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Oct 01 1988 · Physica B 153 1988 93135 NorthHolland Amsterdam AMORPHIZATION BY BALL MILLING A REVIEW AW WEEBER and H BAKKER Natuurkundig Laboratoriurn der Universiteit van Amsterdam Valckenierstraat 65 NLIOI8 XE Amsterdam The Netherlands Received 1 March 1988 A new method for the preparation of amorphous alloys is the mechanical alloying process
Oct 01 1988 · Physica B 153 1988 93135 NorthHolland Amsterdam AMORPHIZATION BY BALL MILLING A REVIEW AW WEEBER and H BAKKER Natuurkundig Laboratoriurn der Universiteit van Amsterdam Valckenierstraat 65 NLIOI8 XE Amsterdam The Netherlands Received 1 March 1988 A new method for the preparation of amorphous alloys is the mechanical alloying process
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Oct 01 1988 · Amorphization by ball milling A review NASAADS 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
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Amorphization by ball milling A review 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
Further Details
For a review a 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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Variations in the aptitudes toward amorphization of the three L12type alloys under ballmilling conditions are attributed in part to the differences in the lattice stability terms of their
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amorphization by ball milling a review Amorphization of Zr–Al solid solutions under The effects of temperature on the amorphization of Zr–Al solid solutions have been investigated by ball milling Zr100−xAlx powder blends
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Effect of balltopowder weight ratio on the amorphization reaction of Al50Ta50 by ball milling Journal of the Less Common Metals Vol 169 Issue 2 p 235
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The amorphization process during ball milling can be seen from the images of transmission electron microscopy TEM in Fig 2a which were taken from samples milled for different lengths of time The TEM images show that the size and number of NiZr crystals decrease with increasing milling time and a full amorphization is achieved after milling for 165 h
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Highenergy ball milling is effective in getting welldispersed slurry 7−9 The preparation procedure is summarized in Fig commercially available PZT powders APC 850 were highenergy ball milled to get the desired particle size Secondly a selected dispersant was added to the milled powders to get the surfacemodified powders
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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 Metallurgy The University of Cambridge Cambridge CB2 3QZ UK Fax 44 1223‐334567
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Amorphization by ball milling A review 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
Further Details
For a review a 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
Further Details
Variations in the aptitudes toward amorphization of the three L12type alloys under ballmilling conditions are attributed in part to the differences in the lattice stability terms of their
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Structural changes occurring in the crystalline element selenium upon highenergy ball milling has been studied Milling experiments have been performed at the ambient temperature and at a cryogenic temperature of 100 °C respectively The final milling products under both conditions were found to be a fully amorphous phase after several hours of mechanical milling
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amorphization by ball milling a review Amorphization of Zr–Al solid solutions under The effects of temperature on the amorphization of Zr–Al solid solutions have been investigated by ball milling Zr100−xAlx powder blends
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The optimum parameters for the milling process were ball speed of 350 rmin solidliquid ratio of 110 raw material particle size with 05 mm and number of balls of 20 steel ball Φ 10 mm
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Oct 26 2016 · The purposes of this study were to clarify the amorphization by ball milling of atorvastatin calcium sesquihydrate AT and to analyse the change in dissolution kinetics Methods The amorphous AT was prepared from crystal AT by ball milling and analysed in terms of the changes of its physicochemical properties by powder X‐ray diffraction
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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 SI2 Ballmilling Amorphization
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Oct 18 2020 · This review presents the methods of solid state amorphization described in literature supercooling of liquids milling lyophilization spray drying dehydration of crystalline hydrates with
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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
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Mar 14 2019 · However there are many challenges associated with the production of HEAs using MA which include contamination during milling and high propensity of oxidation The present review provides a comprehensive understanding of various HEAs produced by MA so far with the aim to bring out the governing aspects of phase evolution thermal stability
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In this study the putative correlation between the molecular mobility of a polymer and the ball milling drug amorphization kinetics ie 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 chloramphenicol CAP In general IND had lower ta values than CAP indicating
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