Topic
Reactive material
About: Reactive material is a research topic. Over the lifetime, 446 publications have been published within this topic receiving 5439 citations.
Papers published on a yearly basis
1 / 2
Papers
TL;DR: In this paper, the thermal degradation behavior of Teflon and nanometer scale Al particles compared with micron-scale Al particles was examined in an argon environment on both nanometer and micron scale particulate mixtures revealing lower ignition temperatures and larger exothermic activity for the nanometer Al/Teflon mixture.
Abstract: Reactive mixtures of aluminum (Al) and polytetrafluoroethylene (PTFE or Teflon) have applications in propellants, explosives, and pyrotechnics. This study examines the thermal degradation behavior of Teflon and nanometer scale Al particles compared with micron-scale Al particles. Differential scanning calorimetry and thermo-gravimetric analyses were performed in an argon environment on both nanometer and micron scale particulate mixtures revealing lower ignition temperatures and larger exothermic activity for the nanometer Al/Teflon mixture. This increased ignition sensitivity and exothermicity is caused by a pre-ignition reaction unique to the nano-Al mixture. Experiments suggest that the pre-ignition reaction mechanism is controlled by the fluorination of the Al particle passivation shell. Micron-scale Al particles have a lower specific surface area and therefore the influence of the passivation shell promoting a pre-ignition reaction is reduced. Chemical kinetics are discussed along with parti...
232 citations
Patent•
5 Mar 2003
TL;DR: In this article, a method for forming a ternary thin film using an atomic layer deposition process is described, where a first and a second reactive material are supplied to a chamber containing a wafer, the first and second reactive materials being adsorbing on a surface of the wafer and supplying a first gas to the chamber to purge the reactive materials that remain unreacted and a byproduct.
Abstract: A method for forming a ternary thin film using an atomic layer deposition process includes supplying a first and a second reactive material to a chamber containing a wafer, the first and second reactive materials being adsorbing on a surface of the wafer, supplying a first gas to the chamber to purge the first and second reactive materials that remain unreacted, supplying a third reactive material to the chamber to cause a reaction between the first and second reactive materials and the third reactive material to form a thin film monolayer, supplying a second gas to purge the third reactive material that remains unreacted and a byproduct, and repeating the above steps for forming the thin film monolayer a predetermined number of times to form a ternary thin film having a predetermined thickness on the wafer. Preferably, the ternary thin film is a SiBN film.
186 citations
TL;DR: A review of metal-fluorinated oxidizer composites for pyrotechnic applications can be found in this paper, with a brief discussion of the reaction mechanisms expected to govern ignition and combustion.
158 citations
TL;DR: In this article, the polymer-based reactive material fragment/target interactions are investigated, and a series of ballistic experiments are conducted to analyze the influence quantitatively, and the venting effects are also considered.
Abstract: Reactive material fragment is an extremely efficient damage enhancement technology that incorporates the defeat mechanisms of kinetic energy and chemical energy. In this paper, the polymer-based reactive material fragment/target interactions are investigated. Related dynamic testing techniques for energy release characteristics of reactive material fragments are presented, and a series of ballistic experiments is conducted. The results show the reactive material fragment, which perforates the closed test chamber, undergoes a violent chemical reaction under highly dynamic loads and releases great amounts of thermo-chemical energy on the interior. The impact-initiated process and energy release behavior are markedly influenced by the impact velocity, indicating the material’s fracture is of importance to the reaction. A relationship between the maximum pressure inside the chamber and the reaction efficiency is derived to analyze the influence quantitatively, and the venting effects are also considered.
123 citations
TL;DR: In this article, a modified type-12 impact tester is used to measure the impact induced ignition of nano-aluminum particle composites that also include Ni, MoO3, or Teflon.
113 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 5 |
| 2024 | 22 |
| 2023 | 36 |
| 2022 | 49 |
| 2021 | 43 |
| 2020 | 38 |