Reactionary ability of aluminum ultrafine powders in various oxidation processes

Ilyin, Alexander P.; Gromov, Alexander A.; Reshetov, A. A.; Tihonov, D.V.; Yablunowsky, G.V.

doi:10.1109/korus.2000.866103

Cited by 8 publications

(2 citation statements)

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“…Another method for continuous hydrogen generation from aluminum is using aluminum powder with adequately small particles. This implies higher specific surface area of the powder and, consequently, more activity of the aluminum powder [44,45]. As explained in the previous section, ordinary ball milling is unable to reduce the size of aluminum particles down to nano size because aluminum is a ductile metal.…”

Section: Production Of Hydrogen Using Metal Nanoparticlesmentioning

confidence: 99%

Nanostructural Deformation in Brittle-Ductile Compounds and Its Application in Fabricating Ductile Nanoparticles

Alinejad¹,

Zare²

2018

Abrasive Technology - Characteristics and Applications

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The ball-milling process involves both fracturing and welding of particles. Particles of ductile materials are very likely to attach to each other when entrapped between balls.Therefore, conventional milling methods fail to grind ductile materials into nanoparticles. However, using brittle particles together with the starting materials, one can fracture and highly activate ductile particles through planetary ball milling. During the milling process, brittle particles are easily fractured down, and their sharp edges chop the particles of the ductile materials incessantly into pieces until both ductile and brittle particles are nano-sized (a process which is unlikely, if not impossible, to accomplish by ball milling of ductile materials alone). In this chapter, the effects of ball milling of ductile materials (e.g., graphite, aluminum, and zinc) together with a brittle material (here, NaCl), for preparation of metal nanoparticles or metal oxide nanoparticles are investigated. A theoretical explanation of the mechanism is also presented based on the facts and practical measurements.

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Section: Production Of Hydrogen Using Metal Nanoparticlesmentioning

confidence: 99%

Nanostructural Deformation in Brittle-Ductile Compounds and Its Application in Fabricating Ductile Nanoparticles

Alinejad¹,

Zare²

2018

Abrasive Technology - Characteristics and Applications

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“…Among the methods of metallization of dielectric substrates, the following are now commonly used: electrochemical metallization, which includes the stages of electroless deposition and electroplating, a group of vacuum * Author to whom any correspondence should be addressed. deposition methods, as well as the method of burning conductive pastes [3,4]. However, these methods consist of complex, multi-stage processes and consume a large amount of time and material resources.…”

Section: Introductionmentioning

confidence: 99%

Direct nanosecond laser metallization of AlN ceramics

Sviridova,

Shchekin,

Petrovskiy

et al. 2024

Laser Phys. Lett.

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In this paper, a study of the influence of laser processing parameters with pulsed nanosecond laser radiation on the degree of metallization and the quality of the metallized surface of aluminum nitride ceramics is presented. Experiments were carried out to create conductive structures with the lowest resistance using direct laser metallization. The dependences of resistance on duration, pulse overlap, and laser fluence were obtained and analyzed, and changes in surface roughness were considered. In addition, the composition of the surface of laser-metallized ceramics was studied using energy-dispersive x-ray spectroscopy. As a result, it was shown that the resistance is inversely proportional to the square root of the pulse duration, the thermal diffusion length was estimated as lT = 8.2 μm for 200 ns and lT = 1.2 μm for 4 ns, and the presence of optimal values of pulse overlap Oy (scanning direction) equal to 50% and pulse overlap Ox (step direction) equal to 96% and 99.7% for pulse durations of 200 and 4 ns, respectively, was determined. The choice of optimal pulse overlaps with the highest laser fluence allowed us to obtain the minimum resistance value with maximum performance.

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Characterization of Aluminum Powders: II. Aluminum Nanopowders Passivated by Non‐Inert Coatings

Gromov

Ilyin

Förter‐Barth

et al. 2006

Propellants Explo Pyrotec

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Results of DTA‐TG investigation and chemical analysis of electro‐exploded aluminum nanopowders, passivated and/or coated with the non‐inert reagents: nitrocellulose (NC), oleic acid (C17H33COOH) and stearic acid (C17H35COOH), which were suspended in kerosene and ethanol, amorphous boron, nickel, fluoropolymer, ethanol and air (for comparison), are discussed. Surface protection of aluminum nanopowders by coatings of different origin results in significant advantages in the energetic properties of the powders. Aluminum nanopowders with a protecting surface show increased stability to oxidation in nitrogen, air and in water during storage period. On the basis of the experimental results, a diagram of the formation and stabilization of the coatings is proposed. The kinetics of the interaction of aluminum nanopowders with nitrogen, air and water is discussed. Recommendations concerning the efficiency of non‐inert reagent passivation are proposed on the basis of comprehensive analysis of the experimental data.

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Reactionary ability of aluminum ultrafine powders in various oxidation processes

Cited by 8 publications

References 1 publication

Nanostructural Deformation in Brittle-Ductile Compounds and Its Application in Fabricating Ductile Nanoparticles

Nanostructural Deformation in Brittle-Ductile Compounds and Its Application in Fabricating Ductile Nanoparticles

Direct nanosecond laser metallization of AlN ceramics

Characterization of Aluminum Powders: II. Aluminum Nanopowders Passivated by Non‐Inert Coatings

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