Results 241 to 250 of about 18,996,701 (296)
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Dehydroxylation of high-energy ball-milled diasporic bauxite
Journal of Thermal Analysis and Calorimetry, 2018In this study, diasporic bauxite was mechanically activated for different durations (15, 30, 60, 90 and 120 min) by the planetary mono mill. The speed of the main disk and ball-to-mass ratio were kept constant at 600 rev min−1 and 25, respectively. The chemical composition of the ore was determined via X-ray fluorescence. Structural changes and thermal
Sakarya Üniversitesi/Mühendislik Fakültesi/Metalurji Ve Malzeme Mühendisliği Bölümü +5 more
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High-Energy Ball-Milling of Alloys and Compounds
Hyperfine Interactions, 2002After outlining some characteristics of high-energy ball-milling, we discuss selected examples of phase transformation and of alloy synthesis which focus on deviations from archetypal behaviours and throw light on the milling mechanisms. Some contributions of Mossbauer spectrometry to the characterization of ground materials are described.
G. Le Caër +3 more
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Hydrogenation of TiFe by high-energy ball milling
Journal of Alloys and Compounds, 2000The hydrogenation properties of TiFe, TiFe2 and pure Ti during high-energy ball milling in hydrogen atmosphere were studied. By ball milling, TiFe could absorb hydrogen without activation treatment. For Ti powder, a single phase TiH1.924 was formed.
C.-H Chiang, Z.-H Chin, T.-P Perng
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High energy ball milling of Co89B11 powders
Nanostructured Materials, 1999Abstract Mechanical alloying was performed on elemental cobalt and boron powders with atomic ratio Co 89 B 11 . X-ray diffraction analysis (XRD) and differential scanning calorimetry were used to characterize the structure of the milled samples before and after the heating. The high-energy ball milling was found to influence the resulting phases. The
M. Jachimowicz, V.I. Fadeeva, H. Matyja
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Synthesis of Cu–W Nanocomposite by High-Energy Ball Milling
Journal of Nanoscience and Nanotechnology, 2007The Cu-W bulk nanocomposites of different compositions were successfully synthesized by high-energy ball milling of elemental powders. The nanocrystalline nature of the Cu-W composite powder is confirmed by X-ray diffraction analysis, transmission electron microscopy, and atomic force microscopy.
T, Venugopal, K Prasad, Rao, B S, Murty
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DEM Modeling and Optimization of the High Energy Ball Milling
DESIGN, CONSTRUCTION, MAINTENANCE, 2022The Discrete Element Method (DEM) is a numerical method for simulating the dynamics of particles processes. This present work focuses on DEM simulations of a scale laboratory planetary ball mill through DEM Altair 2021.2 software to optimize and modulate the milling parameters. The simulation results show a good agreement with the experiments.
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Measuring the impact velocities of balls in high energy mills
Materials Science and Engineering: A, 1994A simple methodology for the experimental determination of impact velocities in ball mills used for the synthesis of nanophase materials is proposed. The impact velocity of the balls relative to the vial wall is determined from the indent size. A model correlating velocities with indent radius is described. Velocities were determined for the Spex mill (
BASSET D., MATTEAZZI P., MIANI, Fabio
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Platinum Alloy Catalysts by High Energy Ball-Milling
ECS Meeting Abstracts, 2010Abstract not Available.
Jason Ma +4 more
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High-energy ball milling of nonstoichiometric compounds
Uspekhi Fizicheskih Nauk, 2019Abstract The preparation of nanocrystalline powders of nonstoichiometric compounds such as carbides and oxides by high-energy milling is considered. The modern state of milling models for nonstoichiometric compounds is described. The influence of nonstoichiometry on the particle size of the produced nanopowders is discussed. The model
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Preparation of MgTiO3 ceramics by high energy ball milling
Journal of Wuhan University of Technology-Mater. Sci. Ed., 2006MgTiO3 precursor was mechanochemically synthesized by high-energy ball milling of MgO and TiO2. The sintering characteristic of the resulted MgTiO3 precursor was investigated. The experimental results indicate that particles of both MgO and TiO2 powders become smaller rapidly, and then the crystalline structures of MgO and TiO2 change significantly ...
Tao Zhendong +5 more
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