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Oct 01, 1988 Physica B 153 (1988) 93-135 North-Holland, Amsterdam AMORPHIZATION BY BALL MILLING. A REVIEW A.W. WEEBER and H. BAKKER Natuurkundig Laboratoriurn der Universiteit van Amsterdam, Valckenierstraat 65, NL-IOI8 XE Amsterdam, The Netherlands" Received 1 March 1988 A new method for the preparation of amorphous alloys is the mechanical alloying process.
A new method for the preparation of amorphous alloys is the mechanical alloying process. So far, three amorphization reaction types were observed when this technique is used. Which reaction type occurs depends on the local conditions during the milling, such as
Oct 01, 1988 Amorphization by ball milling. A review Weeber, A. W.; Bakker, H. Abstract. A new method for the preparation of amorphous alloys is the mechanical alloying process. So far, three amorphization reaction types were observed when this technique is used.
This suggests that amorphization in metal-metalloid systems, i.e. ductile-brittle systems, like Fe40Ni40P14B6 is fully achieved by ball milling alone using high milling energy and metalloid ...
The microstructure of NiZr 2 in the course of amorphization by ball-milling is studied by transmission electron microscopy (TEM) and x-ray diffraction (XRD). The evolution from the initial fully crystalline alloy to a fully amorphized material is described. It is shown that prior to amorphization, the powder aggregates achieve a 100% nanocrystalline structure; the amorphous phase then appears ...
The alloys were ground by a planetary ball mill for 2 h in order to obtain a fine powder. The Mg-23.5Ni-5Cu alloy had crystalline Mg and Mg2Ni phases. Mg-23.5Ni-5Cu had an effective hydrogen ...
Apr 10, 2013 Ball‐Milling‐Induced Amorphization of Zeolitic Imidazolate Frameworks (ZIFs) for the Irreversible Trapping of Iodine ... We discover that this guest retention is greatly enhanced upon facile amorphisation by ball milling, ... A review, Chemical Engineering Journal, 10.1016/j.cej.2016.07.073, 306, (369-381), ...
Apr 10, 2013 Reviews; Fellows 2018/19; Full Paper. Ball‐Milling‐Induced Amorphization of Zeolitic Imidazolate Frameworks (ZIFs) for the Irreversible Trapping of Iodine. Dr. Thomas D. Bennett. Department of Materials Science and Metallurgy, The University of Cambridge, Cambridge, CB2 3QZ (UK), Fax: (+44) 1223‐334567 ...
To prepare the powder for the use of the kinetic spray, the amorphization and grain refinement of ZrO 2 powder in mechanical ball milling were studied. The results showed that the amorphization and grain refinement were improved because of the formation of solid solution when the CeO 2 agent was added. Subsequently, a nearly spherical powder ...
Effect of ball-to-powder weight ratio on the amorphization reaction of Al50Ta50 by ball milling. Journal of the Less Common Metals, Vol. 169, Issue. 2, p. 235.
The BN destruction and amorphization under ball milling. Fig. 2 shows the dependence of specific surface area measured by BET on the dose of mechanical treatment. At the initial stage of mechanical
This suggests that amorphization in metal-metalloid systems, i.e. ductile-brittle systems, like Fe40Ni40P14B6 is fully achieved by ball milling alone using high milling energy and metalloid ...
Abstract. We report on the crystal to amorphous phase transition induced by ball — milling in pure Si and pure Ge powders. Based on X-ray diffraction patterns, scanning and transmission electron micrographs, EDX microanalyses, differential thermal analyses and differential scanning calorimetry, it seems that amorphization
The microstructure of NiZr 2 in the course of amorphization by ball-milling is studied by transmission electron microscopy (TEM) and x-ray diffraction (XRD). The evolution from the initial fully crystalline alloy to a fully amorphized material is described. It is shown that prior to amorphization
Effect of ball-to-powder weight ratio on the amorphization reaction of Al50Ta50 by ball milling. Journal of the Less Common Metals, Vol. 169, Issue. 2, p. 235. Journal of the Less Common Metals, Vol. 169,
Apr 10, 2013 Reviews; Fellows 2018/19; Full Paper. Ball‐Milling‐Induced Amorphization of Zeolitic Imidazolate Frameworks (ZIFs) for the Irreversible Trapping of Iodine. Dr. Thomas D. Bennett.
To prepare the powder for the use of the kinetic spray, the amorphization and grain refinement of ZrO 2 powder in mechanical ball milling were studied. The results showed that the amorphization and
Oct 22, 2013 It provides advantages in terms of dissolution rate and bioavailability. This review presents the methods of solid- -state amorphization described in literature (supercooling of liquids, milling, lyophilization, spray drying, dehydration of crystalline hydrates), with the emphasis on milling.
alongside a 10 mm stainless steel milling ball at room temperature and sealed properly. This combination was then subjected to 30 Hz milling in a Retsch MM400 grinder mill for varying times. After milling, the amorphous milling products were recovered and characterized. SI-2: Ball-milling Amorphization
Jun 27, 2000 Complete intermixing in the solid state can be achieved by e.g. ball milling of powders or cold rolling of foils. Compared to ball milling, cold rolling of layered elemental foils provides
Dec 21, 2004 We present a new approach, namely ball milling, to synthesize amorphous boron nitride (a‐BN).The amorphization kinetics are revealed by X‐ray diffractometry (XRD), high‐resolution
Dec 30, 2002 Ball milling the drugs alone for 48 h resulted in no amorphization. X‐ray powder diffractometry (XPD), birefringence, and differential scanning calorimetry (DSC) data indicated amorphization of all the four drugs on ball milling with Neusilin.
Ball-milling-induced amorphization in Ni x Zr y compounds: A parametric study Y. Chen, M. Bibole, R. Le Hazif, and G. Martin Phys. Rev. B 48 , 14 – Published 1 July 1993
Abstract. We report on the crystal to amorphous phase transition induced by ball — milling in pure Si and pure Ge powders. Based on X-ray diffraction patterns, scanning and transmission electron micrographs, EDX microanalyses, differential thermal analyses and differential scanning calorimetry, it seems that amorphization
The BN destruction and amorphization under ball milling. Fig. 2 shows the dependence of specific surface area measured by BET on the dose of mechanical treatment. At the initial stage of mechanical
Ball-milling-induced amorphization in NixZry compounds: A parametric study Chen, Ying (Ian), Bibole, M., Le Hazif, R. and Martin, ... Physical Review B Volume number 48 Issue number 1 Start
Apr 10, 2013 Ball‐Milling‐Induced Amorphization of Zeolitic Imidazolate Frameworks (ZIFs) for the Irreversible Trapping of Iodine Dr. Thomas D. Bennett Department of Materials Science and
We report the rapid amorphization of the prototypical substituted zeolitic imidazolate framework, ZIF-8, by ball-milling.The resultant amorphous ZIF-8 (a m ZIF-8) possesses a continuous random network (CRN) topology with a higher density and a lower porosity than its crystalline counterpart.A decrease in thermal stability upon amorphization
To prepare the powder for the use of the kinetic spray, the amorphization and grain refinement of ZrO 2 powder in mechanical ball milling were studied. The results showed that the amorphization and
Amorphization by mechanical milling (MM), where a single composition (e.g. intermetallic compound) is milled requires the accumulation of defects to induce the transformation. It is concluded that anti-site
Oct 22, 2013 It provides advantages in terms of dissolution rate and bioavailability. This review presents the methods of solid- -state amorphization described in literature (supercooling of liquids, milling, lyophilization, spray drying, dehydration of crystalline hydrates), with the emphasis on milling.
Feb 03, 2012 Touzik et al[102] studied the structural transformations and amorphization of graphite upon high-energy ball-milling under argon and hydrogen atmosphere.Up to approximately 40% of the adsorbed nitrogen was stored in ultra micropores with diameter less than 0.8 nm and it was independent from milling
The effects of temperature on the amorphization of Zr–Al solid solutions have been investigated by ball milling Zr 100−x Al x powder blends at different temperatures. At low milling temperatures, the
Enhanced Amorphization by Sn Substitution for Si and B in the Ball-Milled Ti 50 Ni 22 Cu 18 Al 4 Si 4 B 2 Alloy p.488. Electron Structure, Stability and Nanocrystallization of Al - Based Amorphous Alloys
Oct 27, 2008 Amorphous solids are conventionally formed by supercooling liquids or by concentrating noncrystallizing solutes (spray-drying and freeze-drying). However, a lot of pharmaceutical processes may also directly convert compounds from crystal to noncrystal which may have desired or undesired consequences for their stability. The purpose of this short review
Feb 03, 2012 ball milling as a non-equilibrium processing method which can be analogous to rapid solidification. This review will first describe the equipment and some of the process va-riables used for high energy ball milling. Next, the physics of the milling
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