Magnetic Field Assisted Ball Milling

Magnetic properties of TbFe2 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 Xray diffraction, the magnetization was investigated using vibrating sample and superconducting quantum interference device magnetometers.

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(PDF) SmCo 5 /Fe nanocomposite magnetic powders processed

SmCo 5 /Fe nanocomposite magnetic powders processed by magnetic fieldassisted ball milling with and without surfactant

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Abstract Harvard University

Abstract Magnetically hard Sm2(Co0.8Fe0.2)17 and SmCo5 nanoparticles have been produced by using surfactantassisted low and highenergy ball milling techniques. Surfactants prevent the rewelding of the crashed particles during the milling process. Heptane was used as the milling medium and oleic acid as the surfactant.

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Anisotropic Sm(Co,Fe) nanoparticles by surfactant

title = "Anisotropic Sm(Co,Fe) nanoparticles by surfactantassisted ball milling" abstract = "Magnetically hard Sm2 (Co0.8 Fe0.2) 17 and SmCo5 nanoparticles have been produced by using surfactantassisted low and highenergy ball milling techniques.

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P Saravanan Google Scholar Citations

Their combined citations are counted only for the first article. Merged citations. SmCo5/Fe nanocomposite magnetic powders processed by magnetic fieldassisted ball milling with and without surfactant. P Saravanan, R Gopalan, NVR Rao, MM Raja, V Chandrasekaran.

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Structure and sizedependent properties of NdFeB

from milling of HDDR powder S K Pal, K Güth, T G Woodcock et al.Anisotropic bonded magnets fabried via surfactantassisted ball milling and magneticfield processing Narayan Poudyal, Van Vuong Nguyen, Chuanbing Rong et al.Recent citations Microstructure, improved magnetic properties, and recoil loops characteristics for MnBi alloys Y.L

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CiteSeerX — JOURNAL OF PHYSICS D: APPLIED PHYSICS

CiteSeerX Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Anisotropic bonded magnets fabried via surfactantassisted ball milling and magneticfield processing This article has been downloaded from IOPscience. Please scroll down to see the full text article.

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Ball Milling method for synthesis of nanomaterials

Jun 15, 2012 · Steps in ball milling method 1. As the name suggests, the ball milling method consists of balls and a mill chamber. Therefore over all a ball mill contains a stainless steel container and many small iron, hardened steel, silicon carbide, or tungsten carbide balls are made to rotate inside a mill

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Effects of Ultrasonic Vibration and Magnetic Field in

Microelectric discharge milling (μEDM milling) is one of the micromachining processes which draw the attention of researchers in fabriing microcavities and microchannels. Improving the efficiency of this process remains challenging. There are publiions that report the benefits of applying ultrasonic vibration to tool or workpiece and using magnetic fields to enhance debris removal.

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"Control and manipulation of nanoparticles for fabriion

The ball milling was used to control the dispersion as well as the cluster size of the graphene within the matrix. The effect of ball milling time on the fabried composites was studied. Magnetic field assisted deposition was studied to manipulate and deposit nanoparticles into micropatterns that can be used to create hierarchically

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Anisotropic nanostructured magnets by magneticfield

Apr 15, 2010 · Structural and magnetic characterizations show the alignment of the caxis of the SmCo 5 grains upon the magneticfieldassisted 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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List of manufacturing processes Wikipedia

This section does not cite any sources. Please help improve this section by adding citations to reliable sources.Unsourced material may be challenged and removed. (December 2009) (Learn how and when to remove this template message)This tree lists various manufacturing processes arranged by similarity of

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Electromagnetic Force Fields VS. Magnetic Cannonball

Feb 28, 2018 · This video tests a question: can induced magnetic fields in copper stop a magnetic bullet? Get a free audiobook through my sponsor Audible by signing up for

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Raghavan Gopalan Google Scholar Citations

This "Cited by" count includes citations to the following articles in Scholar. The ones marked * may be different from the article in the profile.

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Anisotropic bonded magnets fabried via surfactant

Abstract Anisotropic bonded magnets are fabried by surfactantassisted ball milling in a magnetic field and magnetic field alignment of the milled chiplike nanoparticles of

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Anisotropic Sm(Co,Fe) nanoparticles by surfactant

Magnetically hard Sm2(Co0.8Fe0.2)17 and SmCo5 nanoparticles have been produced by using surfactantassisted low and highenergy ball milling techniques. Surfactants prevent the rewelding of the crashed particles during the milling process. Heptane was used as the milling medium and oleic acid as the surfactant. Highenergy ball milling experiments took place in a milling vial with carbon

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Permanent Magnet Nanoflakes Iasi SlideShare

Sep 03, 2011 · Flakes of malleable metals and alloys like Ni, Cu, FeCo, FeCoZr, FeSiAl, SnAgCu, have been fabried by surfactantassisted ball milling. 6. However, SmCo5 and Nd2Fe14B magnetic materials are brittle in nature and, therefore, they are not expected to "flake" during ball milling. 7.

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Microstructure and magnetic properties of MnBi alloys with

In this work, using annealed ribbons as precursors, through SABM technique, followed by alignment in magnetic field, we have successfully obtained anisotropic MnBi magnets with excellent magnetic properties. The ball milling processing and the relation to microstructure and magnetic properties were investigated in detail, and the coercivity

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A Comparative Performance of Oleic Acid and SpringerLink

Mar 17, 2013 · Abstract. In the present study, a magnetic fieldassisted milling process was adopted for the fabriion of SmCo 5 /Fe nanocomposites using oleic acid (OA) and multiwalled 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 MWNTcoated

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Magnetic properties of TbFe2 particles prepared by

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

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Magnetic Field Assisted Machining

an effort to prolong tool life, magnetic field assisted machining can be applied, in particular when tool vibration or chatter is the cause for the rapid tool wear. This paper summarizes magnetic field assisted machining processes, including drilling, milling, and turning. The effect of magnetic field use in combination with other machining

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(PDF) Anisotropic Bonded Magnets Fabried via Surfactant

Anisotropic bonded magnets are fabried by surfactantassisted ball milling in a magnetic field and magnetic field alignment of the milled chiplike nanoparticles of the Sm–Co and Nd–Fe–B

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Structure and Properties Evolutions for Hard Magnetic

Structure and Properties Evolutions for Hard Magnetic MnAl and MnGa Based Alloys fabried by surfactant assisted ball milling using alloy ingot Kunpeng Su, Yitian Cheng, and Raju V Ramanujan (2015) Structure and Properties Evolutions for Hard Magnetic MnAl and MnGa Based Alloys Prepared by Melt Spinning or Mechanical Milling. Mater.

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Mechanical milling assisted by electrical discharge Nature

Sep 12, 2002 · Figure 1: Schematic illustrations of magnetoball milling and electricdischargeassisted mills. a, Conventional milling under external magnetic field. External magnets control ball motion

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Improved efficiency for preparing hard magnetic Sm2Fe17NX

The plasma assisted ball milling technology is employed for the preparation of hard magnetic Sm 2 Fe 17 N X magnetic powders for the first time. Using conventional highenergy ball milling, Sm 2 Fe 17 alloy powders can only be prepared from Sm 2 Fe 17 alloy precursor but not from Sm and Fe metal precursor. However, by the plasmaassisted ball milling, Sm 2 Fe 17 alloy powders with very fine

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Nonequilibrium Cation Distribution, Canted Spin

A singlestep synthesis of magnesium ferrite (MgFe2O4) nanoparticles with an average crystallite size of about 8.5 nm synthesized via mechanochemical processing of binary oxide precursors at room temperature is reported. The study highlights the nature of the ion disorder and of the spin arrangement in mechanosynthesized MgFe2O4 as well as its response to changes in temperature.

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Abstract Harvard University

The cast alloy was melt spun and ball milled (with and without magnetic field) to impart microstructural refinement and correlated with the development of coercivity. Coercivity as high as 6500 Oe obtained during magnetic field assisted ball milling due to fine particle size, alignment of particles and strain.

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Anisotropic nanostructured magnets by magneticfield

The work involved synthesis of nanocrystalline hard magnetic SmCo5 particles by ball milling in the presence of a magnetic field. Structural and magnetic characterizations show the alignment of the caxis of the SmCo5 grains upon the magneticfieldassisted ball milling, while the grain size was controlled under 15 nm.

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Anisotropic Sm2Co17 nanoflakes produced by surfactant and

Anisotropic Sm 2 Co 17 flakes with high aspect ratio were prepared by magnetic field assisted high energy ball milling in the presence of heptane and oleic acid (OA). The thickness of flakes was only tens of nanometers. Coercivity of 3 kOe was achieved in the nanoflakes. Most interestingly, the magnetic crystalline anisotropy of Sm 2 Co 17 flakes was improved compared to that of particles

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Magnetic Properties of TbFe2 Particles Prepared by

Structural and magnetic characterizations show the alignment of the caxis of the SmCo <sub>5</sub> grains upon the magneticfieldassisted ball milling, while the grain size was controlled under

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Scientist ''G'' and Head, Centre for Automotive Energy

26. "Study on morphology and magnetic behavior of SmCo5 and SmCo5/Fe nanoparticles synthesized by surfactantassisted ball milling." P. Saravanan, M. Premkumar,, AK Singh, R Gopalan and V Chandrasekaran, J. Alloys and Compd. 480 (2009) 645 27. "Effect of sintering temperature on the structure and magnetic properties of SmCo5/Fe

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Anisotropic SmCo5/FeCo core/shell nanocomposite chips

prepared by surfactantassisted ball milling then coated with soft magnetic FeCo using cobalt sulfate (CoSO4.7H2O) and iron sulfate (FeSO4.7H2O) as metal precursors in presence of complexing agents. The influence of the softphase coating on the magnetic properties of the

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Preparation of Nanoscale Sm2Co17 Flakes by Ball Milling in

Preparation of Nanoscale Sm2Co17 Flakes by Ball Milling in Magnetic Field Article in Journal of Iron and Steel Research International 21(5):517–520 · May 2014 with 9 Reads How we measure ''reads''

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Magnetic properties of ballmilled SrFe12O19 particles

The roomtemperature magnetic properties of ballmilled strontium hexaferrite particles consolidated by sparkplasma sintering are strongly influenced by the milling time. Scanning electron microscopy revealed the ballmilled SrFe 12 O 19 particles to have sizes varying over several hundred nanometers. XRay powderdiffraction studies performed

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Ball mill Wikipedia

The ball mill is a key piece of equipment for grinding crushed materials, and it is widely used in production lines for powders such as cement, silies, refractory material, fertilizer, glass ceramics, etc. as well as for ore dressing of both ferrous and nonferrous metals. The ball mill can grind various ores and other materials either wet

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Nanostructured Magnetic Materials Group

N anoparticles of Fe, Co, FeCo, SmCo and NdFeB systems with sizes smaller than 30 nm and narrow size distribution have been successfully prepared by surfactantassisted ball milling, which opens a new approach to obtain monodisperse magnetic nanoparticles.

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