Results 251 to 260 of about 57,883 (290)
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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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Slurry density effects on ball milling in a laboratory ball mill
Powder Technology, 1989Abstract The effect of slurry density on the dynamics and grinding behavior of a batch ball mill was studied using quartz as a test material. It was found that slurry density determined the distribution of solid charge in the mill, with migration of particles from the tumbling zone to the mill periphery as solid concentration was progressively ...
C. Tangsathitkulchai, L.G. Austin
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Journal of Physics: Condensed Matter, 1997
Phases in ball milled for different lengths of time have been investigated by means of x-ray diffraction, Mossbauer spectroscopy and Raman scattering spectroscopy. It was found that the high-temperature phase can be formed by ball milling at room temperature. In the milling procedure the compounds FeSi and were also formed.
Li Tie, Li Yu-zhi, Zhang Yu-heng
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Phases in ball milled for different lengths of time have been investigated by means of x-ray diffraction, Mossbauer spectroscopy and Raman scattering spectroscopy. It was found that the high-temperature phase can be formed by ball milling at room temperature. In the milling procedure the compounds FeSi and were also formed.
Li Tie, Li Yu-zhi, Zhang Yu-heng
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Applied Spectroscopy, 1957
After reading a publication by B. Claus, we have tried to apply an analogous principle as used in this device to an existing type of vibrating ball mill (Vibratom).
Th. A. Veerkamp, B. J. Rietveld
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After reading a publication by B. Claus, we have tried to apply an analogous principle as used in this device to an existing type of vibrating ball mill (Vibratom).
Th. A. Veerkamp, B. J. Rietveld
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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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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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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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Catalytic reactions in ball mills
2021Over the past two decades mechanochemistry has emerged as an important tool in catalysis research. It has not only shown promise for catalyst synthesis, resulting in properties that are often unattainable by conventional methods, but is also a very effective tool for performing catalytic reactions with exceptional selectivities.
Amol P. Amrute, Ferdi Schüth
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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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Physicochemical properties of ball milled boron particles: Dry vs. wet ball milling process
Powder Technology, 2015Abstract Physicochemical properties of both dry and wet milled boron particles with sub-micron sizes were investigated. Milling process was performed in N2 atmosphere and the mass ratio of tungsten carbide ball and boron was fixed at 20:1. It was found that the size distribution of boron particles grinded under dry milling condition was much broader ...
Hye Jin Jung +4 more
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