Synthesis and characterization of Ti/Al reactive multilayer films with various molar ratios

Sen, Seema; Lake, Markus; Wilden, J.; Schaaf, Peter

doi:10.1016/j.tsf.2017.04.012

Cited by 16 publications

(5 citation statements)

References 29 publications

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“…In the field of systems with elemental components (reactions of synthesis from elements), research also continues. Some new results were obtained for methods of ignition of high‐exothermic Al/Pt foils by pulsed‐laser irradiation and features of low‐exothermic Ti/Al RMNFs with tuned layers thickness . Interesting results were obtained for magnetron sputtered deposited ternary reactive films with two different multilayer arrangements of Ti/Si/Ti/Al and Si/Ti/Al/Si with the identical bilayer of 29 ± 5 nm and total thickness of 6 μm .…”

Section: Experimental Study Of the Shs Process In Ni/al Rmnfsmentioning

confidence: 99%

SHS in Ni/Al Nanofoils: A Review of Experiments and Molecular Dynamics Simulations

et al. 2018

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Non-isothermal processes in nanometric metallic multilayers are reviewed, both experimentally and theoretically. The Ni/Al nanofoil is considered as a model system. On the one hand, the experimental methods of elaboration and analysis are presented and, on the other hand, the modeling approach at the macroscopic and atomic scale. The basic experimental features are reported together with recent achievements. Molecular dynamics investigation of the reactivity of Ni/Al systems is reported for bulk systems and nanosystems including nanoparticles, nanowires, nanofilms, and multilayers. The focus is on atomic-scale modeling versus experiments. Molecular dynamics approaches allow us to elucidate the mechanisms of nonisothermal processes occurring in nanoscale systems, such as phase transformations and self-propagation reactions.

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Section: Experimental Study Of the Shs Process In Ni/al Rmnfsmentioning

confidence: 99%

SHS in Ni/Al Nanofoils: A Review of Experiments and Molecular Dynamics Simulations

et al. 2018

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“…The exothermic reaction propagates along the foil without any further energy supply. The propagation velocity of the reaction is up to 3 m/s 5,6 . The overall reaction temperature is higher than the melting temperature of Al (T m = 660 • C (933 K)) and lower than the melting temperature of Ti (T m = 1650 • C (1923 K)).…”

Section: Introductionmentioning

confidence: 99%

Reactivity of the Ti–Al system: Experimental study and molecular dynamics simulations

Bizot

Politano

Непапушев

et al. 2020

Journal of Applied Physics

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The reactivity of the Ti-Al system was investigated experimentally in the case of reactive laminated particles produced by High Energy Ball Milling. The ignition temperature for self-sustaining reaction was measured as a function of the heating rate. By means of the Kissinger analysis, two activation energies were evaluated. The first one is associated to the solid state transformation at interface below the melting point of Al. The second one corresponds to the exothermic dissolution of Ti into Al liquid together with the formation of TiAl 3 . A complementary microscopic approach was developed in order to detect all elemental processes associated the reactivity of the Ti-Al system in composite materials.Above the melting temperature of Al, the exothermic dissolution of Ti into the liquid layer starts and induces a self-sustaining behavior until the reaction is complete. The dissolution step is limited by the low solubility of Ti in Al. The formation of the intermetallic compound TiAl 3 was observed. The microscopic analysis of the dissolution at interface explains some specific features of reactive particles.

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“…The voltage and current lines decrease again after 5 and 10µs, respectively, followed by a horizontal constant (original value). These results demonstrate that during this process, the bridge region rapidly fused and gasi ed into luminescent plasma, and that the action process of both is electro-induced plasma explosion [17][18][19]. Fig.…”

Section: Testingmentioning

confidence: 61%

Preparation and Ignition Properties of Tantalum Nitride Thin-Film Energy Transducers

Ren¹,

Yu²,

Xie³

et al. 2022

Preprint

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Tantalum nitride (TaN) has excellent electrical properties that can be used as an energy transducer in the ignition field. In this study, TaN film transducers with different bridge parameters were designed and fabricated in an attempt to reduce its energy consumption. The ignition sensitivity of the film transducers was tested using the Langley method. The results revealed that the ignition voltage is the lowest when the thickness of the film is 0.9 µm. If the thickness and length of the bridge film are fixed, the ignition voltage of the transducer first decreases and then increases with the width of the bridge film increases. When the thickness and width of the bridge film are fixed, the ignition voltage of the transducer is first decrease and then increase with the length of the bridge film increases. We also evaluated the ignition mechanism of TaN film transducers. By comparing the performance of TaN, semiconductor bridge (SCB), and nickel–chromium (Ni–Cr) film transducers, the TaN and SCB transducers are proven to have similar ignition performances, which are better than the Ni–Cr transducer. The negative temperature coefficient of TaN and the positive feedback after the initial electrothermal ignition promoted the growth and strengthening of plasma in the bridge film, allowing the medicament to ignite quickly. When the feasibility of the process and the influence of the bridge film parameters on ignition sensitivity are considered, the preferred design parameters of the transducer are a thickness of 0.9 µm and a bridge film size of 0.3 mm×0.3 mm. This study shows that TaN can be utilized as a high-performance transducer.

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Synthesis and characterization of Ti/Al reactive multilayer films with various molar ratios

Cited by 16 publications

References 29 publications

SHS in Ni/Al Nanofoils: A Review of Experiments and Molecular Dynamics Simulations

SHS in Ni/Al Nanofoils: A Review of Experiments and Molecular Dynamics Simulations

Reactivity of the Ti–Al system: Experimental study and molecular dynamics simulations

Preparation and Ignition Properties of Tantalum Nitride Thin-Film Energy Transducers

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