Mechanochemical activation of aluminum: 1. Joint grinding of aluminum and graphite

Стрелецкий, А. Н.; Колбанев, И. В.; Борунова, А. Б.; Леонов, А. В.; Butyagin, P. Yu.

doi:10.1007/s10595-005-0068-6

Cited by 23 publications

(29 citation statements)

References 7 publications

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“…Formation of new, not oxidized and defective surfaces of metal in nanocomposite materials leads to high reactivity of mechanochemically synthesized composites with different reagents. A special technique 483 was designed to prevent self-ignition of nanocomposite Al-C during its first contact with air. It was shown that Al in the composite Al-C interacts with oxygen at significantly lower temperature than in case of the usual sample.…”

Section: Metal-ceramic Nanocompositesmentioning

confidence: 99%

Hallmarks of mechanochemistry: from nanoparticles to technology

et al. 2013

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The aim of this review article on recent developments of mechanochemistry (nowadays established as a part of chemistry) is to provide a comprehensive overview of advances achieved in the field of atomistic processes, phase transformations, simple and multicomponent nanosystems and peculiarities of mechanochemical reactions. Industrial aspects with successful penetration into fields like materials engineering, heterogeneous catalysis and extractive metallurgy are also reviewed. The hallmarks of mechanochemistry include influencing reactivity of solids by the presence of solid-state defects, interphases and relaxation phenomena, enabling processes to take place under non-equilibrium conditions, creating a well-crystallized core of nanoparticles with disordered near-surface shell regions and performing simple dry time-convenient one-step syntheses. Underlying these hallmarks are technological consequences like preparing new nanomaterials with the desired properties or producing these materials in a reproducible way with high yield and under simple and easy operating conditions. The last but not least hallmark is enabling work under environmentally friendly and essentially waste-free conditions (822 references).

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Section: Metal-ceramic Nanocompositesmentioning

confidence: 99%

Hallmarks of mechanochemistry: from nanoparticles to technology

et al. 2013

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“…Butyagin); standard PP-1 aluminum (State Standard 5592-71) with an average linear particle diameter of 97 μm and MPG-type graphite with a specific surface of 2 m 2 /g were used as the precursors. Details of the mechanical activation of aluminum and results of investigation of the structure of the powder are presented in [7,8].…”

Section: Methodsmentioning

confidence: 99%

Nanosized components of energetic systems: Structure, thermal behavior, and combustion

Пивкина

Frolov

Иванов

2007

Combust Explos Shock Waves

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Ultrafine and nanosized powders of oxidizers and metals are considered as promising ingredients for the development of new highly effective solid rocket propellants. An ultrafine ammonium perchlorate (AP) powder and nanosized aluminum were produced by mechanical activation and investigated using electron and atomic force microscopy and X-ray powder and thermal analyses. It is shown that the activation energy of nanoaluminum oxidation is considerably lower than that for the micron-size powder, and the activation energy of the high-temperature decomposition for standard AP exceeds that for ultrafine AP. The exponent in the burning rate law decreases, and the burning rate increases by an order of magnitude if micron-sized aluminum is completely replaced by nanoaluminum in stoichiometric compositions containing ultrafine AP.

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“…It was shown in previous communications [1,2] that, in the processes of mechanical treatment of aluminum in mixtures with graphite, the particles of Al/C composite containing chemically active aluminum are formed. Based on the measurement results for the specific surface area of Al-C mixtures and the analysis of the shapes of X-ray diffraction spectrum lines, it was assumed [2] that the particles of Al/C composite are built from nanocrystalline blocks of aluminum and amorphous carbon.…”

Section: Introductionmentioning

confidence: 99%

Mechanical activation of aluminum: 2. Size, shape, and structure of particles

et al. 2004

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The structure of active Al/C composite prepared by the mechanochemical method from aluminum and graphite powders (10-30 wt % C) is studied by scanning and transmission electron microscopies, atomic force microscopy, local elemental analysis, X-ray diffraction, as well as by adsorption and sedimentation measurements. It is established that the particles of chemically active Al/C composite represent porous plate-like aggregates with a mean size smaller than 2.5-5 µ m and composed of nanocrystalline aluminum blocks with a size of 15-60 nm distributed in a loose amorphous carbon. Single aluminum particles with a size of up to 10 nm are also observed; however, their weight fraction is small.

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Mechanochemical activation of aluminum: 1. Joint grinding of aluminum and graphite

Cited by 23 publications

References 7 publications

Hallmarks of mechanochemistry: from nanoparticles to technology

Hallmarks of mechanochemistry: from nanoparticles to technology

Nanosized components of energetic systems: Structure, thermal behavior, and combustion

Mechanical activation of aluminum: 2. Size, shape, and structure of particles

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