Results 291 to 300 of about 19,047,843 (335)

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

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

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

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

Microstructural characterization of Mg-SiC nanocomposite synthesized by high energy ball milling

Advanced Powder Technology, 2018
High-energy ball milling is successfully used to produce magnesium matrix nanocomposites reinforced with SiC nanoparticles. Changes in morphology and microstructural features of the milled powders were characterized in order to highlight advantages of ...
S. Kamrani, D. Penther, A. Ghasemi, R. Riedel, C. Fleck   +4 more
semanticscholar   +1 more source

High energy ball milling of a Al65Cu20Fe15 quasicrystalline alloy

Journal of Non-Crystalline Solids, 2004
The phase transformations of the quasicrystals and related crystalline phases present in an Al65Cu20Fe15 alloy were studied by high energy ball milling. The milling was carried out in an attritor mill at speeds of 200 and 400 rpm for 5, 10, 20 and 40 h with a ball to charge ratio of 20:1, using hexane as a process control agent.
N.K. Mukhopadhyay, Vinod Kurup, V.C. Srivastava, P.B. Joshi, R.K. Mandal   +4 more
openaire   +1 more source

Nickel Silicides Synthesized by High Energy Ball Milling

Key Engineering Materials, 2007
The high energy ball milling of Ni-50 atom % Si elemental powder mixtures was carried out using a planetary mill. X-ray diffraction (XRD) was used to identify the phase evolutions during the high energy ball milling period. The microstructure morphology of the powders milled different time was determined by field emission scanning electron microscope ...
Gen Shun Ji, Qin Ma, Tie Ming Guo, Qi Zhou, Jian Gang Jia, Xin Guo, Xue Ding Chen   +6 more
openaire   +1 more source

Modification of biochar with high-energy ball milling: development of porosity and surface acid functional groups

, 2021
F. J. López-Tenllado, I. L. Motta, J. Hill   +2 more
semanticscholar   +1 more source