Results 251 to 260 of about 18,996,701 (296)

High-Energy Ball Milling of Some Intermetallics

Hyperfine Interactions, 2001
High-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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Structural transformations of alumina by high energy ball milling

Journal of Materials Research, 1993
Room temperature, high energy ball milling was applied to various transition aluminas (γ, K, χ), producing thermodynamically stable α-alumina–a phenomenon that could otherwise be achieved only by high temperature (1100–1200 °C) heat treatment. The transformation proceeds in two steps.
P.A. ZielińAski, R. Schulz, S. Kaliaguine, A. Van Neste   +3 more
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Decomposition of intermetallics during high-energy ball-milling

Materials Science and Engineering: A, 2007
The decomposition behavior of FeSn, CoSn and CoIn2 intermetallics under high-energy ball-milling has been investigated using X-ray diffraction, calorimetric and magnetization measurements. Upon milling a large amount of the FeSn intermetallic decomposes into Fe5Sn3 and FeSn2, where the average grain size of the product phases stays nearly constant with
Y.S. Kwon, P.P. Choi, J.S. Kim, D.H. Kwon, K.B. Gerasimov   +4 more
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High-Capacity High-Energy Ball Mill for Nanophase Materials

1994
A high-energy high-capacity ball mill, which can be easily scaled-up, for the synthesis of nanophase materials is described. The synthesis of nanophase iron carbides is shown to be feasible with the new mill for batch charges of up to 120 g in 10 h. Kinetic effects are presented.
Diego Basset, Paolo Matteazzi, Fabio Miani   +2 more
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Iron nanoparticles produced by high-energy ball milling

Journal of Nanoparticle Research, 2007
In 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, Janeth Cervantes, Rodrigo Esparza, Gerardo Rosas   +3 more
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Amorphization of selenium induced by high-energy ball milling

Physical Review B, 1997
Structural changes occurring in the crystalline element selenium upon high-energy ball milling has been studied. Milling experiments have been performed at the ambient temperature and at a cryogenic temperature of -100 degrees C, respectively. The final milling products under both conditions were found to be a fully amorphous phase after several hours ...
G. J. Fan, F. Q. Guo, Z. Q. Hu, M. X. Quan, K. Lu   +4 more
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Response of Lanthanide Sesquioxides to High‐Energy Ball Milling

Advanced Engineering Materials
Sesquioxides (M2O3) exhibit rich polymorphism with distinct phases that form over broad compositional, pressure, and temperature ranges. This makes these materials an ideal model system for studying the effects of high‐energy ball milling and the far‐from‐equilibrium conditions induced by complex mechanical interactions.
Eric C. O’Quinn, Alexandre P. Solomon, Casey Corbridge, Cale Overstreet, Cameron Tracy, Antonio F. Fuentes, David J. Sprouster, Maik K. Lang   +7 more
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Decomposition and Crystallization Induced by High-Energy Ball-Milling

Solid State Phenomena, 2007
Phase transformation induced by ball-milling was studied in this work. It was found that amorphous Fe90Zr10 ribbons undergo crystallization into BCC α-Fe(Zr) under milling in an AGO-2 mill. The decomposition degree of the amorphous phase increased with increasing milling time and intensity.
Young Soon Kwon, Ji Soon Kim, Cheol Eeh Kim   +2 more
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Synthesis of Nano-WC by High-Energy Ball Milling

Materials Science Forum, 2013
Nanosized tungsten carbide (nanoWC) has been widely studied and applied in many industries as hard materials since it has good combination of high hardness and strength. Thermal mechanical alloying method consisting of high-energy ball milling and subsequent carbonization is a common synthetic approach to prepare nanoWC.
Le Yang Dai, Shao Fen Lin, Jing Feng Chen, Wen Chun Wang   +3 more
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Characterization of High-Energy Ball Milling of Ba Hexaferrite

Materials Science Forum, 2003
Ba-hexaferrites was synthesized by using high-energy ball milling process and particle size, densification and microstructure were characterized. BaFe 12 O 19 phase was prepared from barium carbonate and iron oxide using ball to powder ratio of 10:1 and 4:1, milled for 1 and 5 hours. Pellets were sintered from 1000 to 1300 °C.
P.I. Paulin Filho, R.R. Corrêa
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