— We perform an investigation of ion-beam mixing in the immiscible system Ag–Cu based on cross-sectional transmission electron microscopy. Multilayered samples consisting of ten periods of (6.7 nm Cu/11.2 nm Ag) are irradiated at temperatures ranging from 25 to 225 °C with normally incident 1 MeV Kr ions to doses in the range 1–2×1016 …
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Acta Materialia 50 (2002) 4695–4709 Electron microscopy nanoscale characterization of ballmilled Cu–Ag powders. Part I: Solid solution synthesized by cryo-milling S. Zghal a,b, M.J. Hÿtch c, J. …
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s Zghal broyage a boulets cu ag. s Zghal broyage a boulets cu ag T11:09:55+00:00 boulets de broyage English translation – Linguee. Broyage du c ru/séchage en broye ur à boulets, bro yeur vertical, etc x x Prehomogenisation o f raw materials x x Grinding of raw meal/ drying with ball mill, vertical mills etc x x Broyeur à boulets d or à vendreSamy s Broyeur …
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— Ball milling of Cu and Ag powders was performed in a SPEX 8000 shaker mill following the procedure used by Klassen and coworkers [5]. ... (SAED) may also be used to extract local texture in materials. Zghal et al. reported deformation texture in Cu-Ag ball milled powders by analyzing the SAED pattern of powders [16,17]. Boulay et.al used …
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— Secondly, while Cu and Ag are immiscible in the solid state at equilibrium, a complete nanostructured solid solution is obtained after ball milling at 85 K [19]. The difference in atomic number between Cu and Ag is sufficiently large to make composition fluctuations detectable through STEM annular dark-field imaging and in X-ray …
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Structural and Chemical Characterization of Cu-Ag and NiAg Nanocomposites Synthesized by High-Energy Ball Milling ... Slim Zghal. 2002, Materials Science Forum. See Full PDF Download PDF. See Full PDF Download PDF. Related Papers.
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— Abstract. Microstructures and phases stabilized at steady state by variable temperature ball milling of Cu 50 Ag 50 powders are characterized using transmission …
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— This is also supported by the measured K D of 0.054 ± 0.002 s −1 for the 4-h-milled Cu(OD) 0.8 Ag 0.2 (Supplementary Fig. 20), indicating its weak CO adsorption sites are more than those of Cu ...
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Microstructures and phases stabilized at steady state by variable temperature ball milling of Cu 50 Ag 50 powders are characterized using transmission and scanning transmission electron microscopy. Starting from chemically mixed and cold-worked powders obtained by room temperature milling, it is shown that, upon increasing the milling temperature, the …
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Mixtures of Cr and Mo elemental powders, with the nominal compositions Cr25Mo75, Cr50Mo50, and Cr75Mo25, are processed by high-energy ball milling at ambient temperature. Milling is observed to force the mixing of the immiscible bcc elements Cr and Mo into solid solutions. The lattice parameter of these solid solutions, measured by X …
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— Fe powders were mechanically processed by ball milling. The average size of coherent diffraction domains and the average strain content were determined by X-ray diffraction. A mathematical model was developed to describe the microstructural refinement process as a function of the number of collisions and to estimate the amount of powder …
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We present a study of nanostructured Cu-Ag material obtained by low temperature ball milling. The microstructural characterization is carried out using a wide variety of transmission electron microscopy (TEM) techniques from conventional dark-field imaging, selected area diffraction and energy dispersive X-ray spectrometry (EDS) to more …
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— The solid state reactions induced by high-energy ball milling of Al/Ni elemental mixtures at 25, 33, 50, 67 and 75 Ni at.% have been studied by X-ray diffraction and electron microscopy.
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— DOI: 10.1016/J.JALLCOM.2003.08.079 Corpus ID: 136494169; Nanocrystalline TiAl powders synthesized by high-energy ball milling: effects of milling parameters on yield and contamination
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We present a study of nanostructured Ag-Cu powder material obtained by variable temperature ball-milling. The microstructural characterization is carried out using a wide …
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Electron microscopy nanoscale characterization of ball-milled Cu–Ag … Semantic Scholar extracted view of "Electron microscopy nanoscale characterization of ball-milled Cu–Ag powders. Part I: Solid solution synthesized by cryo-milling" by S. Zghal et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo.
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— Structural and Chemical Characterization of Cu-Ag and Ni-Ag Nanocomposites Synthesized by High-Energy Ball Milling. S. Zghal, P. Bhattacharya, +2 …
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— Cu-Ag alloys in three different compositions (Cu – 25/50/75wt% Ag) were produced by powder consolidation followed by high-pressure torsion. Deformation was performed till a saturation regime was reached. The generated microstructures were investigated by transmission electron microscopy and vary from ultra-fine grained to …
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DOI: 10.1016/S1359-6454(00)00329-3 Corpus ID: 135577451; Forced mixing and nanoscale decomposition in ball-milled Cu-Ag characterized by APFIM @article{Wu2001ForcedMA, title={Forced mixing and nanoscale decomposition in ball-milled Cu-Ag characterized by APFIM}, author={F. Wu and P. Bellon and Allan J. …
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— It has been reported that mechanical milling of an Ag-Cu system produces a complete solid solution for the entire composition [11][12][13] [14] [15]; hence, Ag-Cu particles were mechanically ...
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— The use of a number of modern real space or nanoprobe techniques, carefully quantified, has led to a new description of the nanostructure of ball-milled …
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— Section snippets Experimental. Ball milling of Cu and Ag powders was performed following the procedure described in detail by Klassen et al. [6]. Powders of Cu and Ag were mixed to achieve the desired nominal (atomic) composition of Ag 50 Cu 50.All elevated-temperature millings were preceded by a 24. h milling treatment at ambient …
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Structural and Chemical Nanoscale Electron Microscopy Characterization of Ag-Cu Ball Milled Powders - Volume 9 Issue S02 - P. Bellon, S. Zghal, M. J. Hÿtch, J. -P. Chevalier, R. Twesten, F. Wu View
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Energies of the balls at different milling intensities and ball to powder weight ratios for Ti 50 Ni 50 (3 balls)
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Second, when ball milling is performed at elevated temperatures, Ag-Cu nanocomposites are synthesized at steady-state [3]. Nanocomposites can also be obtained by annealing at elevated temperature chemically mixed and cold-worked powders obtained by room temperature milling.
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It is well documented that low-temperature ball-milling can force immiscible elements, e.g., Cu and Ag, into solid solution. A slight increase of the milling temperature however results in a two- or even three-phase coexistence [1]. This coexistence is likely to take place at a nanometric scale since ball-milling results in the formation of grains with a size in the 10 …
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Second, when ball milling is performed at elevated temperatures, Ag-Cu nanocomposites are synthesized at steady-state [3]. Nanocomposites can also be obtained by annealing at elevated
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— In the case of alloys with positive heat of mixing, it is also sometimes possible to force a solid solution by low temperature milling (e.g., Cu-Ag), or to stabilize …
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