Results 251 to 260 of about 59,465 (303)
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Raman spectroscopy of ball-milled TiO2
Journal of Molecular Structure, 2001The Raman spectroscopy is method to analyze different crystal structure of TiO2. We applied it in order to study structural changes during high-energy ball milling of TiO2 powder. TiO2 anatase (tetragonal structure, space group I4/amd = D4h19) was milled up to 10 hours using two different sets of vials and balls.
Furić, Krešimir +3 more
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Studies on Scale-Up of Ball Mills
Mining, Metallurgy & Exploration, 1984The impetus for the work described in this paper was provided by difficulties being reported by some operators in obtaining design throughputs in large diameter ball mills. In some cases, it seems that the usual methods of ball mill scale-up based on the Bond work index seriously overestimate the throughput of large diameter ball mills; in other cases,
Whiten, W. J., Kavetsky, A.
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Multifractal properties of ball milling dynamics
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2014This work focuses on the dynamics of a ball inside the reactor of a ball mill. We show that the distribution of collisions at the reactor walls exhibits multifractal properties in a wide region of the parameter space defining the geometrical characteristics of the reactor and the collision elasticity.
M. A. Budroni +3 more
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Dry ball milling and wet ball milling for fabricating copper–yttria composites
Rare Metals, 2018Abstract Yttria‐reinforced copper matrix composites were prepared by dry ball milling (DBM) and wet ball milling (WBM), respectively, followed by spark plasma sintering (SPS). It is to determine which milling process is better for fabricating Cu–Y 2 O 3
Fei Huang +3 more
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Mechanochemical decomposition of pentachlorophenol by ball milling
Journal of Environmental Sciences, 2009The mechanochemical dechlorination of pentachlorophenol (PCP) was studied using CaO and SiO2 powder as additives. The effects of the milling time and additives on the dechlorination rate were investigated. The resulting product was characterized by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), thermogravimetric analysis (TG) and ...
Yinglei, Wei +3 more
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Microstructure investigations of ball milled materials
Microscopy Research and Technique, 1998HREM and FEG TEM were emphasized and extensively used to follow the most subtle changes in the structure and composition of ball-milled Cu, Fe-Cu, and thermally decomposed Fe60Cu40. Some significant results are obtained and summarized as follows: HREM shows that the deformation of ball-milled copper proceeds mainly by twinning and shear bands (SBs ...
J Y, Huang, Y K, Wu, H Q, Ye
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Process engineering with planetary ball mills
Chemical Society Reviews, 2013Planetary ball mills are well known and used for particle size reduction on laboratory and pilot scales for decades while during the last few years the application of planetary ball mills has extended to mechanochemical approaches. Processes inside planetary ball mills are complex and strongly depend on the processed material and synthesis and, thus ...
Christine Friederike, Burmeister +1 more
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Predictive model for ball mill wear
Canadian Metallurgical Quarterly, 1997Abstract Ball mills, characteristic of the mineral processing industry, are used to reduce ore from one size distribution to another. Wear is associated with comminution mechanisms found in the ball charge which in turn affects grinding performance.
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Materials preparation by ball milling
Canadian Journal of Physics, 2000Ball milling is an important method for the preparation of materials both for the investigation of fundamental physical properties and for a number of possible commercial applications. In the present report, the basic principles of ball milling are discussed.
R A Dunlap +5 more
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Nanocrystallization of Fe80B20 By ball milling
Nanostructured Materials, 1995By means of X-ray diffraction (XRD), transmission electron microscopy (TEM), as well as differential scanning calorimetry (DSC) measurements, the sequence of structural evolution by ball milling of polycrystalline and amorphous Fe80B20 alloys was studied. Ball milling of polycrystalline Fe80B20 alloy results in a continuous refinement of the grain size
G.J. Fan, X.P. Song, M.X. Quan, Z.Q. Hu
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