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Magnetic properties of TbFe2 particles prepared by,

Oct 01, 2013· Sintered Nd–Fe–B magnets were fixed around the milling bowl to carry out magnetic field assisted ball milling. The magnetic field generated at the center of milling bowl was found to be around 400 Oe. Surfactant assisted ball milling was carried out using oleic acid as surfactant and toluene as milling medium.(PDF) Multiwalled Carbon Nanotube-Coated SmCo5/Fe Magnetic,,Magnetic Field-Assisted Ball Milling Padmanapan Sarav anan ∗ , Partha Ghosal, and V enkatasubramanian Chandrasekaran Defence Metallurgical Research Laboratory ,SmCo5/Fe nanocomposite magnetic powders processed by,,A magnetic field-assisted ball milling has been employed for the preparation of SmCo 5 + 10wt% 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

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,(PDF) SmCo5/Fe nanocomposite magnetic powders processed 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,Synthesis of FeCoNiCuZn single-phase high-entropy alloy by,,Mar 15, 2020· The experiment was conducted using a high-frequency electromagnetic-field-assisted stirring ball milling device designed by the author, as shown in Fig. 1. Download : Download high-res image (54KB) Download : Download full-size image; Fig. 1. High-frequency electromagnetic-field-assisted stirring ball milling device.

SmCo 5 /Fe nanocomposite magnetic powders processed by,

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 and magnetic properties using SEM, XRD, VSM and,The magnetic properties of MMCo5 (MM=Mischmetal,,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.(PDF) SmCo 5 /Fe nanocomposite magnetic powders processed,,SmCo 5 /Fe nanocomposite magnetic powders processed by magnetic field-assisted ball milling with and without surfactant

Characterization and Magnetic Behavior of Fe and Nd−Fe−B,

Evolution of Nd2Fe14B nanoparticles magnetism during surfactant-assisted ball-milling. Intermetallics 2011, 19 (4) , 589-595. DOI: 10.1016/j.intermet.2010.12.012. A M Gabay, N G Akdogan, M Marinescu, J F Liu, G C Hadjipanayis. Rare earth–cobalt hard magnetic nanoparticles and nanoflakes by high-energy milling.Magnetic nanoparticles produced by surfactant-assisted,,Apr 24, 2006· 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, andSm--Co hard magnetic nanoparticles prepared by surfactant,,We have adopted a surfactant-assisted ball milling method to produce magnetic nanoparticles of variouscompositions[14]. However,widesizedistributionand particle contamination are still two major barriers en route for further applications of ball-milled magnetic nanoparticles. For instance, a ball-milled nanoparticle powder with average size

US20150104645A1 - Magnetic nanoflakes - Google Patents

Magnetic nanoflakes fabricated by surfactant assisted, wet, high energy ball milling of bulk precursors, with or without preceding dry, high energy ball milling, wherein certain nanoflakes indicate hard magnetic properties, crystallographic texture and magnetic anisotropy.Magnetic properties of TbFe 2 particles prepared by,,The alloy of TbFe 2 was studied by ball milling with and without the presence of external magnetic field. While the structure and powder morphology of the alloy were investigated using scanning electron microscope and X-ray diffraction, the magnetization was investigated using vibrating sample and superconducting quantum interference device magnetometers.Magnetic Evolution of PrCo5 Nanoflakes Obtained by,,In this work, PrCo 5 nanoflakes were obtained by a top-down approach using surfactant-assisted high-energy ball mill (SABM) technique. The coarse alloy powders were subjected to SABM employing oleic acid as surfactant and heptane as milling medium. The surfactant led to the dispersion of the crashed particles by suppressing the effects of re-welding and agglomeration during milling.

Anisotropic hard magnetic nanoparticles and nanoflakes,

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 2015A Comparative Performance of Oleic Acid and MWNT-Coated,,Mar 17, 2013· 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-coatedA structural investigation of SmCo5/Fe nanostructured,,powders processed by magnetic field-assisted ball milling P Saravanan, R Gopalan, N V Rama Rao et al.-The magnetoresistive properties of Cu Sm Co Fe ribbons R Lardé, J M Le Breton, F Richomme et al.-Recent citations Exchange-Coupling Behavior in SrFe12O19/La0.7Sr0.3MnO3 Nanocomposites Jiba Nath Dahal et al-Influence of high anisotropy phase on,

Strong textured SmCo 5 nanoflakes with ultrahigh,

Aug 14, 2015· The high coercivity of 26.2 kOe for SmCo5 nanoflakes are obtained by multistep (three steps) surfactant-assisted ball milling. The magneticMAIC | Magnetically Assisted Impact Coating | AVEKA,MAIC, pronounced “mace,” is a patented process used to coat smaller particles onto larger particles or to apply small amounts of liquids onto particles. The system relies on a pounding process in which small magnets in an oscillating magnetic field are fluidized to rapidly force theUltrathin SmCo5 nanoflakes with high-coercivity prepared,,Surfactant-assisted ball milling (SABM) is also used for preparing the rare-earth based hard magnetic nanomaterials 6,8. Unfortunately, most of the experiment results exhibit the large thickness and wide size distribution 8 , 9 , 10 , although the further centrifugal separation can be used obtain smaller size 6 , both the low output and low,

(PDF) SmCo 5 /Fe nanocomposite magnetic powders processed,

SmCo 5 /Fe nanocomposite magnetic powders processed by magnetic field-assisted ball milling with and without surfactantSmCo 5 /Fe nanocomposite magnetic powders processed by,,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 and magnetic properties using SEM, XRD, VSM and,Magnetic nanoparticles produced by surfactant-assisted,,Apr 24, 2006· 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

Anisotropic nanostructured magnets by magnetic-field,

Apr 15, 2010· Structural and magnetic characterizations show the alignment of the c-axis of the SmCo 5 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 milling.Magnetic field-assisted finishing - Wikipedia,Magnetic field-assisted finishing, sometimes called magnetic abrasive finishing, is a surface finishing technique in which a magnetic field is used to force abrasive particles against the target surface. As such, finishing of conventionally inaccessible surfaces (e.g., the inside surface of a long curved pipe) is possible. Magnetic field-assisted finishing (MAF) processes have been developed,Fabrication of superparamagnetic and ferromagnetic,,Novel preparation techniques, including salt-matrix annealing, surfactant-assisted ball milling and magnetic field milling have been adopted in this study. The FePt nanocrystals, with a variety of morphologies, including nanowires, nanorods, spherical nanoparticles, nanocubes, and nanosized multi-pods, were synthesized by a polyol reduction,

Synthesis and magnetic properties of ε-Fe2O3 by ball,

Oct 15, 2020· A novel method for synthesizing ε-Fe 2 O 3 nanoparticles was proposed. The ε-Fe 2 O 3 nanoparticles were prepared by ball milling of Iron(III) nitrate nonahydrate and hydrophilic vapor phase nano-silica and post annealing. The structure, morphology and magnetic properties of the prepared nanoparticles were studied by X-ray diffraction, Raman spectroscopy, transmission electronMagnetic field assisted micro electro-discharge machining,,Aug 09, 2004· Implementing magnetic force perpendicular to the electrode's rotational force produces a resultant force that is efficient in transporting debris out of the hole during machining. With the magnetic field assisted micro EDM process a hole depth of 1177 µm is achieved in 360 min in tool steel.A Comparative Performance of Oleic Acid and MWNT-Coated,,Mar 17, 2013· 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

AN ANALYSIS OF POLISHING FORCES IN MAGNETIC FIELD

In magnetic field assisted finishing (MAF) a magnetic field,entire assembly mounted on the table ofwas a CNC milling machine. The magnet was held in the spindle using a custom holder. The force data was recorded at 300 Hz using a NI data acquisition system and processed in LabView.Rare earth–cobalt hard magnetic nanoparticles and,,Mar 30, 2010· High-energy ball milling has been shown to be a promising method for large-scale fabrication of rare earth–transition metal nanoparticles. In this work, we report crystallographically anisotropic SmCo 5, PrCo 5 and Sm 2 (Co, Fe) 17 nanoparticles (particle size smaller than 10 nm) obtained by surfactant-assisted ball milling and study their size and properties as a function of the milling,Analysis of the Magnetocaloric Effect in Powder Samples,,May 12, 2015· where μ 0 is the magnetic permeability of vacuum, T is the temperature, c p is the specific heat, M is the magnetization, and H is the magnetic field which changes between a minimum, H min, and a maximum, H max, values.In most cases, H min = 0 and in the following this case will be considered. The rising of scientific interest in MCE at room temperature coincides with the discovery

Abstract - AIMS Press - Open Access Journals

Poudyal N, Rong CB, Liu JP (2011) Morphological and magnetic characterization of Fe, Co, and FeCo nanoplates and nanoparticles prepared by surfactants-assisted ball milling. J Appl Phys 109: 07B526. 17. Poudyal N, Nguyen VV, Rong CB, et al. (2011) Anisotropic bonded magnets fabricated via surfactant-assisted ball milling and magnetic-field,The Incredible Pull of Nanocomposite Magnets,Such surfactant-assisted ball milling can produce magnetic particles that are only a few nanometers across.,Mixing the two kinds of particles in a liquid in the presence of a magnetic field,,