rossi, Carole   +6 more
openaire   +3 more sources

High‐Speed, microwave ignition: Antenna igniters with frequency and bandwidth selectivity

Propellants, Explosives, Pyrotechnics, Volume 48, Issue 8, August 2023., 2023
Abstract This effort demonstrates the development of (1) dielectric breakdown igniters and (2) bridgewire igniters powered by half‐wavelength dipole microwave microstrip antennas with bandwidth selectivity for use in standoff ignition applications. Dielectric igniters utilized a dielectric epoxy filled with up to 30 wt.
Justin A. Lajoie, Stuart J. Barkley, Travis R. Sippel   +2 more
wiley   +1 more source

Thermal decomposition behavior and kinetic study of nitrocellulose in presence of ternary nanothermites with different oxidizers

FirePhysChem, 2023
Nanothermites have recently attracted a great deal of interest in both military and civilian domains owing to their capability of igniting or exploding and releasing a significant quantity of heat via a redox reaction.
Slimane Bekhouche, Djalal Trache, Hamdane Akbi, Amir Abdelaziz, Ahmed Fouzi Tarchoun, Hassane Boudouh   +5 more
doaj   +1 more source

Thermal and combustion behaviors of aluminum/manganese dioxide/fluoroelastomer terpolymer nanothermite

Engineering Reports, Volume 5, Issue 4, April 2023., 2023
Poly(VDF‐ter‐HFP‐ter‐TFE) terpolymer works as binder among components before the reaction. The content of terpolymer affects the thermal processes and residues directly. Terpolymer can reduce ignition energy threshold. Terpolymer can increase combustion duration time.
Jiaxing Song, Fei Duan, Jialin Chen, Guannan Wang, Quanwei Tian, Jingkai Feng   +5 more
wiley   +1 more source