Keywords: Ball milling, hydroxyapatite, titania, Nano-composite 1 Ahmed E. Hannora et al, MPM12, Suez University, 20 – 22 October. 2014 Introduction Nano-composites have received much attention due to their superior mechanical properties in comparison to their large-grained counterparts [1].

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Nano-Sb2O3 particles and brominated epoxy resin (BEO) powders were dispersed in poly (butylene terephthalate) (PBT) by high energy ball milling (HEBM). Then the nanocomposites were prepared by a tw...

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intermetallic phase prevails at the milling induced crystallization, observed after 40 hours milling. The ball milled amorphous powders (after 20 hours milling) could be compacted up to a density level of 95% only, applying compression at 870 MPa and 200 o C for 2 min.

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Fe 90 Zr 10 was chosen as a model system to elucidate the roles of mechanical deformation and local heating in the phenomenon of ball-milling-induced crystallization of amorphous alloys. The structural evolution of melt-spun amorphous Fe 90 Zr 10 ribbons under different milling conditions and high-pressure torsion was investigated by means of x-ray diffraction, Möss …

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Planetary ball-milling helps protect our planet from plastics pollution. Published by Ajisebutu Doyinsola. Researchers from Osaka University have developed eco-friendly polymer materials with extended functional lifespans that are self-healing, tough and recyclable, by innovatively using a planetary ball mixing method.

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According to the milling characteristics of ball-end milling cutter, Shi et al. established the milling force model of ball-end milling cutter. Tan [ 26 ] used the idea of axial microsegmentation to divide discrete cutting edges and used geometric analysis to judge the cutting in and cutting out conditions and established a cutting microelement ...

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Reaction of PdCl 2 with Diphenylacetylene Revisited: Effect of Solvents and Ball Milling on Cyclization and Crystal Structures of Dimeric Cyclobutenylpalladium Chloride Complexes Dr. Rajnish Kumar, Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 India ...

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The effect of ball‐milling as a premixing technique prior to melt‐mixing, on the crystallization and the nanomechanical properties of the composites has been studied. Two sets of SCB‐PE/GNPs nanocomposites with various filler loadings were prepared; one with and one without the ball‐milling step.

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Abstract The influence of high energy ball milling process, HEBM, and the presence of TiO 2 nanoparticles on the non-isothermal crystallization and fusion behavior of the HDPE were investigated. HEBM was used to homogeneously disperse TiO 2 nanoparticles into a high density polyethylene, HDPE. Differential scanning calorimetry was used to analyze their non-isothermal crystallization and fusion ...

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Crystal defects and phase transitions of nanocrystalline yttria-stabilised zirconia induced by high-energy ball milling Ceramics International ( IF 4.527) Pub Date :, DOI: 10.1016/j.ceramint.2020.11.044

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Ball milling of melt-spun Fe 90 Zr 10 ribbons in a planetary ball mill (AGO-2) induces their crystallization into supersaturated α-Fe(Zr) grains. The crystallization degree of the amorphous phase increases with increasing milling time, with a fully crystalline state being obtained after 30 min at a milling speed of 1000 rpm.

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17 powders have been obtained by means of high-energy ball milling from nearly single-phase bulk alloys produced by arc melting and high temperature homogenization annealing. The rhombohedral Th 2Zn 17-type crystal structure of the bulk alloy remains unaltered after the milling process, with almost unchanged values for the cell parameters.

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Long ball-milling of bcc-FeCr at different injected powers: Amorphization and partial crystallization @inproceedings{Loureiro2010LongBO, title={Long ball-milling of bcc-FeCr at different injected powers: Amorphization and partial crystallization}, author={J. M. Loureiro and B. …

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Crystallization of amorphous Fe90Zr10 under ball milling. Kwon YS(1), Kim JS, Kim JC, Kwon YJ, Povstugar I, Yelsukov E, Kim CE, Lee HS. Author information: (1)Research Center for Machine Parts and Materials Processing, School of Materials Science and Engineering, University of Ulsan, Namgu Mugeo 2-Dong, Ulsan 680-749, Korea.

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12%Microstructure evolution in a melt-spun amorphous Fe77.2Mo0.8Si9B13 alloy subjected to high-energy ball milling was investigated by means of X-ray diffraction (XRD), a transmission electron microscope (TEM), and a differential scanning calorimeter (DSC). It was found that during ball milling, crystallization occurs in the amorphous ribbon sample with precipitation of an α …

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Crystal structures of a DT4, b DT5, and c DT6. For each complex, the structure of a pair of closest neighbour molecules was extracted. For clarity, hydrogen atoms are omitted.

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Ball-milling to very low crystallinity was performed with ~1 g of pre-milled powder in agate bowls (12 mL volume) with agate balls (10 mm diameter), at 600 rpm for 10 h, with cycles of 30 min milling and 30 min pausing. The ball milling was divided into short periods principally to …

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A detailed investigation is presented for the solvent-free mechanochemical synthesis of zinc oxide nanoparticles from ε-Zn(OH) 2 crystals by high-energy ball milling. Only a few works have ever explored the dry synthetic route from ε-Zn(OH) 2 to ZnO. The milling process of ε-Zn(OH) 2 was done in ambient conditions with a 1:100 powder/ball mass ratio, and it produced uniform ZnO ...

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The microstructure, crystal structure, and magnetic properties were studied for (Nd,Tb) 2 Fe 14 B nanoflakes prepared by surfactant-assisted high-energy ball milling (HEBM). Effects of ball-milling time on the c-axis crystallographic alignment, morphology, and magnetic properties of (Nd,Tb) 2 Fe 14 B nanoflakes were systematically investigated. X-ray diffraction (XRD) results …

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Ball milling approach to prepare new Cd(II) and Zn(II) complexes; characterization, crystal packing, cyclic voltammetry and MOE-docking agrees with biological assay Journal of Molecular Structure ( IF 3.196) Pub Date :, DOI: 10.1016/j.molstruc.2020.128473

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The nanometersized amorphous Si{sub 3}N{sub 4} and Si-N-C powders are subjected by high-energy ball milling in order to induce a crystallization process. It was found that after initial 4 seconds of milling a-Si{sub 3}N{sub 4} may rapidly crystallize into a …

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The amorphous-to-crystalline transition during thermal annealing of amorphous Al80Fe20 alloy powders prepared by ball milling was investigated by means of magnetothermal analysis and X-ray diraction. Following structural relax-ation and stress relief processes, a metastable phase precipitates during primary crystallization, and a mixture of in ...

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The crystallization, microstructure and density of both the powders were studied with and without ball milling. The ball milled powders prepared in conventional method were found to be sintered upto 92% of the theoretical density, whereas the powders prepared in constant pH precipitation method after ball milling showed 97% of the theoretical ...

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The multicycle CO2 capture performance of CaO derived from the calcination of ball-milled limestone and dolomite have been tested under high temperature and high CO2 concentration environment for the first time. Here it is shown that the CO2 capture capacity of CaO is inversely related to the milling power applied to the starting mineral and the size of nascent CaO nanocrystals. In situ X-ray ...

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Amorphization and mechanical crystallization during ball milling of Fe-33.3 at% Ti system was studied. X-ray Diffraction (XRD) was used for phase identification and study of amorphization. It was revealed that the amorphous phase forms directly at lower energies without formation of intermetallic phases.

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Milling up to 800 h causes amorphous Co 70.3 Fe 4.7 Si 10 B 15 alloy, prepared in the form of thin ribbon, to partially crystallize thus forming a powder material consisting of an amorphous phase and fcc-Co nanocrystals with an average grain size of about 10 nm. A gradual increase of the nanocrystalline fcc-Co fraction, produced by ball milling, was detected.

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Request PDF | Crystallization of CoFeSiB metallic glass induced by long-time ball milling | Milling up to 800 h causes amorphous Co70.3Fe4.7Si10B15 alloy, prepared in the form of thin ribbon, to ...

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The high coercivity of 26.2 kOe for SmCo5 nanoflakes are obtained by multistep (three steps) surfactant-assisted ball milling. The magnetic properties, phase structure and …

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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. Analyses of samples milled at different speeds suggested that the observed crystallization is a ...

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Ball Milling of the Partial Amorphous Fe 78 Si 12 B 10 Alloy ... The Influence of Ball Milling on the Kinetics of Crystallization of the Amorphous Alloy Ni 78 Si 10 B 12 p.289. Ball Miling of Co-Fe-Si-B Alloys p.297. Relaxation Behavior of Amorphous Alloys Produced by Mechanical Alloying p.305 ...

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