Results 261 to 270 of about 80,665 (303)
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High-energy ball milling of Al2O3–TiO2 powders
Journal of Alloys and Compounds, 2007High-energy ball milling of Al2O3–13 wt% TiO2 and Al2O3–44 wt% TiO2 powders have been studied and more precisely the effect of the addition of a milling agent and the relative speed of the vials. The evolution of the microstructure of the milled powders has been studied by X-ray diffraction and the evolution of the specific surface areas has been ...
S. Coste +5 more
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Nanostructured Fe obtained by high-energy ball milling
Journal of Magnetism and Magnetic Materials, 2006Abstract A detailed microstructural study of nanocrystalline Fe powder samples, obtained by mechanical attrition, was carried out by X-ray diffraction experiments as a function of the milling time. During the process, the exchange energy between the vessels, balls and Fe powders leads to a change of the Fe microstructure: in particular, a significant
D. Martínez-Blanco +2 more
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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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Properties of High-Energy Ball-Milled Fe–Se Based Superconductors
Journal of Nanoscience and Nanotechnology, 2012We have synthesized FeSe0.5Te0.5 superconductors by high-energy ball-milling and subsequent annealing. High-energy ball-milling of elemental powder mixtures resulted in the formation of metastable and/or nanocrystalline phases. Both XRD and DSC results show that the ball-milled powers were completely transformed to FeSe0.5Te0.5 with the grain size of a
Jung-Ho, Ahn, , Sangjun-Oh
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Preparation of Starch Nanoparticles via High-Energy Ball Milling
Journal of Nano Research, 2016Nano-sized starch particles were prepared from potato starch via high-energy ball milling, which is a purely physical method. Scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, differential scanning calorimetry, and viscometer were used to analyze the morphology and characteristics of the as ...
Hua Lin, Li Zhao Qin, He Hong, Qing Li
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Reduced graphene oxide synthesis by high energy ball milling
Materials Chemistry and Physics, 2015Abstract Graphene oxide is transformed to reduced graphene oxide by high energy ball milling in inert atmosphere. The process of ball milling introduces defects and removes oxygen functional groups, thereby creating the possibility of fine tuning the band gap of all intermediate stages of the structural evolution.
O. Mondal +5 more
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Bulk Nanocrystalline Cu Produced by High-Energy Ball Milling
Materials Science Forum, 2011The preparation, mechanical properties, grain size and thermal property of bulk nanocrystalline Cu (BNC-Cu) were investigated in this paper. BNC-Cu can be produced by in situ consolidation of pure Cu powder with high-energy ball milling at room temperature; the average grain sizes of Cu samples decreased with the increasing of ball milling time before ...
Cai Ju Li +4 more
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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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High-energy ball-milling-induced non-equilibrium phase transformations
Materials Science and Engineering: A, 1997Abstract α-Fe powder has been ball milled in an anhydrous atmosphere at two different temperatures (room temperature and 200 °C). The composition and structure of milled samples were investigated using X-ray diffraction, Mossbauer spectroscopy, combustion analysis, and thermal analysis.
Y. Chen, J.S. Williams
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Mathematical Modeling of High Energy Ball Milling (HEBM) Process
Defect and Diffusion Forum, 2014In the present study the modeling of the HEBM process is presented. The impact velocity, impact angle, rotation speed, mass of balls, ball-to-powder weight ratio and time of milling have been taken into account in order to calculate the energy transferred from the balls to the powder.
Maya Radune +5 more
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