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Mechanical Milling Assisted by Electrical Discharge - Recent Developments p.111 Nanocrystalline Bimetallic Oxides from Molecular Precursors

  • Rapid synthesis of Bi and Sb sulfides using electric
    Rapid synthesis of Bi and Sb sulfides using electric

    May 08, 2008 Electric discharge assisted ball milling was performed in a modified vibrational laboratory rod mill. The mill was designed to produce a milling mode that combines repeated impact of a hardened curved rod end on powder particles, placed on a vibrating hemispherical container under electrical conditions of pulsed arc discharges ( Fig. 1 )

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  • High di-electric constant nano-structure ceramics
    High di-electric constant nano-structure ceramics

    electric discharge assisted mechanical milling and magneto ball milling and its properties Azrin A. Chowdhury University of Wollongong, [email protected] Andrzej Calka University of Wollongong, [email protected] David Wexler University of Wollongong, [email protected] Konstantin Konstantinov University of Wollongong, [email protected]

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  • Direct synthesis of AlN nano powder by dielectric barrier
    Direct synthesis of AlN nano powder by dielectric barrier

    May 06, 2016 In this paper, a method of direct synthesis of aluminum nitride nano powder by dielectric barrier discharge assisted mechanical ball milling is presented. The mixtures of Al and LiOH H2O powders, as samples, treated by dielectric barrier discharge assisted mechanical ball milling are characterized by X-ray diffraction and scanning electron microscope. It is shown that AlN nano

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  • Mechanical milling assisted by electrical discharge
    Mechanical milling assisted by electrical discharge

    Mechanical milling is an effective technique for the preparation of fine metallic and ceramic powders and can also be used to drive a wide range of chemical reactions. Milling devices include planetary machines, attritors and vibrational mills; products include amorphous, nanocrystalline and quasicrystalline materials, supersaturated solid solutions, reduced minerals, high-surface-area

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  • Comparative research of plasma-assisted milling and
    Comparative research of plasma-assisted milling and

    Jun 26, 2019 the electric discharge-assisted milling, electric discharge is introduced into the ball milling process, which may lead to some new chemical reaction routes and fast reaction rates [9, 10]. During the electric discharge-assisted milling process, fast fracturing, recrystallization, and mineral reduction will take place [11]

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  • Behavior of Fe powder during high-energy ball milling
    Behavior of Fe powder during high-energy ball milling

    Jan 05, 2013 In this study, nanostructured Fe powders were synthesized following 10 hours of high-energy ball milling with a superimposed dielectric barrier discharge plasma (DBDP). The mean size of the milled powder was approximately 100 nm with an average grain size of 16.2 nm. The influence of DBDP on the underlying grain refinement mechanisms during ball milling was investigated by

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  • Stable anode performance of an Sb–carbon nanocomposite
    Stable anode performance of an Sb–carbon nanocomposite

    The composites obtained using ball milling modes A and B generally show deteriorating cyclic behaviour (Fig. 3a and b). The composite prepared by the ball milling mode A shows the highest capacities (both discharge and charge ones) in the 4 th cycle, with the highest value of the discharge capacity being 571 mA h g −1. The corresponding

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  • Effect of Pre-reaction Ball Milling on Kinetics of
    Effect of Pre-reaction Ball Milling on Kinetics of

    Apr 30, 2018 It was found that during ball milling, crystallization occurs in the amorphous ribbon sample with precipitation of an {alpha}-Fe solid solution, and the amorphous sample crystallizes completely into a single {alpha}-Fe nanostructure (rather than {alpha}-Fe and borides as in the usual thermal crystallization products) when the milling time

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  • Dielectric barrier discharge plasma assisted ball
    Dielectric barrier discharge plasma assisted ball

    A recent developed milling method named as dielectric barrier discharge plasma assisted ball milling (DBDP-milling) was introduced. ... Calka 等 [11~13] 将 ... spark discharge mode (b) glow

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  • A. Calka
    A. Calka

    Rapid synthesis of TiC–Fe3C composite by electric discharge assisted mechanical milling of ilmenite (FeTiO3) with graphite. more. by A. Calka. ABSTRACT Carbo-thermic reduction of ilmenite (FeTiO3) to TiO2 and/or TiC is traditionally carried out by a high temperature annealing treatment at ∼1500 C. In this work, electric discharge assisted

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  • Formation of Amorphous and Nanostructural
    Formation of Amorphous and Nanostructural

    In contrast to conventional milling, spark discharge milling was found to induce the formation of predominantly sub-micron single particles of amorphous powder. The morphology of individual particles varied from sub-micron irregular shaped particles to remelted particles, depending on selection of vibrational amplitude during discharge

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  • Direct synthesis of AlN nano powder by dielectric
    Direct synthesis of AlN nano powder by dielectric

    May 06, 2016 Several discharge modes are usually utilized in the milling process, such as spark discharge, glow discharge, and dielectric barrier discharge (DBD). DBD, one of electrodes covered by a dielectric, is a common used method to excite non-thermal plasma, which exhibits unique advantages of high electron energy, high electron density, and high concentration of active species (N, O 3 , N 2 (C)

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  • Stable anode performance of an Sb–carbon
    Stable anode performance of an Sb–carbon

    The composites obtained using ball milling modes A and B generally show deteriorating cyclic behaviour (Fig. 3a and b). The composite prepared by the ball milling mode A shows the highest capacities (both discharge and charge ones) in the 4 th cycle, with the highest value of the discharge capacity being 571 mA h g −1. The corresponding electrode loses 27% of the highest discharge capacity (and shows

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