Combustion Synthesis: Principles and Applications

Yeh, C.L.

doi:10.1016/b978-0-12-803581-8.03743-7

Cited by 12 publications

(8 citation statements)

References 23 publications

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“…14,15 Over the last two decades, combustion has become a very versatile route for the synthesis of intermetallic or oxide powders and compacts. [16][17][18][19][20][21] Combustion synthesis takes advantage of the heat evolved during the chemical reaction of precursor substances to obtain materials that would otherwise imply high-temperature processing techniques. 16 Therefore, highly exothermic reactions of high-adiabatic temperatures above 1800 K are needed.…”

Section: Introductionmentioning

confidence: 99%

The critical condition for thermal explosion in an isoperibolic system

2017

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Knowing the conditions for a system to undergo thermal explosion is of utmost importance for many applications. A critical condition that accounts for reactant consumption and covers most practical situations, including low activation energy reactions is presented. Our solution applies to cylindrical reactors of any radius to height ratio. In the case of films, it is shown that thermal explosion is virtually impossible. A new criterion to define the boundary of thermal run- away based on heat balance is introduced. This new definition of criticality allows us to check the accuracy of the non- stationary model to describe the critical condition. The nonstationary model is the base of most approache

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Section: Introductionmentioning

confidence: 99%

The critical condition for thermal explosion in an isoperibolic system

2017

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“…In the following, insights from the most commonly used chemical and biological synthesis methods are presented (bottom-up approach) [55]. Specifically, these include sol-gel [56], solvo-/hydrothermal [57], combustion [58], co-precipitation [59] and, also, so-called green synthesis [60]. This bottom-up approach is preferable mainly because the size and morphology of the nanoparticles can be more easily controlled [61], and it is, therefore, the main topic of this review.…”

Section: Synthesis Of Magnesium Oxide Nanoparticlesmentioning

confidence: 99%

Synthesis, Properties, and Selected Technical Applications of Magnesium Oxide Nanoparticles: A Review

Hornak

2021

IJMS

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In the last few decades, there has been a trend involving the use of nanoscale fillers in a variety of applications. Significant improvements have been achieved in the areas of their preparation and further applications (e.g., in industry, agriculture, and medicine). One of these promising materials is magnesium oxide (MgO), the unique properties of which make it a suitable candidate for use in a wide range of applications. Generally, MgO is a white, hygroscopic solid mineral, and its lattice consists of Mg2+ ions and O2− ions. Nanostructured MgO can be prepared through different chemical (bottom-up approach) or physical (top-down approach) routes. The required resultant properties (e.g., bandgap, crystallite size, and shape) can be achieved depending on the reaction conditions, basic starting materials, or their concentrations. In addition to its unique material properties, MgO is also potentially of interest due to its nontoxicity and environmental friendliness, which allow it to be widely used in medicine and biotechnological applications.

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“…The common metal oxides used in thermite reactions include Fe 2 O 3 , CuO, MoO 3 , WO 3 , Bi 2 O 3 , NiO, SiO 2 , etc. These materials have been the subject of intense research for various civilian and military applications that require large and rapid heating, including welding, alloying, material synthesis, gas generators, micro‐heaters, micro‐thrusters, micro‐detonators, micro‐initiators, igniters, and lead‐free gun primers . The reactivity and activation energy of a thermite ignition are highly important performance parameters.…”

Section: Introductionmentioning

confidence: 99%

Thermal characterization and kinetic analysis of nano‐ and micro‐Al/NiO thermites: Combined experimental and molecular dynamics simulation study

Fathollahi

Azizi‐Toupkanloo

2019

J Chinese Chemical Soc

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In the experimental part of this study, thermal properties of the Al and NiO composites in micro‐ and nano‐sized Al are investigated. Differential scanning calorimetry (DSC) analysis of the onset temperatures of ignition, activation energy (Ea), frequency factor (A), rate constant (k), critical ignition temperature of thermal explosion (Tb), and self‐accelerating decomposition temperature (TSADT), as well as the thermodynamic parameters (ΔS≠, ΔH≠, and ΔG≠) are used to explore the thermal behavior and analyze the kinetics. Thermal analysis suggests that the mechanism is based on solid–solid diffusion and liquid–gas for the nano‐ and micro‐Al/NiO composite, respectively. Our results indicate that the incorporation of nano‐Al particles can significantly reduce the ignition temperature, Ea, A, k, Tb, and TSADT. In the second part of this work, molecular dynamics (MD) simulation is used to investigate the behavior of Al/NiO thermite reaction using the Reaxff force field to evaluate the experimental results. Theoretically, MD results show 1,154 K as the reaction ignition temperature, which is in reasonably good agreement with experimental temperature of 893°C (1,166 K). The radial distribution function (RDF) shows that no reaction occurs at 500 K but it is complete at 1,200 K.

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Combustion Synthesis: Principles and Applications

Cited by 12 publications

References 23 publications

The critical condition for thermal explosion in an isoperibolic system

The critical condition for thermal explosion in an isoperibolic system

Synthesis, Properties, and Selected Technical Applications of Magnesium Oxide Nanoparticles: A Review

Thermal characterization and kinetic analysis of nano‐ and micro‐Al/NiO thermites: Combined experimental and molecular dynamics simulation study

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