Results 31 to 40 of about 1,071 (193)
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 +3 more
doaj +1 more source
Incomplete reactions in nanothermite composites. [PDF]
J Appl Phys, 2017 Exothermic reactions between oxophilic metals and transition/post transition metal-oxides have been well documented owing to their fast reaction time scales (≈10 μs). This article examines the extent of the reaction in nano-aluminum based thermite systems through a forensic inspection of the products formed during reaction.
Jacob RJ +4 more
europepmc +5 more sources
Modélisation multiéchelle de la structuration des interfaces dans les nanothermites multicouches Al/CuO déposées en phase vapeur [PDF]
, 2014 Among the diversity of energetic materials existing nowadays, nanothermites are widely studied and used thanks to their principal characteristic, the capacity to produce a great quantity of energy by the combustion of a small quantity of material.
Lanthony, Cloé
core +6 more sources
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 +3 more
wiley +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 +2 more
wiley +1 more source
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 +5 more
wiley +1 more source
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 +3 more
wiley +1 more source
Defence Technology, 2023 Energetic metal-organic complexes have been involved in nanothermites as novel oxidants. However, the existing preparation methods often lead to mixing inhomogeneity and small contact area of ingredients, the reactivity and functionality of the novel ...
Ke-xin Wang +7 more
doaj +1 more source
Energetic Materials Frontiers, 2021 Among the energetic mixtures, one category are thermites. Thermites are highly reactive composites described as consisting of a fuel (metal) and an oxidizer (metal oxide) at micron scale.
Pierre Gibot +4 more
doaj +1 more source
Synthesis and Characterization of Nanothermites for Energetic Applications [PDF]
, 2021 RÉSUMÉ: Une grande attention a été accordée au développement de nouveaux matériaux énergétiques pour atteindre les performances de plus en plus exigeantes des systèmes de propulsion à grande vitesse.
Emam, Ahmed Fahd Eltayeb
core +1 more source