Explosion behaviour of metallic nano powders

Krietsch, Arne; Scheid, Marc; Schmidt, Martin; Krause, Ulrich

doi:10.1016/j.jlp.2015.03.016

Cited by 38 publications

(11 citation statements)

References 4 publications

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“…Due to their large reactive specific surface area, fine metal powders can be susceptible to spontaneous ignition under exposure to air, and consequently they require special precautions regarding their storage and manipulations [26]. Particularly, iron nanoparticles with a characteristic size in the order of  100 nm are known to be already pyrophoric [27]. Thus, from the point of view of their applicability, long-term stability against oxidation under ambient conditions is an important desirable feature of metallic and alloy nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Structure and magnetism of Fe–Co alloy nanoparticles

Klencsár

Németh

Zoltán

et al. 2016

Journal of Alloys and Compounds

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We report the hydrothermal synthesis and structure of Fe x Co 1-x alloy nanoparticles with considerable stability against oxidation under ambient atmosphere. Powder X-ray diffractometry (XRD), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), inductively coupled plasma mass spectrometry (ICP-MS), 57 FeMössbauer spectroscopy and magnetization measurements are applied to characterize the composition, morphology, crystal structure, atomic order and magnetic properties of the nanoparticles. As-prepared samples are composed mainly of the bcc Fe x Co 1-x alloy phase.TEM images of heat-treated samples confirm the nanoparticle nature of the original alloys. A consistent analysis of the experimental results leads to x  53% and x  62% Fe atomic ratio respectively in two analogous alloy samples, and suggests that the atomic level structure of the nanoparticles corresponds to that of a fully disordered (A2-type) alloy phase. Exploration of the effect of cobalt on the 57 Fe hyperfine parameters of iron microenvironments suggests that in these alloys the electronic state of Fe atoms is perturbed equally and in an additive manner by atoms in their first two coordination spheres.

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Section: Introductionmentioning

confidence: 99%

Structure and magnetism of Fe–Co alloy nanoparticles

Klencsár

Németh

Zoltán

et al. 2016

Journal of Alloys and Compounds

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“…Micrometric particles of aluminum and magnesium (Beck et al, 1997) can exhibit very high K St values (up to 1100 bar.m/s for aluminum) and very low minimum ignition energies (below 1 mJ). Several authors (Boilard et al, 2013;Krietsch et al, 2014) have also reported spontaneous ignition with metallic nanoparticles.…”

Section: Anatomy Of Metal Dust Deflagrationsmentioning

confidence: 98%

Suppression of metal dust deflagrations

Taveau¹,

Vingerhoets

Snoeys

et al. 2015

Journal of Loss Prevention in the Process Industries

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“…The mass of material in the mill was 20 kg. Turkevich et al [46] investigated the ignition and explosion properties of clouds in air of a range of carbonaceous nm powders, including carbon black, graphene, and graphite Krietsch et al [47] presented the results from experiments with several un-oxidized metallic nm powders (aluminium, iron, zinc, titanium, copper) in a modified 20-l Siwek bomb.…”

Section: Generation Ignition and Explosion Of Nm-particle Dust Cloudsmentioning

confidence: 99%

Industrial Dust Explosions. A Brief Review

Eckhoff

2021

Applied Sciences

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This paper first addresses the question: what is a dust explosion? Afterwards, some specific issues are briefly reviewed: materials that can give dust explosions, factors influencing ignitability and explosibility of dust clouds, the combustion of dust clouds in air, ignition sources that can initiate dust explosions, primary and secondary dust explosions, dust flash fires, explosions of “hybrid mixtures”, and detonation of dust clouds. Subsequently, measures for dust explosion prevention and mitigation are reviewed. The next section presents the case history of an industrial dust explosion catastrophe in China in 2014. In the final section, a brief review is given of some current research issues that are related to the prevention and mitigation of dust explosions. There is a constant need for further research and development in all the areas elucidated in the paper.

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Explosion behaviour of metallic nano powders

Cited by 38 publications

References 4 publications

Structure and magnetism of Fe–Co alloy nanoparticles

Structure and magnetism of Fe–Co alloy nanoparticles

Suppression of metal dust deflagrations

Industrial Dust Explosions. A Brief Review

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