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  Reactive ball milling to produce nanocrystalline ZnODRO

  Ball milling of zinc powders in oxygen atmosphere leads to nanocrystalline ZnO. The average grain size has a value of 9 nm. The zinc oxidation proceeds gradually. It is compared with the combustion oxidation reactions of metals (Zr Ti Fe and Sn) reported previously.

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  Reactive Nano-Composites Structure-Reactivity

  2013-8-7 · Reactive Nano-Composites Structure-Reactivity Relationship Research Objectives The primary goal of the work is to investigate the effect of short-term (<15 min) high energy ball milling (HEBM) on the microstructure and the reactivity of variety of nanostructured reactive composite materials such as Ni-Al Ti-C Ti-Si Ta-C Si-C . Approach

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  Magnesium–carbon hydrogen storage hybrid materials

  2016-12-2 · reactive ball milling in hydrogen atmosphere (HRBM) of Mg with catalytic additives has been proven to be the most effi-cient way to further improve the re-hydrogenation process 4 5 . Some materials for example containing the additive of BCC-V alloy were characterised by exceptional perfor-mances during their re-hydrogenation which started

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  High-entropy (HfTaTiNbZr)C and (HfTaTiNbMo)C carbides

  2020-8-1 · Another attractive route is reactive high-energy ball milling (R-HEBM) also known as mechanochemical synthesis. In this technique the elemental powders of metals and carbon are used to prepare a reactive mixture which upon milling forms the designated phase.

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  Silicon nanoparticles synthesised through reactive high

  2018-6-9 · we utilised reactive high-energy ball milling (RHEBM) a one-pot and top-down mechanochemical method to prepare alkyne-passivated SiNPs. 10 As silicon wafers are broken into smaller and smaller fragments during the RHEBM process the freshly prepared silicon surfaces are highly reactive. They possess dangling bonds consisting of surface bound

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  LiMn(BH 4 ) 3 /2LiCl Composite Synthesized by Reactive

  Abstract A LiMn(BH 4) 3 /2LiCl composite was prepared by reactive ball-milling a mixture of LiBH 4 and MnCl 2 and its dehydrogenation properties were investigated.The results indicate that the LiMn(BH 4) 3 /2LiCl composite consists of crystalline LiCl and amorphous LiMn(BH 4) 3 and decomposes at 135-190 °C with an activation energy of 114.0 kJ·mol-1 resulting in an emission of 7.0 (w) gas.

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  Facile synthesis and regeneration of Mg(BH4)2 by high

  2013-1-28 · Facile synthesis and regeneration of Mg(BH4)2 by high energy reactive ball milling of MgB2. Gupta S(1) Hlova IZ Kobayashi T Denys RV Chen F Zavaliy IY Pruski M Pecharsky VK. Author information (1)Ames Laboratory Iowa State University Ames IA 50011 USA. Erratum in Chem Commun (Camb). 2013 Dec 2849(100) 11821.

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  Contamination Effects on Improving the Hydrogenation

  2018-9-16 · The reactive milling atmosphere (nitrogen or hydrogen gases) was gettered and absorbed completely by the first atomically clean surfaces of the metallic ball-milled powders to react in a same manner as a typical gas–solid reaction 5 .

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  Highlighting of a Single Reaction Path during Reactive

  2019-12-12 · An experimental procedure has been developed to quantify in situ hydrogen absorption in a reactive ball-milling (RBM) device. It provides an internal calibration of the hydrogen temperature during milling and considers hydrogen as a real gas. Its accuracy has been evaluated to 5 by comparison with crystallographic and thermal decomposition experiments on magnesium hydride and Mg2TM (TM = Fe

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  LiMn(BH 4 ) 3 /2LiCl Composite Synthesized by Reactive

  Abstract A LiMn(BH 4) 3 /2LiCl composite was prepared by reactive ball-milling a mixture of LiBH 4 and MnCl 2 and its dehydrogenation properties were investigated.The results indicate that the LiMn(BH 4) 3 /2LiCl composite consists of crystalline LiCl and amorphous LiMn(BH 4) 3 and decomposes at 135-190 °C with an activation energy of 114.0 kJ·mol-1 resulting in an emission of 7.0 (w) gas.

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  Contamination Effects on Improving the Hydrogenation

  2018-9-16 · The reactive milling atmosphere (nitrogen or hydrogen gases) was gettered and absorbed completely by the first atomically clean surfaces of the metallic ball-milled powders to react in a same manner as a typical gas–solid reaction 5 .

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  Nickel Ferrite Powder Obtained by High Energy Reactive

  Nanocrystalline nickel ferrite powder was obtained using high energy reactive ball milling technique. Nickel oxide (NiO) and iron oxide (Fe2O3) powders were used as starting material. Milling was performed in air atmosphere using a planetary ball mill. Milling time was up to 30 hours. The product of milling was annealed at 350 oC for 4 hours in order to eliminate the internal stresses and

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  Aqueous pretreatment for reactive ball milling of

  2013-5-15 · Aqueous swelling pretreatment of cellulose was found highly effective for reactive ball milling to prepare surface-esterified cellulose nanofibers. Compared with starting from dry cellulose water- or 2 NaOH-pre-swollen materials were esterified and dispersed in significantly shorter milling time. Especially commercial kraft pulp was difficult to

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  Reactive and Nonreactive Ball Milling of Tin‐Antimony (Sn

  2019-7-18 · Reactive ball milling of Sn and Sb using a planetary ball mill leads to the phase‐pure intermetallic compound β‐SnSb. Compared with Sn   Sb SnSb shows excellent performance with a specific capacity exceeding 400 mAh g −1 after 190 cycles and a

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  High-energy ball milling to enhance the reactivity of

  2021-6-10 · High-energy ball-milling is proven to be an effective technique for manufacturing reactive aluminum nanopowders. The procedure of milling presented in this work allows the elaboration of aluminum powders with specific surface areas around 20

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  Reactive and Nonreactive Ball Milling of Tin‐Antimony (Sn

  2019-7-18 · Reactive ball milling of Sn and Sb using a planetary ball mill leads to the phase‐pure intermetallic compound β‐SnSb. Compared with Sn Sb SnSb shows excellent performance with a specific capacity exceeding 400 mAh g −1 after 190 cycles and a

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  Synthesis of Bulk Reactive Ni-Al Composites Using High

  2021-3-15 · A major drawback of ball milling is the need of a sintering step to form bulk pieces of the reactive material. However this is not possible as the targeted reactions would already proceed. Therefore we investigate the ability of high pressure torsion as an alternative process capable to produce bulk nanocomposites from powder mixtures.

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  Reactive Ball Milling Scientific.Net

  Abstract Nanocrystalline nickel ferrite powder was obtained using high energy reactive ball milling technique. Nickel oxide (NiO) and iron oxide (Fe2O3) powders were used as starting material. Milling was performed in air atmosphere using a planetary ball mill. Milling time was up to 30 hours.

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  The formation mechanism and structural characterization of

  Mg2(Fe0.5Co0.5) elemental powder mixtures were processed by reactive ball milling in a H2 (orD2) atmosphere at about 50 bar. The changes of pressure were monitored during milling and hydrogen absorption was detected within the first 10 h of milling. X-ray and neutron powder diffraction analysis fol

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  The formation mechanism and structural characterization of

  Mg2(Fe0.5Co0.5) elemental powder mixtures were processed by reactive ball milling in a H2 (orD2) atmosphere at about 50 bar. The changes of pressure were monitored during milling and hydrogen absorption was detected within the first 10 h of milling. X-ray and neutron powder diffraction analysis fol

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  Understanding reaction sequences and mechanisms during

  2017-10-27 · Such a characteristic abrupt temperature increment represents an ignition stage in reactive ball milling 1 2 3 . The ignition effect was observed to be instantaneous and is typically known to be activated by collision either between the balls or between a ball and the wall of the vial 1 2 3 31 32 .

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  Reactive Ball Milling to Produce Nanocrystalline ZnO

  Similarly ZnO nano particles were synthesized using Reactive Ball Milling 7 . This work focus on other Mechanical machining methods such as surface grinding for synthesis of C Fe 2 O 3 Al ZnO

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  Reactive Ball Milling to Fabricate Nanocrystalline

  The room-temperature reactive ball milling (RBM) approach was employed to synthesize nanostructured fcc-titanium nitride (TiN) powders starting from milling hcp-titanium (Ti) powders under 10 bar of a nitrogen gas atmosphere using a roller mill. During the first and intermediate stage of milling the agglomerated Ti powders were continuously disintegrated into smaller particles with fresh

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  Nickel Ferrite Powder Obtained by High Energy Reactive

  Nanocrystalline nickel ferrite powder was obtained using high energy reactive ball milling technique. Nickel oxide (NiO) and iron oxide (Fe2O3) powders were used as starting material. Milling was performed in air atmosphere using a planetary ball mill. Milling time was up to 30 hours. The product of milling was annealed at 350 oC for 4 hours in order to eliminate the internal stresses and

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  Reactive and Nonreactive Ball Milling of Tin‐Antimony (Sn

  2019-7-18 · Reactive ball milling of Sn and Sb using a planetary ball mill leads to the phase‐pure intermetallic compound β‐SnSb. Compared with Sn Sb SnSb shows excellent performance with a specific capacity exceeding 400 mAh g −1 after 190 cycles and a

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  Facile Ball-Milling Synthesis of CuO/Biochar

  2020-4-27 · Facile Ball-Milling Synthesis of CuO/Biochar Nanocomposites for Efficient Removal of Reactive Red 120 Xiaoqian Wei Xin Wang Bin Gao Weixin Zou and Lin Dong Cite This ACS Omega 2020 5 5748−5755 Read Online ACCESS Metrics More Article Recommendations s

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  Synthesis of boron nitride nanotubes at low temperatures

  2001-1-1 · The reactive ball-milling method for preparing BN nanotubes as demonstrated in this Letter provides an alternative formation method which could form the basis of a practical production process with the advantages of low cost and ease of control.

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