WEBDownload Citation | On Nov 1, 2023, Mengwei Wang and others published Amorphization of different furosemide polymorphic forms during ball milling: tracking solidtosolid phase transformations ...
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WEBWe report on the crystal to amorphous phase transition induced by ball — milling in pure Si and pure Ge powders. Based on Xray diffraction patterns, scanning and transmission electron micrographs, EDX microanalyses, differential thermal analyses and differential scanning calorimetry, it seems that amorphization occurs during the continuous .
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WEBDOI: /S(99)000671 Corpus ID: ; HRTEM and EELS studies of defects structure and amorphouslike graphite induced by ballmilling article{Huang1999HRTEMAE, title={HRTEM and EELS studies of defects structure and amorphouslike graphite induced by ballmilling}, author={Jian Yu Huang}, .
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WEBJan 1, 1991 · For a review: a) and H. Bakker. ... The present results suggest the importance of an energetically uphill process through ball milling for amorphization of the system with a positive ...
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WEBSemantic Scholar extracted view of "Amorphization of organic compounds by ball milling" by J. Font et al. ... {Font1997AmorphizationOO, title={Amorphization of organic compounds by ball milling}, author={Joana Tarres Font and Joaquim Muntasell and Eduard Cesari}, journal={Materials Research Bulletin}, year={1997}, volume={32}, .
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WEBSemantic Scholar extracted view of "Amorphization of single composition powders by mechanical milling" by C. Koch
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WEBDec 15, 2023 · Three amorphization pathways were observed: i) crystalline form Ⅰ converts directly to an amorphous form; ii) crystalline form II converts into crystalline form I after 5 min of ball milling while at the same time form I and possibly form II (a small portion that did not convert to form I) progress towards complete amorphization during ball ...
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WEBMar 1, 1996 · The ultimate crystalline size of graphite, estimated by the Raman intensity ratio, of nm for the agate ballmill is smaller than that of nm for the stainless ballmill, while the milling ...
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WEBJul 11, 2012 · The rapid amorphization of the prototypical substituted zeolitic imidazolate framework, ZIF8, by ballmilling is reported, which possesses a continuous random network topology with a higher density and a lower porosity than its crystalline counterpart. We report the rapid amorphization of the prototypical substituted zeolitic imidazolate .
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WEBJun 1, 1995 · At a milling intensity of 8 the rate of amorphization was found to be higher and the sample became amorphous within 12 h of mechanical alloying. The XRD patterns of Tis Nis after 20 h of milling, with different number of balls at a milling intensity of 6 and a ball: powder weight ratio of 10:1 are shown in Fig. 2.
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WEBFeb 25, 2023 · Request PDF | Experimental and molecular dynamic studies of phase transformation and amorphization in silicon during highenergy ball milling | Nanosized and amorphous silicon (aSi) have a wide ...
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WEBSep 21, 2022 · The present review summarizes the most representative studies that applied ball milling to obtain different formulations with the enhanced properties of either cocrystal or coamorphous systems, using low molecular weight components and polymorphs. ... As previously mentioned in the mechanism for amorphization by .
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WEBApr 11, 2022 · This density range falls into the gap between. LDA ( g cm –3) and HDA ( g cm –3). (10, 12) The amorphous ice obtained from ball. milling is therefore named mediumdensity amorphous ice ...
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WEBThe kinetics of amorphization during ball milling is generally analyzed using two different approaches: the classical JohnsonMehlAvramiKolmogorov (JMAK) theory and Delogu and Cocco's model for which a region deterministically transforms after it reaches a certain number of collisions. The appliion of JMAK analysis to the latter model predicts .
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WEBDec 1, 2004 · The ball milling was performed in a high energy planetary mill (Pulverisette 7—Fritsch) at room temperature (RT) and under a dry nitrogen atmosphere. We used ZrO 2 milling jars of 43 cm 3 with seven balls (Ø=15 mm) of the same material. One gram of material was placed in the planetary mill corresponding to a ball/sample weight ratio of .
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WEBWe report the rapid amorphization of the prototypical substituted zeolitic imidazolate framework, ZIF8, by resultant amorphous ZIF8 (a m ZIF8) possesses a continuous random network (CRN) topology with a higher density and a lower porosity than its crystalline decrease in thermal stability upon amorphization is also .
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WEBMay 27, 2020 · In this study, the putative correlation between the molecular mobility of a polymer and the ball milling drug amorphization kinetics (, time to reach full drug amorphization, ta) was studied using different grades of dextran (Dex) and polyvinylpyrrolidone (PVP) and the two model drugs indomethacin (IND) and .
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WEBThe amorphization kinetics are revealed by Xray diffractometry (XRD), highresolution transmission electron microscopy (HRTEM), and electron energy loss spectroscopy (EELS). HRTEM investigations indie that, in the early stage of milling, the thick sp 2 layers are sliced into many thinner sheets because of cleavage along the basal planes. In ...
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WEBJan 1, 2001 · In this review, our focus is on amorphization induced by mechanical deformation which can be imparted by a variety of means, prominent among which are tribological processes, severe plastic deformation, nanoindentation, shock compression, diamond anvil cell and ball milling/mechanical alloying. ... Ball milling can be divided in .
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WEBAmorphization of ZIF8 and another isostructural MOF, ZIFmnIm (Zn(mnIm) 2 where mnIm = 4methyl5nitroimidazolate), during ball milling 85 also significantly enhances their iodine retention abilities, particularly in the case of ZIFmnIm.
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WEBDec 21, 2004 · We present a new approach, namely ball milling, to synthesize amorphous boron nitride (aBN), The amorphization kinetics are revealed by Xray diffractometry (XRD), highresolution transmission electron microscopy (HRTEM), and electron energy loss spectroscopy (EELS), HRTEM investigations indie that, in the early stage of .
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WEBJan 1, 2001 · Phenomenology of Amorphization by MM Amorphization by MM consists of energizing the crystalline solid by the severe cyclic deformation that ballmilling provides. It is significant that ballmilling has been found to induce extensive plastic deformation even into extremely brittle materials such as A 15 intermetallic compounds like 'hn^Sn (6).
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WEBJun 7, 2018 · This review summarizes the recent research in preparing pharmaceutical formulations (coamorphous, cocrystals, and polymorphs) through ball milling to enhance the physicochemical properties of ...
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WEBMay 27, 2013 · It is discovered that this guest retention is greatly enhanced upon facile amorphisation by ball milling, particularly in the case of ZIFmnIm, for which I2 loss is retarded by as much as 200 °C. The I2sorption and retention properties of several existing zeolitic imidazolate frameworks (ZIF4, 8, 69) and a novel framework, ZIFmnIm .
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WEBMay 1, 2013 · The mass ratio of ball to sample was kept at 50:1 [46]. The rotation speed was set at 350 rev min − 1 and a milling duration of 120 min. The comilled IDMC–PVP (COM IDMC–PVP) powder was characterized immediately after harvesting the sample from the milling jars at the end of the milling process. SAS coprecipitation
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WEBJul 1, 1990 · Solidstate amorphization reactions resulting from the severe mechanical deformation obtained by highenergy ball milling are reviewed. Two classes of such reactions are discussed: 1. "mechanical alloying" where material transfer occurs between elemental powders or alloys, and 2. "mechanical milling" where an equilibrium .
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WEBApr 15, 2017 · Amorphization in metallic systems (intermetallic compounds, metallic multilayers, metallic solid solutions) has been produced by different means such as solidstate reaction [85], pressure [86], [87], ball milling [88], [89], cold plastic deformation [90], and irradiation [91], [92]. The common ground of amorphization by solid state reaction ...
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WEBJan 31, 2011 · Amorphization of metallic titanium by ball milling was presented. With the introduction of continuous pickup of impurities, hexagonally closepacked (hcp) titanium transformed gradually into an amorphous phase without experiencing any intermediate stage of forming a detectable metastable compound phase.
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WEBXray diffraction has been used to investigate the kinetics of amorphization through ballmilling at 20 Hz, for five zeolitic imidazolate frameworks (ZIFs) and shows thatAmorphous ZIFzni is structurally indistinguishable from amorphous CdIF1 with both structures retaining the same shortrange order that is present in their crystalline precursors.
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WEBAmorphization of zeolite ZSM5 by ball milling" by C. Kosanović et al. Semantic Scholar extracted view of "Mechanochemistry of zeolites: Part 3. Amorphization of zeolite ZSM5 by ball milling" by C. Kosanović et al. Skip to search form Skip to ... Recrystallization, and Dealumination (A Review) P. S. Kuznetsov K. Dementiev +4 authors A. Maximov.
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WEBMay 1, 2003 · CRMA by ball milling was carried out in the magnetomill, UniBallMill 5 ( Scientific Engineering Pty Ltd., Australia) [5][6][7][8] [9]. The milling mode in this magnetomill was adjusted ...
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WEBAn intermetallic compound c –NiZr and a mixture of elemental powders of nickel and zirconium [Ni 50 Zr 50 (at. %)] have been mechanically ground (MG) and mechanically alloyed (MA), respectively, using a highenergy ball mill in various atmospheres. The products were characterized by xray diffraction, transmission electron microscopy, .
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WEBJul 1, 1993 · Massobrio C, Pontikis V V, Martin G. Phys Rev B Condens Matter, (15): 1990. MED: . The preparation of amorphous NiZr alloys by different ballmilling techniques. Weeber. Physica B+C, (3) 1987. Computer simulation studies of radiation induced amorphization. LIMOGE.
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