magnetic hardening of smfe sub 10 v sub 2 by melt

magnetic hardening of smfe sub 10 v sub 2 by melt

(PDF) Magnetic hardening in nanograin Sm-Co 2:17 magnets

The low coercivity obtained in the melt-spun ribbon with z=12 is due to:(i) the formation of Th <sub>2</sub> Ni <sub>17</sub> type low anisotropy phase, (ii) the presence of boron-rich soft

(PDF) Magnetic hardening of Zr<sub>2</sub>Co<sub>11</sub

The optimal magnetic properties of Br=5.2 kG, iHc=4.5 kOe, and (BH)max=5.3 MGOe were obtained in Co80Zr17Si1B2 ribbons, which possessed Co5Zr and minor fcc-Co phases with much finer grain size (10 (PDF) Magnetic hardening of meltspun nanocomposite Magnetic hardening of melt-spun nanocomposite Nd 2 Fe 14 B/Fe magnets I. Panagiotopoulos, L. Withanawasam, A. S. Murthy, and G. C. Hadjipanayis Department of Physics and Astronomy ,

Characterization and Magnetic Behavior of Fe and NdFeB

Nanoparticles of Fe and NdFeB 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. It was confirmed Coercivity mechanism in SmFeTi rare-earth magnets (Journal Melt-spun SmFe{sub 10}Ti consist of two phases; the hard magnetic SmFe{sub 11}Ti phase (1:12), with the ThMn{sub 12} structure, and {alpha}-Fe. The origin of the Fe formation and its influence on the magnetic behavior are discussed. The measured temperature dependence of the coercivity is analyzed in terms of nucleation and pinning mechanisms.

Coercivity mechanism in SmFeTi rare-earth magnets (Journal

Melt-spun SmFe{sub 10}Ti consist of two phases; the hard magnetic SmFe{sub 11}Ti phase (1:12), with the ThMn{sub 12} structure, and {alpha}-Fe. The origin of the Fe formation and its influence on the magnetic behavior are discussed. The measured temperature dependence of the coercivity is analyzed in terms of nucleation and pinning mechanisms. Effect of annealing on nanostructure and magnetic Single-phase Zr 2 Co 11 nanomagnetic materials with high coercivity have been fabricated by melt spinning with subsequent annealing under Ar, N 2, and vaccum.Annealing coarsens the grains and decreases the density of defects, leading to intergrain decoupling action and the enhancement of the magnetocrystalline anisotropy field of the hard magnetic phase.

Effect of annealing on the structure and electrophysical

The behavior of the electrophysical properties in annealing of alloy Bi<SUB>0.85</SUB>Sb<SUB>0.15</SUB>-0.8 at.% Ga obtained by rapid hardening from melt is studied. Temperature dependences of the kinetic coefficients determining the electrophysical properties of the alloy after annealing at different temperatures are plotted. The structural changes in rapidly Effect of boron additions on phase formation and magnetic Aug 15, 2016 · The magnetic properties of as-annealed SmFe 12 B 1.0 melt spun ribbons with an energy product of 2.19MGOe, a coercivity of 2.36 kOe and a remanence of 4.8 kGs have been achieved. The microstructural characteristics of as-annealed melt spun SmFe 12 and SmFe 12 B 1.0 ribbons have been discussed as well.

Effect of boron additions on phase formation and magnetic

Aug 15, 2016 · The magnetic properties of as-annealed SmFe 12 B 1.0 melt spun ribbons with an energy product of 2.19MGOe, a coercivity of 2.36 kOe and a remanence of 4.8 kGs have been achieved. The microstructural characteristics of as-annealed melt spun SmFe 12 and SmFe 12 B 1.0 ribbons have been discussed as well. Effect of boron additions on phase formation and magnetic The magnetic properties of as-annealed SmFe 12 B 1.0 melt spun ribbons with an energy product of 2.19MGOe, a coercivity of 2.36 kOe and a remanence of 4.8 kGs have been achieved. The microstructural characteristics of as-annealed melt spun SmFe<SUB>12</SUB> and SmFe<SUB>12</SUB>B<SUB>1.0</SUB> ribbons have been discussed as well.

Evolution of structural and magnetic properties in LaxCe2

Effects of a TiC addition on microstructure and magnetic properties in [MRE{sub 2.2}Fe{sub 14}B]{sub (100-2x)/17.2}+Ti{sub x}C{sub x}(MRE=Nd+Y+Dy,x=1-5) ribbons, melt spun at a wheel speed of 16 m/s, were systematically studied. X-ray diffraction and differential thermal analysis data revealed that the addition of TiC improves the glass H. Nakamura's research works Tohoku University, Sendai H. Nakamura's 29 research works with 420 citations and 328 reads, including:Microwave Absorption Properties of Zn2-W Type Ferrite

H. Nakamura's research works Tohoku University, Sendai

H. Nakamura's 29 research works with 423 citations and 328 reads, including:Magnetic Properties of Ga-Added Nd-Fe-B HDDR Powders Hard magnetic properties of melt-spun (Fe 0.55Pt 0.45)-(Nb The effects of the melt temperature on the magnetic properties of the nanocrystalline Fe[sub 73.5]Cu[sub 1]Nb[sub 3](Si[sub 0.6]B[sub 0.4])[sub 22.5]

High coercivity in melt-spun SmFe/sub 10/(Ti,M)/sub 2

Magnetic properties of SmFe/sub 10/ (Ti,M)/sub 2/ melt-spun ribbons were studied, where M is V, Cr, Mn, and Mo. The ribbons (M=V/Cr/Mo) quenched at 20 m/s exhibit the high coercivities of 4.2-5.5 kOe. Annealing the ribbons quenched at 40 m/s enhances their coercivities in the range of 5.9-10.0 kOe. Magnetic Properties and Microstructure of Melt-Spun CeFe A series of Ce x Fe bal B 6 (x = 12, 14, 17, 19, and 23 wt%) ternary ribbons was prepared by melt-spinning. Magnetic properties and the microstructure of the Ce-Fe-B ribbons with different Ce contents were investigated. The X-ray diffraction results indicated that multiphase coexisted in the as-spun Ce-Fe-B ribbons, which contained Ce<sub>2</sub>Fe<sub>17</sub>, CeFe<sub>2</sub>, Ce-rich phase

Magnetic anisotropy and magnetostriction of SmFe 2 crystal

May 01, 1999 · SmFe 2 shows a typical cubic anisotropy with anisotropy constants K 1 =5.3×10 6 and K 2 =1.9×10 6 erg/cm 3 at 300 K. Though the easy axis of magnetization is parallel to the [1 1 0] direction at low temperatures, it changes to the [1 1 1] direction at temperatures above 195 K. Magnetostriction constants were determined to be 111 Magnetic hardening mechanism of PrCo 5 -based ribbons The effect of C addition on texture, phase formation, and magnetic properties of PrCo 5 x C x (x = 00.5) ribbons has been examined. C addition does not favor the formation of (200) texture perpendicular to the ribbon plane for the ribbons spun at 5 m s 1.As x increases, the fraction of PrC 2 nonmagnetic phase increases, which enhances the resistance of domain wall movement and thus

Magnetic materials and permanent magnets - Sumitomo

The powders were compacted under a pressure of 2 t/cm 2 and in a magnetic field of 10 kOe, and the resultant compact was sintered at 1090° C. for 1 hour in argon of 2×10-1 Torr. X-ray diffraction has indicated that the major phase of the sintered body is a tetragonal system compound with lattice constants a o =8.85 Å and C o =12.26 Å. Magnetic properties of Sm<sub>5</sub>Fe<sub>17</sub> melt The resultant Sm<sub>5</sub>Fe<sub>17</sub>B<sub>x</sub> (x = 1.0-1.5) melt-spun ribbons still showed a coercivity of around 2 kOe. The annealed Sm<sub>5</sub>Fe<sub>17</sub> melt-spun ribbon exhibited a high coercivity over 25 kOe and a remanence of 40 emu/g, whereas the annealed Sm<sub>5</sub>Fe<sub>17</sub>B<sub>1.0</sub> melt-spun ribbon

Magnetic properties of melt spun and crystallized SmFe 10

Jan 01, 1990 · Among the melt spun and subsequently crystallized alloys with nominal compositions SmFe 10 M 2 with M = Ti, Si and V, the SmFe 10 Ti 2 one exhibits the highest coercivity of 0.57 T. Magnetostrictive composites - General Motors CorporationFIG. 2 is a photomicrograph at 400× magnification of a transverse section of a 1/2-inch disc of SmFe 2 melt-spun ribbon particles (50 vol %) in Fe matrix, hot pressed at 610° C., 95 MPa pressure. FIG. 3 is a graph of magnetostriction 2/3( - ) as a function of applied magnetic field H for hot pressed SmFe 2 /Fe composites made at

Nanocrystalline Sm-based 1:12 magnets Request PDF

Sep 03, 2020 · Magnetic hardening of melt-spun and crystallized SmFe-V and Sm(Fe, Co)-V alloys. Article. confirming that the ribbons are principally comprised of the SmFe<sub>10</sub>V<sub>2</sub> phase. The Novel exchange-coupled SmFe<SUB>3</SUB>/-Fe A new nanocomposite magnet containing exchange-coupled SmFe 3 and -Fe phases has been successfully fabricated via melt spinning followed by magnetic annealing at 450-470 °C for 10 min. These SmFe 3 /-Fe magnets show remarkably high remanent ratio, M r /M s , up to 0.93 and display a smooth single-phase-like loop with excellent rectangularity.

Phase composition and magnetic properties of

As-cast and rapidly quenched alloys (RQAs) SmFe 11 - x Ga x C 1.25 (2 x 5) have been studied. The RQAs were prepared by melt spinning on a steel wheel rotating at a velocity V = 10-40 m/s. Fragments of the RQAs were annealed in a vacuum at T ann = 500-850°C. The as-cast alloys are multiphase; the maximum volume fraction in them corresponds to the Sm<SUB>2</SUB>(Fe, Ga)<SUB>17</SUB>C Samarium alloys - IEEE Conferences, Publications, and Magnetic hardening of SmFe/sub 10/V/sub 2/ by melt-spinning Intrinsic coercivities as large as H/sub ci/=7.8 kOe were obtained in Sm-Fe-V alloys magnetically hardened by melt-spinning. As-quenched Sm/sub 0.87/Fe/sub 10/V/sub 2/ ribbons melt-spun at a substrate velocity of 20 m/s have an intrinsic coercivity H/sub ci/=6.9 kOe and remanence B/sub r/=5.1 kG.

Samsung Black Stainless Electric Cooktop - NZ30K7570RG

Lastly, the 6" melt element on this Samsung electric cooktop is specially suited for melting or warming, by providing steady, precise, low temperatures. The NZ30K7570RG will add a flare of digital luxury to your kitchen your didnt know it was missing. Tailoring of magnetoimpedance effect and magnetic Indeed for I b = 50 mA the current density, j, is estimated as j 300 A/mm 2. Earlier magnetic hardening and/or crystallization of the microwires after annealing with the DC current density, j

ThMn 12 -Type Alloys for Permanent Magnets

The only known R(Fe,M) 12 alloy susceptible to bulk hardening is Sm(Fe,V) 12; it solidifies into a mixture of the -(Fe, V) and SmFe 2 phases and, after controlled crystallization of the SmFe 10 V 2 phase, develops an H c up to 3.7 kOe [39]. We were able to achieve bulk hardening in alloys prepared from Fe, Ti, and an inexpensive mixture of 65 Troubleshooting and Prevention of Cracking in Induction In scan hardening, the inductor or workpiece (or both) can move linearly relative to each other during the hardening cycle [2]. Depending on workflow, the system can be built vertically, horizontally, and at an angle, though vertical-scan hardening is the most popular design for a number of reasons, including a reduced equipment footprint and

Troubleshooting and Prevention of Cracking in Induction

In scan hardening, the inductor or workpiece (or both) can move linearly relative to each other during the hardening cycle [2]. Depending on workflow, the system can be built vertically, horizontally, and at an angle, though vertical-scan hardening is the most popular design for a number of reasons, including a reduced equipment footprint and Magnetic hardening of SmFe/sub 10/V/sub 2/ by melt Sep 01, 1989 · adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A

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