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Sep 01, 2011 TiB 2 /TiC nanocomposite powders were successfully prepared by high-energy ball milling of the powder mixtures of Ti and B 4 C. X-ray diffraction analysis showed that the TiC phase was not produced until the milling time was up to 24 h and only a minimal amount of TiB 2 was generated, even after 48 h of milling. The critical grain size of Ti milled for the reaction between Ti and B 4 C
Dec 01, 2001 TiB 2 /TiC nanocomposite powder was fabricated via high-energy ball milling processing, and microstructure development of the powder mixtures was monitored by X-ray diffraction, transmission electron microscopy. Ball milling B 4 C and elemental Ti powder mixture at ambient temperature resulted in the formation of TiC prior to the formation of TiB 2.The bulk of TiC and TiB 2
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Nanostructured TiC can be obtained by reactive high energy ball milling of titanium and carbon powders. Milling rates of 250 or 320 r.p.m. lead to TiC grains with 0.1–2 μm diameter
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A stainless steel/10wt%TiC nanocomposite particles were prepared by high-energy ball-milling method using stainless steel, carbon and titanium as raw materials. The evolution of phase composition, microstructure and specific surface area of the stainless steel/TiC nanocomposite particles with increasing ball-milling time in the range of 0–100 h were investigated by XRD, SEM, TEM and BET
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Jun 02, 2005 When milling Ti 70 C 30, the reaction to form TiC proceeded gradually as milling progressed. ACKNOWLEDGMENTS The authors wish to thank Dr. Peter Innis from the Intelligent Polymer Research Institute and ARC Centre for Nanostructured Electromaterials at the University of Wollongong for his help and advice with the Raman spectroscopy
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Ball milling is a size reduction technique that uses media in a rotating cylindrical chamber to mill materials to a fine powder. As the chamber rotates, the media is lifted up on the rising side and then cascades down from near the top of the chamber. With this motion, the particles in between the media and chamber walls are reduced in size by
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RETSCH is the world leading manufacturer of laboratory ball mills and offers the perfect product for each application. The High Energy Ball Mill E max and MM 500 were developed for grinding with the highest energy input. The innovative design of both, the mills and the grinding jars, allows for continuous grinding down to the nano range in the shortest amount of time - with only minor warming
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A ball mill, a type of grinder, is a cylindrical device used in grinding (or mixing) materials like ores, chemicals, ceramic raw materials and paints.Ball mills rotate around a horizontal axis, partially filled with the material to be ground plus the grinding medium. Different materials are used as media, including ceramic balls, flint pebbles, and stainless steel balls
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In this paper, the milling parameters of high energy ball mill (Fritsch Pulverisette 7) like vial geometry, number and size of balls and speed of the mill were modelled and discussed. Simulations through discrete element method (DEM) provide correlation between the milling parameters. A mathematical model is used to improve and develop this process
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The chemical composition for the Al 2124 powder and TiC is shown in Table 1. The TiC particle size ranged between 0.85–5 m with an average size of 1.0 m. The refinement process was conducted using a FRITCH high-energy ball milling up to 60 hours at 500 rpm in agate jars with ball-to-powder ratio of
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During reactive ball milling of Ti and C, mechanically induced self-propagating reaction (MSR) synthesis of TiC is reported to occur via a process including initial formation of small amounts of TiC prior to exothermic ignition, followed by MSR and the formation of stiochiometric TiC (Dorofeev et al., 2011; Oghenevweta et al., 2016 [1, 2])
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Sep 28, 2019 In this study, a Ni–TiC composite was synthesized by the carbothermic reduction of activated NiO/TiO2/C powder mixture. The effect of 0-, 2-, 5-, and 10-h ball milling of the sample on the reduction process was investigated. Results of XRD pattern from milled samples showed that no reaction occurred between NiO, TiO2, and carbon due to milling. FESEM images for samples milled for 2, 5
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Ball milling is an efficient way to produce TiC steel bonded carbide. In addition to the use of alloy steel ball, a certain amount of cylindrical object are used for grinding medium and the content is 0, 15%, 30%, 50%, 100% of the total grinding body, respectively. The results show that average size of particles became smaller with an increase of the content of cylindrical grinding medium
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Titanium Aluminide based composites with Al2O3 reinforcement can be produced via reaction of Al with TiO2. These composites are considered as low price materials for high temperature applications. In this research, the effect of ball milling on 3TiO2/7Al system was investigated. On the basis of obtained results, ball milling for 0 to 60 h does not lead to reduction of TiO2 by Al. but reduces
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Oct 28, 2006 Controlled ball milling was performed in a higher energy impact mode and a lower energy shearing mode. For Ti 50 C 50 and Ti 60 C 40 powder mixtures milled in impact mode, TiC was formed via a mechanically-induced self-propagating reaction (MSR)
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Raman spectroscopy as a tool to study TiC formation during controlled ball milling B. H. Lohse, A. Calka,a and D. Wexler Faculty of Engineering, University of Wollongong, Northfields Avenue
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Feb 15, 2021 Amorphous silicon/titanium carbide/graphite (a-Si/TiC/G) composite anodes were successfully prepared by multi-step high-energy ball-milling. x-ray diffraction and high-resolution transmission electron microscopy analyses demonstrated that the Si was completely transformed into an amorphous phase mixed with TiC after prolonged milling
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Nano-TiC and nano-WC anodes for Li-ion battery were manufactured by high-energy ball milling. Pure titanium powder and toluene are mixed with a high-energy ball mill to prepare TiC powder. The powder is calcined at 750 C/1h and secondary ball milled to make a negative electrode for lithium-ion battery
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Leibowitz et al. prepared an SnSb-TiC-C nanocom- posite alloy anode by mechanical milling, and showed that the addition of TiC led to a strongly enhanced cycle performance.27In the present study, simple multi-step high-energy ball-milling methods were used to prepare TiC powders, and Si/TiC and Si/TiC/G composite anodes, and the effects of the ball-milling time on the degree of amorphization of
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Surface composite coatings of Al7075 containing titanium carbide (TiC) particles were fabricated using a hybrid ball milling and gas tungsten inert (TIG) cladding process. Initially, TiC particles were deposited on the surface of Al7075 substrate within ball milling process
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Ball milling technique, using mechanical alloying and mechanical milling approaches were proposed to the word wide in the 8th decade of the last century for preparing a wide spectrum of powder materials and their alloys. In fact, ball milling process is not new and dates back to more than 150 years. It has been used in size comminutions of ore, mineral dressing, preparing talc powders and many
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