Results 251 to 260 of about 24,206 (306)
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High-Energy Ball Milling of NiAl(Fe) System
Hyperfine Interactions, 2002High-energy ball milling was used to promote the solubilization of iron into NiAl powder for an iron concentration range of 10–30 wt.%. The microstructural evolution induced by the intense mechanical deformations, under different milling conditions, was followed by X-ray diffraction and Mossbauer spectroscopy.
PRINCIPI, GIOVANNI +3 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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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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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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Iron nanoparticles produced by high-energy ball milling
Journal of Nanoparticle Research, 2007In this investigation, the chemical and structural characteristics of Fe nanoparticles synthesized by high-energy ball milling have been explored. After the milling process the nanoparticles were collected using a magnetic field. The structure, morphology and composition of the powders were obtained using high-resolution electron microscopy.
Jorge E. Muñoz +3 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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High-Energy Ball Milling of Some Intermetallics
Hyperfine Interactions, 2001High-energy ball milling of metallic powders has been used in recent years for the synthesis of alloys through reactions mainly occurring in solid state. The diffusive phenomena accompanying and promoting the reactions of formation are related to the microstructure acquired by the powders as a consequence of the intense mechanical deformations.
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