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DUBLIN--(BUSINESS WIRE)--Research and Markets has announced the addition of the "Ferrite Magnetic Powder Market: Global Industry Trends, Share, Size, Growth, Opportunity and Forecast 2017-2022" report to their offering. 'Ferrite Magnetic Powder Market: Global Industry Trends, Share, Size, Growth, Opportunity and Forecast 2017-2022'', provides a comprehensive evaluation of the ferrite magnet market and offers a techno-commercial roadmap for setting up a ferrite magnet manufacturing plant. There are number of factors which are currently driving the market for ferrite magnetic powder. The major factor which has contributed immensely to the growth of the market is the expanding industrial applications of ferrite magnetic powder. Some of the applications include medium and higher energy speaker rings, magnetic separators, toys, novelties, magnetic therapy, holding-magnet systems, automotive motors, NMR devices and coatings of magnetic recording tapes. Ferrite magnets are cost-effective and can be used as an alternative to metallic magnets. These are slowly becoming popular among the manufacturers as they exhibit better resistance to demagnetization and excellent corrosion resistance. Ferrite permanent magnets exist in two forms - strontium ferrite magnets and barium ferrite magnets. The report has segmented the market on the basis of key regions. Some of the regions covered in the report include China, USA, Japan, India, etc. Amongst these, China represents the biggest producer and consumer of ferrite magnets, accounting for more than 60% of the total demand. Apart from this, the report has also provided an analysis of the competitive landscape of the market. Based on the findings of the report, the major ferrite magnets manufacturers are situated in China and Japan such as JPMF Guangdong Co. Ltd, Ningbo Yunsheng Co. Ltd, Hangzhou Permanent Magnet Group, Hitachi Metals Ltd Daido Steel Co. Ltd and Shin-Etsu Chemical Co. Ltd. For more information about this report visit http://www.researchandmarkets.com/research/6c532t/ferrite_magnetic


Dong Y.,Ningbo Institute of Materials Technology and Engineering | Man Q.,Ningbo Institute of Materials Technology and Engineering | Zhang J.,Ningbo Institute of Materials Technology and Engineering | Zhang J.,Xinjiang University | And 4 more authors.
IEEE Transactions on Magnetics | Year: 2015

Glassy Fe77P7B13Nb2Cr1 alloy powders with the particle size below 100μm were synthesized by water atomization using industrial raw materials. The glassy powders were consolidated into bulk forms through sintering them at different temperatures by hot pressing. The resulting glassy core sintered at 771 K, which between the supercooled liquid region, has a high relative density of 91% compared with the master alloy. It also exhibits good soft magnetic properties, i.e., high saturation magnetic flux density Bs of 1.13 T, low coercive force Hc of 50 A/m, relatively high effective permeability μe of 1200 at 1 kHz under a field of 1 A/m, low core loss P of 1393 mW/cm3 at 50 kHz under the maximum magnetic flux density of 0.1 T. The synthesis of Fe-based glassy cores with good soft magnetic properties is encouraging for future applications as functional materials. © 2015 IEEE.


Guo J.,Xinjiang University | Guo J.,Ningbo Institute of Materials Technology and Engineering | Dong Y.,Ningbo Institute of Materials Technology and Engineering | Man Q.,Ningbo Institute of Materials Technology and Engineering | And 5 more authors.
Journal of Magnetism and Magnetic Materials | Year: 2016

Fe-based amorphous magnetic alloy powders with a composition of (Fe0.76Si0.09B0.1P0.05)99Nb1 were first prepared by water atomization, and then amorphous magnetic powder cores were produced from a mixture of the amorphous alloy powders with diameters of below 75 μm and different volume of insulation and bonding materials by mold compacting with a compact pressure of 2200 MPa at room temperature. The amorphous magnetic cores exhibit superior DC-bias properties and excellent soft magnetic properties after appropriate heating treatment. The DC-bias properties of the present amorphous magnetic cores just decrease 15% as the external field increases to 100 Oe. Meanwhile, it also exhibits a high permeability of 56 at 1 MHz and a low core loss of 451 W/kg at Bm=0.1 T and f=100 kHz. The present Fe-based amorphous magnetic powder cores with superior DC-bias properties are a potential candidate for a variety of industrial applications. © 2015 Elsevier B.V. All rights reserved.


Patent
Ningbo Yunsheng Co., High-Tech, Ningbo Yunsheng Special Metal Material Co. and Baotou Yunsheng Strong Magnetic Material Co. | Date: 2014-11-14

A method for preparing a NdFeB-based sintered magnet. The method includes: 1) providing a master alloy and an auxiliary alloy, the master alloy being a NdFeB alloy ingot or cast strip, the auxiliary alloy being a heavy rare earth alloy; 2) breaking up the master alloy using a hydrogen decrepitation process to yield a crude powder, conducting hydrogen absorption treatment on the auxiliary alloy and breaking up the hydrogenated auxiliary alloy to yield hydride particles; 3) uniformly mixing and stirring the crude powder of the master alloy and the hydride particles of the auxiliary alloy to yield a mixture; 4) milling the mixture obtained in step 3) to yield powders; 5) uniformly stirring the powders obtained in step 4) and conducting orientation forming treatment on the powders, to yield a raw body of a NdFeB based magnet; and 6) sintering the raw body of the NdFeB based magnet.


Gan Z.,University of Shanghai for Science and Technology | Gan Z.,Ningbo Institute of Materials Technology and Engineering | Huo J.,Ningbo Institute of Materials Technology and Engineering | Chang C.,Ningbo Institute of Materials Technology and Engineering | And 3 more authors.
Gongneng Cailiao/Journal of Functional Materials | Year: 2015

Fe-Si-B amorphous alloy ribbons were melt-spun, and the amorphous powders were made by ball-milling the ribbons. The azo dye direct blue 2B was decolorized by the amorphous alloy powders. We made apreliminary study towards the weak magnetic field's effect on the decolorization of azo dye by Fe-based amorphous alloy powders via manipulating the magnetic field intensity generated by the Helmholtz coils, the dosage of the amorphous alloy powders. It was found that within certain magnetic field intensity range, increasing the intensity will result in the increase of decolorization rate. With H=3980 A/m, the t1/2 was 5.0 min, and the decolorization rate was increased by 40% compared to that of H=0 A/m. With the increase of the Fe-based amorphous alloy powder dosage, the positive impact of the magnetic field on the decolorization rate was improved at firstand then stabilized. ©, 2015, Journal of Functional Materials. All right reserved.


Sun H.,University of Shanghai for Science and Technology | Sun H.,Ningbo Institute of Materials Technology and Engineering | Wang A.-D.,Ningbo Institute of Materials Technology and Engineering | Chang C.-T.,Ningbo Institute of Materials Technology and Engineering | And 4 more authors.
Gongneng Cailiao/Journal of Functional Materials | Year: 2015

Based on the Fe-Si-B-P amorphous alloy system, we successfully developed the amorphous alloys with large GFA and excellent magnetic properties by micro-alloying Mo element and increasing Fe content. We found that micro addition of Mo can effectively increase the glass forming ability. With only 1% addition of Mo, the Fe limitation to form a single amorphous phase is increased up to 84% leading to a high Bs up to 1.63 T. Additionally, the as designed Fe80Si4.75B9.5P4.75Mo1 alloy can form a glassy rod with a Dcr of 1 mm exhibiting a high Bs of 1.54 T and low Hc of 1.9 A/m. Owning to the excellent magnetic properties such as low Hc of 1.9-5.1 A/m and higher Bs than traditional Fe-Si-B amorphous alloys, the present alloy system is believed to be promising soft magnetic materials for the application in the future. ©, 2015, Journal of Functional Materials. All right reserved.


Xiang Z.,University of Shanghai for Science and Technology | Xiang Z.,Ningbo Institute of Materials Technology and Engineering | Wang A.,Ningbo Institute of Materials Technology and Engineering | Zhao C.,Ningbo Institute of Materials Technology and Engineering | And 5 more authors.
Journal of Alloys and Compounds | Year: 2015

The effects of Nb content on the thermal stability, microstructural evolution and soft-magnetic properties of nanocrystalline Fe83-xSi4B10P2Cu1Nbx alloys were systematically investigated. Appropriate Nb addition was found to be effective both in prolonging operative annealing time and annealing temperature range and in improving magnetic softness by tuning the size and distribution of nano-sized α-Fe inclusions. The effective annealing time of 30 min over temperature range of 723-793 K, in combination with desirable soft-magnetic properties including high saturation magnetic flux density (Bs) of 1.73 T, low coercivity (Hc) of 4.5A/m and high effective permeability (μe) of 23,000 at 1 kHz, entitles Nb-containing Fe82Si4B10P2Cu1Nb1 nanocrystalline alloy a truly industrial advantage in energy-economic efficiency and great potentials in electromagnetic applications. © 2014 Elsevier B.V.


Zhu Y.-D.,Ningbo Yunsheng Co. | Wu J.-M.,Ningbo Yunsheng Co.
Journal of Donghua University (English Edition) | Year: 2010

In compact spinning with pneumatic groove, the computational fluid dynamic model, computed with parallel technologies & Fluent 6.3, is developed to simulate the flow field in condensing zone with 3D computational fluid dynamic (CFD) technology. Flowing state, distribution rules of static pressure, and velocity in condensing zone are characterized and analyzed. The results show that the fiber bundle in compact spinning with pneumatic groove is compacted by airflow and the shape of the pneumatic groove, and the static pressure in condensing zone is negative, as well as the velocity of airflow in condensing zone is not zero. The fluctuation frequencies of the static pressure and velocity near the bottom of the pneumatic groove are relatively higher, and the number of the fluctuation is equal to that of the round holes in condensing zone. Copyright © 2010 Editorial Department of Journal of Donghua University.


Zou Z.Y.,Donghua University | de Zhu Y.,Ningbo Yunsheng Co. | Hua Z.H.,Donghua University | Wang Y.,Donghua University | Cheng D.L.,Donghua University
Textile Research Journal | Year: 2010

A dynamic model of the infinitesimal element of the flexible fiber is proposed, which describes the flexible fiber trajectory in the condensing zone of compact spinning with lattice apron. Based on the flow simulation in the condensing zone, the flexible fiber trajectory is simulated by a specially designed Matlab program routine. The trajectories of the fibers of different initial positions can explain the pneumatic condensing mechanism in the condensing zone. The results show that fiber trajectories of different initial positions in the condensing zone gradually converge, and the condensing process of the fiber bundle is divided into three parts: the rapid condensing region, the adjustive condensing region and the steady condensing region. The fibers of different initial positions will be interlaced for position change in yarn cross-section, caused by the airflow in the condensing zone. Moreover, fibers will gradually close the surface of the lattice apron when fibers are delivered from the rapid condensing region to the steady condensing region. © The Author(s), 2010.

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