magnetic field assisted ball milling

Sm–Co hard magnetic nanoparticles prepared by …

2007-10-12 · The described surfactant-assisted ball milling and size-selection processes are promising for fabrication of nanoparticles of other rare-earth-containing magnetic materials (e.g., Nd 2 Fe 14 B nanoparticles) and can be developed to be a versatile technique of nanoparticle preparation for other materials in general.

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ball milling magnetic composite

A magnetic field-assisted ball milling has been employed for the preparation of SmCo 5 10 wt Fe nanocomposite powders in the presence of oleic acid as surfactant. Milling experiments were also carried out without using surfactant and the nanocomposite powders so obtained with and without surfactant were investigated for their structural .

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A review of magnetic-assisted machining processes ...

Abstract. There has been an increasing interest in the penetration of magnetic field-assisted machining processes in the industries. Due to the ease of contactless forces, magnetic fields have proved extremely versatile and relatively low cost when considering the potential increase in productivity of existing machining processes that it can provide.

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Magnetic Properties of TbFe2 Particles Prepared by ...

A magnetic field-assisted ball milling has been employed for the preparation of SmCo5 + 10 wt% Fe nanocomposite powders in the presence of oleic acid as surfactant. Milling experiments were also ...

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ball milling magnetic

The described surfactant-assisted ball milling and size-selection processes are promising for fabrication of nanoparticles of other rare-earth-containing magnetic materials (e.g. Nd 2 Fe 14 B nanoparticles) and can be developed to be a versatile technique of nanoparticle preparation for other materials in general.

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Dispersion Techniques of Nanoparticles

2016-12-30 · milling and magnetic treatment produced nearly same size particle, while larger particles produced from planetary ball mill method. The magnetic field assisted dispersion technique was the best method in producing uniform particle size [19]. The enhancement of thermal and electrical properties of

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Anisotropic hard magnetic nanoparticles and nanoflakes ...

2016-5-24 · Anisotropic hard magnetic nanoparticles and nanoflakes obtained by surfactant-assisted ball milling DISSERTATION zur Erlangung des akademischen Grades Doktor-Ingenieur (Dr.-Ing.) Vorgelegt der Fakultät Maschinenwesen der Technischen Universität Dresden von Santosh Kumar Pal geboren am 10.07.1985 in Ghatampur, Indien Dresden 2015

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Anisotropic Sm-(Co,Fe) nanoparticles by surfactant ...

T1 - Anisotropic Sm-(Co,Fe) nanoparticles by surfactant-assisted ball milling. AU - Akdogan, Nilay G. AU - Hadjipanayis, George C. AU - Sellmyer, David J. PY - 2009. Y1 - 2009. N2 - Magnetically hard Sm2 (Co0.8 Fe0.2) 17 and SmCo5 nanoparticles have been produced by using surfactant-assisted low- and high-energy ball milling techniques.

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SmCo5/Fe nanocomposite magnetic powders processed …

5/Fe nanocomposite magnetic powders processed by magnetic field-assisted ball milling with and without surfactant P Saravanan, R Gopalan1, N V Rama Rao, M Manivel Raja and V Chandrasekaran Defence Metallurgical Research Laboratory, Kanchanbagh PO, Hyderabad 500 058, India E-mail: rg [email protected] and [email protected]

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Anisotropic PrCo Nanoparticles by Surfactant-Assisted …

Magnetically hard PrCo<sub>5</sub> nanoparticles have been produced by using surfactant-assisted high-energy ball milling techniques. The use of surfactant leads to the dispersion of the crashed particles and prevents them from rewelding during the milling process. Heptane was used as the milling medium, and oleic acid as the surfactant.

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Ball Milling Assisted

Ball milling assisted hydrothermal synthesis of ZrO2. Ball milling assisted hydrothermal runs were performed to understand the effect of mechanical force on phase formation, crystallinity and particle size distribution. Monoclinic ZrO 2 was formed in both milled and non-milled runs when zirconium solution was used. Cited by: 5

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FePt magnetic particles prepared by surfactant …

2013-10-1 · FePt magnetic particles prepared by surfactant-assisted ball milling. Author links open overlay panel V. Velasco a b A. Hernando a b P. Crespo a b. ... FePt particles have been obtained by high-energy ball milling. ... By increasing the reverse field the hard magnetic phase reverses its direction in a completely independent process.

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Magnetic nanoparticles produced by surfactant …

Nanoparticles of Fe, Co, FeCo, SmCo, and NdFeB systems with sizes smaller than 30 nm and narrow size distribution have been successfully prepared by ball milling in the presence of surfactants and organic carrier liquid. It has been observed that the nanoparticles prepared by milling Fe and FeCo powders were close to spherical in their shapes, whereas those of Co, SmCo, and Nd-Fe-B showed ...

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The magnetic properties of MMCo5 (MM=Mischmetal ...

2019-7-4 · The hard magnetic MMCo 5 nanoflakes with high coercivity and narrow size distribution have been successfully obtained by three steps surfactant-assisted ball milling (SABM). The magnetic properties, phase structure and morphology of these MMCo 5 nanoflakes were studied in this work. The coercivity and the remanence ratio of MMCo 5 nanoflakes reached to 5.89 kOe and 0.75, respectively.

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Anisotropic nanostructured magnets by magnetic …

Structural and magnetic characterizations show the alignment of the c-axis of the SmCo5 grains upon the magnetic-field-assisted ball milling, while the grain size was controlled under 15 nm. The formation of the texture may be attributed to the effect of magnetic fields on the grain orientation during the cold welding process during ball ...

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Magnetic Field Assisted Electrical Discharge …

Electric discharge machining (EDM) is a non-conventional machining process in which material removal take place by a series of electric spark generated between the small gap of both electrode and both immersed in dielectric medium. The gap conditions of EDM significntly affect the stability of machining process. Thus, the machining performance would be improved by removing the debris from the ...

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Sm--Co hard magnetic nanoparticles prepared by …

2013-4-8 · Sm–Co hard magnetic nanoparticles prepared by surfactant-assisted ball milling Yiping Wang, Yang Li, Chuanbing Rong and J Ping Liu Department of Physics, The University of Texas at Arlington, Arlington, TX 76019, USA E-mail: [email protected] Received 6 June 2007, in final form 7 September 2007 Published 12 October 2007

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Processing of anisotropic MnBi nanoparticles by …

2015-9-29 · Processing of anisotropic MnBi nanoparticles by surfactant assisted ball milling K. Kanari1, C. Sarafidis1, M. Gjoka2, D. Niarchos2 and O. Kalogirou1 1Dept. of Physics, Aristotle University of Thessaloniki, 54006 Thessaloniki, Greece 2 INN, NCSR Demokritos, Athens 15310, Greece E-mail: [email protected] Nowadays, the field of magnetic applications is dominated by high performance

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alignment of ball mill machine

magnetic field assisted ball milling, while the grain size was controlled under 15 nm. . patterns show c axis alignment in the bulk magnets, which was consistent . The mix ture was ground in a milling vial with balls in a ball milling machine. Ball mill maintenance Prime Machine, Inc.

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FePt magnetic particles prepared by surfactant …

High-energy ball milling of Fe and Pt elemental powders has been carried out under dry and wet (in presence of solvent and surfactants) conditions. Dry milling leads to the formation of the disordered FCC-FePt alloy whereas by the wet milling procedure the main process is the decrease of Fe and Pt particle size, although some dissolution of Pt into Fe grains cannot be ruled out, and no hint of ...

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Characterization and Magnetic Behavior of Fe and …

2019-5-26 · Nanoparticles of Fe and Nd−Fe−B alloy with sizes less than 20 nm have been successfully fabricated by a high-energy ball-milling process in the presence of surfactant and organic carrier liquid. Structural and magnetic property characterization reveals that these nanoparticles consisting of nanosized grains can be used for fabricating anisotropic nanocomposite magnets.

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Magnetic nanoparticles produced by surfactant …

2019-3-19 · Nanoparticles of Fe, Co, FeCo, SmCo, and NdFeB systems with sizes smaller than 30 nm and narrow size distribution have been successfully prepared by ball milling in the presence of surfactants and organic carrier liquid. It has been observed that the nanoparticles prepared by milling Fe and FeCo powders were close to spherical in their shapes, whereas those of Co, SmCo, and Nd–Fe–B showed ...

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Contribution (Poster) CoFe2O4 nanoparticles: ball milling ...

2009-2-18 · 2.1 Ball milling, assisted by NaOH, method: The appropriate amounts of Co(NO 3) 2.6H 2 O, Fe(NO 3) 3.9H 2 O and NaOH, in a 1:2:8 molar ratio respectively, were mixed by ball milling. Milling was performed in a planetary ball mill (Fritsch Pulverissette), the milling time was 4 hours at speed of 300 rpm with a ball-to-powder mass ratio of 10:1.

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MAGNETIC NANOFLAKES

2012-1-26 · Magnetic nanoflakes fabricated by surfactant assisted, wet, high energy ball milling of bulk precursors, wherein the nanoflakes have one or more properties selected from the group consisting of: (a) hard magnetic properties (b) soft magnetic properties (c) crystallographic texture (d) magnetic anisotropy; (e) the nanoflakes arrange themselves ...

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Study on the Magnetic Characteristics of Anisotropic …

texture, magnetic field-assisted ball-milling, and melt-spinning at low wheel speeds have induced texture in Sm-Co alloys either with low degree of texture or with a moderate degree of texture resulting in a non-unidirec-tional easy axis [22-25]. This paper presents the preparation and characterization of SmCo 7-type alloys with out-of-plane ...

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A Comparative Performance of Oleic Acid and MWNT …

Abstract. In the present study, a magnetic field-assisted milling process was adopted for the fabrication of SmCo 5 /Fe nanocomposites using oleic acid (OA) and multi-walled carbon nanotubes (MWNT) as surfactants. The bare SmCo 5 /Fe powders processed by conventional milling consist of large agglomerates accompanied by amorphization; while both the OA and MWNT-coated SmCo 5 /Fe …

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assisted high energy ball mill

Oct 25, 2012 Surfactant-assisted high energy ball milling is another efficient technique to obtain hard magnetic Sm–Co nanoparticles. Chakka et al. have obtained isolated SmCo 5 and Sm 2 Co 7 nanoparticles with low coercivities (<100 Oe) and very low remanence ratio get price.

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Magnetic properties of TbFe2 particles prepared by ...

2013-10-1 · The powder particle size as a function of milling time was examined under scanning electron microscope. The morphology of the powder milled for 20 h with and without the influence of magnetic field is shown in Fig. 2a and b, which indicates that the particle size varies from 5 to 20 μm for the powder milled without field and it ranges from 0.1 to 3 μm for field assisted milling.

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中国科学院物理研究所 磁学国家实验室 M03 组

2020-9-1 · The magnetic properties of MMCo 5 (MM=Mischmetal) nanoflakes prepared by multistep (three steps) surfactant-assisted ball milling AIP Advances 8 (2018) 056211 40 J. Zhang, X. Yan, F. R. Han, J. E. Zhang, D. Liu, B. G. Shen, and J. R. Sun In-plane 3 /La

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