منزل •study on ball milling of tih2 and appliion in energetic

study on ball milling of tih2 and appliion in energetic

  • Characterization of TiH2 Powders Produced from TiCl4-MgH2 ...

    In this new method, the production of TiH2 powder at low temperature was investigated, which can be used for further dehydrogenation process to produce low-cost Ti powder. In this work, the effects of temperature, time, amount of titanium trifluoride (TiF3) as a catalyst, and ball-milling time of the MgH2 on the formation of TiH2 were investigated.

  • Characterization of In-Situ Cu–TiH2–C and Cu–Ti–C ...

    This study focuses on the fabrication and microstructural investigation of Cu–TiH2–C and Cu–Ti–C nanocomposites with different volume fractions (10% and 20%) of TiC. Two mixtures of powders were ball milled for 10 h, consequently consolidated by spark plasma sintering (SPS) at 900 and 1000 °C producing bulk materials with relative densities of 95–97%.

  • The effects of ball milling and the addition of blended ...

    P a g e | 1 The effects of ball milling and the addition of blended elemental aluminium on the densification of TiH 2 power E. Schumannab, J.-F. Silvaina, J.-L. Bobeta, M. Bardeta, Y. Luc, A. Kotousovb, M. Lamirand-Majimela a Institut de Chimie de la Matire Condensée de Bordeaux (ICMCB-CNRS), 87 Avenue du Dr Schweitzer, F- 33608, Pessac, France

  • tio2 nanoparticles by high energy ball mill

    METHODS OF PREPARATION OF NANOPARTICLES A REVIEW - … High energy mills include: Attrition Ball Mill Planetary Ball Mill Vibrating Ball Mill Low Energy Tumbling Mill High Energy Ball Mill 2.4.1 Attrition Ball Mill The milling procedure takes place by a stirring action of a agitator which has a vertical rotator central shaft with horizontal arms (impellers).

  • Bonding changes in single wall carbon nanotubes (SWCNT) on ...

    SEM photographs taken for SWCNT ball milled with Ti and TiH 2 are shown in Fig. 1.On comparing the images for identical milling time of 5 h for Ti and TiH 2, the Ti added SWCNT sample showed the presence of Ti clusters exceeding 10 μm.It is further observed that milling enhances Ti aggregation in the TiH 2 added SWCNT. The EDS spectra also indicated that C and Ti were present …

  • (PDF) In situ X-ray diffraction study of dehydrogenation ...

    The results an ultra-high-energy-high-pressure (UHEHP) ball milling suggested a catalysis effect of additives on the dehydrogena- technique demonstrated significantly improved kinetic tion of ball milled MgH2 materials. behavior [19e21]. ... Phase transformation of ball milled MgH2 e TiH2/ TiMn2 during dehydrogenation Similar in situ XRD ...

  • Stability of Catalyzed Magnesium Hydride Nanocrystalline ...

    Magnesium hydride is widely recognized as a promising material for hydrogen storage and thermal energy storage. Cyclic stability of the kinetics of catalyzed MgH2 was systematically investigated in this study. Three systems including MgH2–TiH2, MgH2–TiMn2, and MgH2–VTiCr were prepared by high energy ball milling. Volumetric hydrogen desorption and absorption cycles were …

  • Oxygen Reduction Behavior of HDH TiH2 Powder during ...

    In this study, oxygen reduction behavior of TiH2 powders during dehydrogenation process was investigated based on thermodynamics. During the hydrogenation–dehydrogenation (HDH) method to fabricate Ti powder, TiH2 was formed from a Ti sponge through hydrogenation annealing, and was easily pulverized even by ball milling due to its brittle nature. The ball milling process caused an ...

  • Density Functional Theory Study of the TiH2 Interaction ...

    To understand the role of titanium in catalyzing the de/rehydrogenation reactions in NaAlH4, it is necessary to determine the composition and structure of the catalytically active species that is (are) formed during ball milling and de/rehydrogenation reactions. One of the species that is thought to be catalytically active is TiH2. We have performed a density functional theory study of TiH2 ...

  • Effect of Milling Parameters on the Dehydrogenation ...

    The results indicated that, among a variety of MgH2/TiH2 ratios and milling conditions, samples with 9.1 mol % TiH2 milled in a dual-planetary high energy mill for 4 h under 15 MPa hydrogen pressure were found to be the optimal materials, displaying a substantially reduced activation energy and enthalpy change for MgH2 dehydrogenation.

  • Lithium silicide nanocrystals: synthesis, chemical ...

    Lithium silicide (LixSi) is the lithiated form of silicon, one of the most promising anode materials for the next generation of lithium-ion batteries (LIBs). In contrast to silicon, LixSi has not been well studied. Herein we report a facile high-energy ball-milling-based synthesis of four phase-pure …

  • An outstanding effect of graphite in nano-MgH2–TiH2 on ...

    The TEM study showed that carbon is uniformly distributed between the MgH 2 grains covering segregated TiH 2, preventing the grain growth and thus keeping the reversible storage capacity and the rates of hydrogen charge and discharge unchanged. Modelling of the kinetics of hydrogen absorption and desorption in the Mg–Ti and Mg–Ti–C ...

  • The effects of ball milling and the addition of blended ...

    The effects of ball milling and the addition of blended elemental aluminium on the densification of TiH2 power E. Schumann, Jean-François Silvain, Jean-Louis Bobet, Matthieu Bardet, Yongfeng Lu, Andrei Kotousov, Mélanie Lamirand-Majimel To cite this version: E. Schumann, Jean-François Silvain, Jean-Louis Bobet, Matthieu Bardet, Yongfeng Lu ...

  • Research on Dehydrogenation and Sintering Process of ...

    In this paper, unlike the traditional powder metallurgy technology, the titanium hydride is directly used as the starting material to manufacture the titanium and titanium alloy. Thermogravimetric and dilatometric techniques are performed to study the dehydrogenation and shrinkage of TiH2 powders with different particle sizes. The process factors such as the sintering temperature, the ...

  • Performance and fuel cell applications of reacted ball ...

    The present study aimed to enhance the kinetics behavior and destabilize the thermal stability of MgH2 powder by high-energy milling of Mg powder under 50 bar of H2 for several hours using Ti-balls as the milling media. The results showed a monotonical increase in Ti content worn off the milling media and introduce

  • Theoretical Performance Analysis of Metal Hydride Fuel ...

    Advanced preparation and processing techniques for high energy fuel AlH3. Chemical Engineering Journal, Vol. 421. Variations and Control of Thrust and Mixture Ratio in Hybrid Rocket Motors. ... Study on Ball Milling of TiH2 and Application in Energetic Materials. 1 August 2014 | Applied Mechanics and Materials, Vol. 599-601 ...

  • Effect of Milling Parameters on the Structural ...

    Al2O3-TiO2-graphite nanocomposite can be used as alternative material for coating application. Fine composite coating particles is commonly produced by milling in a high energy ball milling. This study focused on evaluate the effects on the structural, microstructural and physical properties of Al2O3-TiO2-graphite nanocomposite. The alumina, titania and graphite powder were milled in a ...

  • Hydrogen storage properties of nanostructured MgH2/TiH2 ...

    Recently, a significant reduction of the reaction enthalpy was reported in a study of a MgH 2-0.1TiH 2 composite, prepared by ultrahigh-energy-high-pressure ball milling . The calculated reaction enthalpy is 68.2 kJ mol −1 ·H 2, which is much smaller than …

  • Gas Release Behavior of Cu-TiH2 Composite Powder and Its ...

    Compared to traditional pore structure with high porosity (≥ 80 pct) and large pore size (≥ 3 mm), aluminum s with low porosity (60 to 70 pct) and small pore size (≤ 2 mm) possess higher compressive property and formability. In order to achieve the goal of reducing pore size, Cu-TiH2 composite powder prepared by ball milling preoxidized TiH2 with Cu powder was used as a blowing …

  • Materials Science Forum Vols. 498-499 | p. 3 | Scientific.Net

    In the present study, alloy powders containing 60 wt-% Nb were prepared by high-energy milling of Nb, Ti, and/or TiH2 powders. The high-energy milling process was carried out in a planetary ball mill. The starting and as-milled materials were characterized by X-ray diffraction (XRD), and scanning electron microscopy (SEM). Elemental (Nb, and Ti ...

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    A study on Characterist of TiH2-Al-Nb Alloyed Powder During High-Energy Ball Mill, Materials Science Forum, 688:1-5, 2011 (20112814127502) 8.Chen hua,Men Hong-zhi,Kang kai.Influence of mechanical alloying on microstructure of sintered TiAl-based alloys.Transactions of Materials and Heat Treatment.31:49-53,2010(20102913085612) 9.Chen hua,Li yue ...

  • Materials Science Forum Vols. 534-536 | p. 6 | Scientific.Net

    Abstract: Lithium is one of the active metals and reacts with nitrogen even at room temperature. In this study, in order to grind and activate Li, the mechanical milling of Li with stable metal oxide, namely, Al2O3 and MgO, using a high energy vibrating ball mill was performed. In the case of Li- MgO system, it reacts with N2, but hardly reacts ...

  • Preparation of Nb-40Ti Powders by High-Energy Milling ...

    Porous Ti-Nb alloys are promising candidates for biomedical applications. In the present study, alloy powders containing 60 wt-% Nb were prepared by high-energy milling of Nb, Ti, and/or TiH2 powders. The high-energy milling process was carried out in a planetary ball mill. The starting and as-milled materials were characterized by X-ray diffraction (XRD), and scanning electron microscopy (SEM).

  • Rapid consolidation of nanostructured Ti from mechanically ...

    Dense nanostructured Ti was sintered from mechanically activated Ti and TiH2 powders by pulsed-current activated heating under a pressure of 80 Mpa. TiH2 powder was decomposed to Ti during sintering. The hardness of the Ti increased, and the average grain size of the Ti decreased, with increasing milling time.

  • study on ball milling of tih2 and application in

    Study on Ball Milling of TiH2 and Application in Energetic Particle distribution of titanium hydride (TiH2) during the ball mill process was studied by milling it with different time. Scanning electron microscope (SEM) pictures showed that particle size decreased quickly at the initial stage, and homogeneous, super fine TiH2 powder was obtained ...

  • Study on Ball Milling of TiH2 and Application in Energetic ...

    Particle distribution of titanium hydride (TiH2) during the ball mill process was studied by milling it with different time. Scanning electron microscope (SEM) pictures showed that particle size decreased quickly at the initial stage, and homogeneous, super fine TiH2 powder was obtained after 4 h mill. Application of TiH2 in energetic materials was investigated by preparation of TiH2/RDX ...