Results 261 to 270 of about 19,472 (303)

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
openaire   +1 more source

Synthesis of Nd0.7Sr0.3MnO3 ceramics by high-energy ball milling

Journal of Alloys and Compounds, 2008
Abstract Strontium doped perovskite-type manganite Nd0.7Sr0.3MnO3 is synthesized by high-energy ball milling. Nd0.7Sr0.3MnO3 single phase with perovskite structure is formed completely after milling 4 h and the perovskite phase decreases gradually and changes into amorphous state with increasing ball milling time up to 12 h.
S.S. Chen, C.P. Yang, Z.H. Zhou, D.H. Guo, H. Wang, G.H. Rao   +5 more
openaire   +1 more source

High Energy Planetary Ball Milling of SiC Powders

Key Engineering Materials, 2007
The effects of high-energy ball milling on SiC powders were studied using a planetary apparatus. Conditions to obtain nanostructured SiC powders with an average crystallite size of 4 nm were determined and powders were characterized by XRD, SEM and TEM analyses. This process was applied to prepare fine powders leading to dense SiC ceramics by sintering
Yu Bai Pan, Zheng Ren Huang, Dong Liang Jiang, Léo Mazerolles, D. Michel, J.L. Pastol, Guillaume Wang   +6 more
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

DEM Modeling and Optimization of the High Energy Ball Milling

DESIGN, CONSTRUCTION, MAINTENANCE, 2022
The Discrete Element Method (DEM) is a numerical method for simulating the dynamics of particles processes. This present work focuses on DEM simulations of a scale laboratory planetary ball mill through DEM Altair 2021.2 software to optimize and modulate the milling parameters. The simulation results show a good agreement with the experiments.
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

High-energy ball milling of Al2O3–TiO2 powders

Journal of Alloys and Compounds, 2007
High-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, G. Bertrand, C. Coddet, E. Gaffet, H. Hahn, H. Sieger   +5 more
openaire   +1 more source

Nanostructured Fe obtained by high-energy ball milling

Journal of Magnetism and Magnetic Materials, 2006
Abstract 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, P. Gorria, J.A. Blanco   +2 more
openaire   +1 more source