Nanocrystalline soft magnetic Fe-M-B (M = Zr, Hf, Nb) alloys "NANOPERM" with high magnetic induction

1998 ◽  
Vol 08 (PR2) ◽  
pp. Pr2-103-Pr2-106 ◽  
Author(s):  
A. Makino ◽  
T. Bitoh ◽  
J.-I. Murakami ◽  
T. Hatanai ◽  
A. Inoue ◽  
...  
Keyword(s):  
Magnetic Induction ◽  
Soft Magnetic ◽  
High Magnetic Induction

scholarly journals Study on the Soft Magnetic Properties of FeSiB/EP Composites by Direct Ink Writing

2021 ◽  
Vol 8 ◽  
Author(s):  
Ma Qing ◽  
Teng Chong ◽  
Hu Jing ◽  
Baoan Sun
Keyword(s):  
Mechanical Properties ◽  
Magnetic Properties ◽  
Amorphous Alloy ◽  
Epoxy Resin ◽  
Magnetic Induction ◽  
Mass Fraction ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Direct Ink Writing ◽  
Microscopic Morphology

Fe-based amorphous alloy has excellent soft magnetic properties; traditionally, Fe-based amorphous alloy such as soft magnetic devices was fabricated by insulation enveloping and suppression molding methods. In this process, the aging of organic envelope materials and the crystallization of Fe-based amorphous alloy were usually occurring, accompanying with low magnetic induction and poor mechanical properties. The direct ink writing (DIW) technique can make complex-shaped parts and needs no heating treatment after forming, which can avoid the effect of traditional molding process. In the present study, varying mass fraction FeSiB/EP composite parts were prepared by the DIW technique with the Fe-based amorphous alloy powder and epoxy resin, in which microscopic morphology, magnetic properties, and mechanical properties of FeSiB/EP soft magnetic composites were studied. The results indicate that the slurry with iron powder mass fraction of 92.3, 92.6, and 92.8 wt% has good printing performance and self-support ability, which is suitable for DIW. The density of the printed parts is about 4.317, 4.449, and 4.537 g/cm3, which is almost similar with the iron powder. The tensile strength and elongation of printing parts are significantly improved compared with the pure epoxy resin. From the photos of microscopic morphology of printing parts, it can be seen that FeSiB powders are evenly dispersed in EP, no pores, and defects, with the proportion increasing of powders; the insulation coating thickness decreases; and the magnetic performance improves. The optimal sample is 92.8 wt% FeSiB/EP, in which saturation magnetic induction strength is 137.9759 emu/g and coercivity is 4.6523 A/m.

scholarly journals PRECISION DOUBLET OF MAGNETIC QUADRUPOLE LENSES FOR ION BEAM FORMATION

2020 ◽  
pp. 45-48
Author(s):  
A.G. Ponomarev ◽  
V.A. Rebrov ◽  
S.V. Kolinko ◽  
V.F. Salivon
Keyword(s):  
Magnetic Induction ◽  
Ion Beam ◽  
Reconstruction Technique ◽  
Soft Magnetic ◽  
Field Reconstruction ◽  
Single Piece ◽  
Magnetic Quadrupole ◽  
Beam Formation ◽  
Multipole Field ◽  
Quadrupole Lenses

The precision doublet of magnetic quadrupole lenses is presented. The doublet yoke and poles made from a single piece of soft magnetic iron. Doublet manufacturing technology provides of alignment of the geometric axes in the lenses with an accuracy of a few microns. The doublet geometry was chosen to obtain the maximum magnetic induction at the poles for a given radius of the lens aperture as a result of numerical simulation. An experimental study of the doublet properties was carried out using a setup for field reconstruction technique for magnetic quadrupole lenses. The relative position of the physical axes of the lenses (the geometrical location of points with zero magnetic induction) and the magnitudes of the parasitic multipole field components were determined.

Solidification Structure and Segregation of High Magnetic Induction Grain-Oriented Silicon Steel

2019 ◽  
Vol 25 (6) ◽  
pp. 1586-1592
Author(s):  
Xin Li ◽  
Min Wang ◽  
YanPing Bao ◽  
Jian Gong ◽  
Xianhui Wang ◽  
...  
Keyword(s):  
Magnetic Induction ◽  
Silicon Steel ◽  
Solidification Structure ◽  
High Magnetic Induction

scholarly journals Rayleigh-Bénard Convection of Paramagnetic Liquid under a Magnetic Field from Permanent Magnets

Symmetry ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 341
Author(s):  
Kengo Wada ◽  
Masayuki Kaneda ◽  
Kazuhiko Suga
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Magnetic Induction ◽  
Magnetic Force ◽  
Permanent Magnets ◽  
Cell Pattern ◽  
Benard Convection ◽  
Rayleigh Benard Convection ◽  
Rayleigh Benard ◽  
High Magnetic Induction

The convection control is important in terms of the heat transfer enhancement and improvement of the applied devices and resultant products. In this study, the convection control by a magnetic field from block permanent magnets is numerically investigated on the Rayleigh-Bénard convection of paramagnetic fluid. To enhance the magnetic force from the available permanent magnets, pairs of alternating-pole magnets are employed and aligned near the bottom heated wall. The lattice Boltzmann method is employed for the computation of the heat and fluid flow with the consideration of buoyancy and magnetothermal force on the working fluid. It is found that, since the magnetic force at the junction of pair magnets becomes strong remarkably and in the same direction as the gravity, descending convection flow is locally enhanced and the pair of symmetrical roll cells near the magnet junction becomes longitudinal. The local heat transfer corresponds to the affected roll cell pattern; locally enhanced at the magnet junctions and low heat transfer area is shifted aside the magnet outer edge. The averaged Nusselt number on the hot wall also increases proportionally to the magnetic induction but it is saturated at high magnetic induction. This suggests the roll cell pattern is no more largely affected at extremely-high magnetic induction.

Control of nucleation behavior and high magnetic induction in thin-gauged 3% Si–Fe strips

2003 ◽  
Vol 93 (10) ◽  
pp. 6695-6697 ◽  
Author(s):  
Y. S. Choi ◽  
K. H. Chai ◽  
S. B. Kim ◽  
S. S. Cho ◽  
N. H. Heo
Keyword(s):  
Magnetic Induction ◽  
Nucleation Behavior ◽  
High Magnetic Induction

Cold rolled Fe-6.5 wt. % Si alloy foils with high magnetic induction

2012 ◽  
Vol 111 (9) ◽  
pp. 094913 ◽  
Author(s):  
X. S. Fang ◽  
Y. F. Liang ◽  
F. Ye ◽  
J. P. Lin
Keyword(s):  
Magnetic Induction ◽  
Cold Rolled ◽  
High Magnetic Induction

Study on the Rheological Properties and Shear Model for Magneto-Rheological Fluids

2014 ◽  
Vol 635-637 ◽  
pp. 70-75 ◽  
Author(s):  
Cheng Bin Du ◽  
Fei Guo ◽  
Guo Jun Yu
Keyword(s):  
Shear Stress ◽  
Shear Rate ◽  
Magnetic Induction ◽  
Magnetic Particle ◽  
Soft Magnetic ◽  
Bingham Model ◽  
Particle Content ◽  
Magneto Rheological ◽  
Magnetic Induction Intensity ◽  
The Relationship

In this paper, the influence of the soft magnetic particle content on the properties of MRFs is studied. Besides, the relationships between the shear stress of MRFs and the magnetic induction intensity, the soft magnetic particle content, and the shear rate are discussed. The curve equation that expresses the relationship between the shear stress, the magnetic induction intensity, and the soft magnetic particle content is established through the fitting of experimental data. The results show that the shear stress of MRFs increases with increasing magnetic induction intensity and that the shear stress will tend to stabilise when the magnetic induction intensity reaches a sufficient value. The validity of the Bingham model and the H-B model for describing the relationship between the shear stress and shear rate is established, and the phenomenon of shear thinning of MRFs can be better represented by the H-B model than by the Bingham model.

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