Exploring enhanced reactivity of nanosized titanium toward oxidation

Muravyev, Nikita V.; Моногаров, Константин А.; Жигач, А. Н.; Кусков, М. Л.; Fomenkov, Igor V.; Пивкина, Алла Н.

doi:10.1016/j.combustflame.2018.01.011

Cited by 14 publications

(6 citation statements)

References 54 publications

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“…affirms the enhanced reactivity of nano-titanium particles and supports the model of oxygen diffusion through the oxide layer . Compared to the findings from Muravyev et al, our results for the ignition behavior and TGA characterization of nano-titanium particles in an oxygen environment, shown in Figures and S5, correspond to particles whose ignition temperature (∼650 K), oxidation onset, and metal content (70 wt %) are more similar to what the Muravyev et al study finds for their porous titanium particles . As such, the oxidation mechanism and behavior of our titanium particles at relatively high and slow heating rates may align with what their study finds for the oxidation trends of the porous titanium particles.…”

Section: Resultssupporting

confidence: 89%

“…The oxidation kinetics study of nano-titanium particles conducted by Muravyev et al. affirms the enhanced reactivity of nano-titanium particles and supports the model of oxygen diffusion through the oxide layer . Compared to the findings from Muravyev et al, our results for the ignition behavior and TGA characterization of nano-titanium particles in an oxygen environment, shown in Figures and S5, correspond to particles whose ignition temperature (∼650 K), oxidation onset, and metal content (70 wt %) are more similar to what the Muravyev et al study finds for their porous titanium particles .…”

Section: Resultssupporting

confidence: 86%

“…31 Compared to the findings from Muravyev et al, our results for the ignition behavior and TGA characterization of nano-titanium particles in an oxygen environment, shown in Figures 8 and S5, correspond to particles whose ignition temperature (∼650 K), oxidation onset, and metal content (70 wt %) are more similar to what the Muravyev et al study finds for their porous titanium particles. 31 As such, the oxidation mechanism and behavior of our titanium particles at relatively high and slow heating rates may align with what their study finds for the oxidation trends of the porous titanium particles. Diffusion of oxygen to the titanium core may also be further facilitated by the added complexity of a reactive oxide shell for which TiN is oxidized by nascent oxygen.…”

Section: Table 1 T-jump Activation Energiessupporting

confidence: 76%

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Ignition of Nanoscale Titanium/Potassium Perchlorate Pyrotechnic Powder: Reaction Mechanism Study

et al. 2018

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The reaction mechanism and ignition characteristics of the pyrotechnic composite of titanium nanoparticles and micron-sized potassium perchlorate was investigated under rapid heating conditions (∼5 × 105 K/s) by temperature jump (T-Jump) time-of-flight mass spectrometry. X-ray photoelectron spectroscopy surface analysis and transmission electron microscopy (TEM) characterization of titanium nanoparticles show a reactive oxide layer (∼6 nm) composed of amorphous TiO2 and roughly 20% crystalline TiN and titanium oxynitride. The T-Jump and thermogravimetric analysis reveals the oxide layer to be responsible for catalysis of oxygen release from KClO4, resulting in ignition temperatures as low as 720 K in atmospheric pressure argon. Fast and slow in situ heating TEM corroborate the findings of oxygen atmosphere ignition characteristics, which illustrate KClO4 melting and coating of titanium nanoparticles immediately before oxidizer decomposition and titanium oxidation. Unlike aluminum, which has been shown to have a rapid loss of surface area before combustion as a result of sintering, Ti retained its high surface area. A combination of a reactive shell and the preservation of titanium nanostructure under rapid heating may lead to enhanced oxygen diffusion and increased potential for transient energy release.

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Section: Resultssupporting

confidence: 89%

Section: Resultssupporting

confidence: 86%

Section: Table 1 T-jump Activation Energiessupporting

confidence: 76%

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Ignition of Nanoscale Titanium/Potassium Perchlorate Pyrotechnic Powder: Reaction Mechanism Study

et al. 2018

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“…The structure, combustion and application of energetic systems based on fine, submicron and nanosized metals (in addition to changes in the names of these materials with time) were investigated extensively by the author's group [38,[152][153][154][155][156][157], as well as by other teams of researchers [158][159][160][161][162][163][164]. The most prominent result observed was the decrease in the ignition time and increase in the burning rate for compositions containing nano-Al [38,155,156].…”

Section: Energetic Inks For Rms: Composition and Componentsmentioning

confidence: 99%

Progress in Additive Manufacturing of Energetic Materials: Creating the Reactive Microstructures with High Potential of Applications

Muravyev

Моногаров

Schaller

et al. 2019

Propellants Explo Pyrotec

Self Cite

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The modern “energetic‐on‐a‐chip” trend envisages reducing size and cost while increasing safety and maintaining the performance of energetic articles. However, the fabrication of reactive structures at micro‐ and nanoscales remains a challenge due to the spatial limitations of traditional tools and technologies. These mature techniques, such as melt casting or slurry curing, represent the formative approach to design as distinct from the emerging additive manufacturing (3D printing). The present review discusses various methods of additive manufacturing based on their governing principles, robustness, sample throughput, feasible compositions and available geometries. For chemical composition, nanothermites are among the most promising systems due to their high ignition fidelity and energetic performance. Applications of reactive microstructures are highlighted, including initiators, thrusters, gun propellants, caseless ammunition, joining and biocidal agents. A better understanding of the combustion and detonation phenomena at the micro‐ and nanoscale along with the advancement of deposition technologies will bring further developments in this field, particularly for the design of micro/nanoelectromechanical systems (MEMS/NEMS) and propellant grains with improved performance.

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“…The non-isothermal oxidation behavior of titanium alloy powders in micron- and nano-scales has been studied for the application in the fields of explosives and propellants [13,14], while the non-isothermal oxidation behavior of bulk titanium alloys is seldom studied. G.B.…”

Section: Introductionmentioning

confidence: 99%

Non-Isothermal Oxidation Behavior and Mechanism of a High Temperature Near-α Titanium Alloy

Ouyang

et al. 2018

Materials

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Non-isothermal oxidation is one of the important issues related to the safe application of high-temperature titanium alloys, so this study focuses on the non-isothermal oxidation behavior and mechanism of near-α titanium alloys. The thermogravimetry-differential scanning calorimetry (TGA/DSC) method was used to study the non-isothermal oxidation behavior of TA29 titanium alloy heated from room temperature to 1450 °C at a heating rate of 40 °C/min under pure oxygen atmosphere. The results show that non-isothermal oxidation behavior can be divided into five stages, including no oxidation, slow oxidation, accelerated oxidation, severe oxidation and deceleration oxidation; for the three-layer TiO2 scale, Zr, Nb, Ta are enriched in the intermediate layer, while Al is rich in the inner layer and Sn is segregated at the oxide-substrate interface, which is related to their diffusion rates in the subsurface α case. The oxidation mechanism for each stage is: oxygen barrier effect of a thin compact oxide film; oxygen dissolution; lattice transformation accelerating the dissolution and diffusion of oxygen; oxide formation; oxygen barrier effect of recrystallization and sintering microstructure in outer oxide scale. The alloying elements with high valence state and high diffusion rate in α-Ti are favorable to slow down the oxidation rate at the stage governed by oxide formation.

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Exploring enhanced reactivity of nanosized titanium toward oxidation

Cited by 14 publications

References 54 publications

Ignition of Nanoscale Titanium/Potassium Perchlorate Pyrotechnic Powder: Reaction Mechanism Study

Ignition of Nanoscale Titanium/Potassium Perchlorate Pyrotechnic Powder: Reaction Mechanism Study

Progress in Additive Manufacturing of Energetic Materials: Creating the Reactive Microstructures with High Potential of Applications

Non-Isothermal Oxidation Behavior and Mechanism of a High Temperature Near-α Titanium Alloy

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