Results 31 to 40 of about 639 (160)

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

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

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

A Review of the Catalytic Effects of Lead‐Based Ballistic Modifiers on the Combustion Chemistry of Double Base Propellants

Propellants, Explosives, Pyrotechnics, Volume 46, Issue 1, Page 13-25, January 2021., 2021
Abstract Lead‐based compounds are the current industry‐standard ballistic modifier for double‐base propellants, but there is a pressing need for alternatives as incoming European legislation will soon ban their use. This review article introduces the main concepts and terminologies in the combustion chemistry of double‐base propellants, and critically ...
Lisette R. Warren, Zixuan Wang, Colin R. Pulham, Carole A. Morrison   +3 more
wiley   +1 more source

Electrophoretic Deposition of Superhydrophobic Al/Fe2O3 Nanothermite with Long–Term Storage Stability

International Journal of Electrochemical Science, 2020
In this study, a superhydrophobic Al/Fe2O3 nanothermite with long–term storage stability was prepared by electrophoretic deposition of nano–Al particles and nano– Fe2O3 microboxes on Ti substrate and subsequent modification process.
Haibing Zhang, Haitao Wu, Peng Xu, Zidong Li, Wuyang Zhang, Huixian Huang, Qing Zhou, Xingui Yue, Jiankang Bao, Xueming Li   +9 more
doaj   +1 more source

Thermal and combustion behavior of Al-MnO2 nanothermite with poly(vinylidene fluoride -co- hexafluoropropylene) energetic binder

Defence Technology, 2021
Fluoropolymers get increasing attention in energetic materials application due to the high fluorine content. To explore the effect of poly(vinylidene fluoride -co- hexafluoropropylene) (P(VDF-HFP)) on Al/MnO2 nanothermite, the samples with different ...
Jia-xing Song, Tao Guo, Miao Yao, Jia-lin Chen, Wen Ding, Feng-li Bei, Xiao-nan Zhang, Qin Yin, Jun-yi Huang, Chang-hao Li   +9 more
doaj   +1 more source

Synthesis process of nanowired Al/CuO thermite. [PDF]

, 2010
Al/CuO nanothermites were fabricated by thermal oxidation of copper layer at 4501C for 5 hand by aluminum thermal evaporation: thermal evaporation allows producing thin layer less than 2 mminsize.
Alphonse, Pierre, Bourrier, David, Conédéra, Véronique, Petrantoni, Marine, Rossi, Carole, Tenailleau, Christophe   +5 more
core   +2 more sources

3D ordered macroporous NiO/Al nanothermite film with significantly improved higher heat output, lower ignition temperature and less gas production [PDF]

, 2016
The performances of nanothermites largely rely on a meticulous design of nanoarchitectures and the close assembly of components. Three-dimensionally ordered macroporous (3DOM) NiO/Al nanothermite film has been successfully fabricated by integrating ...
Chao, Yimin, Cheng, Jia, Qin, Zhichun, Shen, Ruiqi, Xu, Xing, Ye, Jiahai, Yu, Chunpei, Zhang, Wenchao   +7 more
core   +1 more source

Thrust characteristics of nano-carbon/Al/oxygenated salt nanothermites for micro-energetic applications

Defence Technology, 2023
Combustion within small motors is key in the application-specific development of nanothermite-based micro-energetic systems. This study evaluates the performance of nanothermite mixtures in a converging-diverging nozzle and an open tube.
Ahmed Fahd, Alex Baranovsky, Charles Dubois, Jamal Chaouki, Sherif Elbasuney, Shady Shokry   +5 more
doaj   +1 more source