Results 191 to 200 of about 3,955 (234)

Iron disproportionation in peridotite fragments from the mantle transition zone. [PDF]

Nat Commun
Pan F, Wu X, Wang C, Zhang Y, Yang Y, He X, Jin C, Zhou L, Zhang H, He H, Zhang J.   +10 more
europepmc   +1 more source

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Compressed iron powder core for electric motors

IEEE Transactions on Magnetics, 1972
The magnetic properties of compressed powder cores made of iron powder with high compressibility were investigated with the goal of making them practical in electric motors. An electrolytic iron powder and an atomized iron powder with a finely powdered resin were compacted under a pressure of 6 tons/cm2.
K. Fukui, I. Watanabe, M. Morita
exaly   +2 more sources

Magnetic Property of Iron-Dust Cores With Mixture of Ferromagnetic Ferrite Powder and Alumina Powder

IEEE Transactions on Magnetics, 2014
Iron-dust cores are produced from insulated iron particles by using the powder metallurgy pressure forming process. These dust cores are suitable for small motor cores because of their high shape flexibility; however, the iron loss of iron-dust cores is larger than conventional laminated cores.
Kyyoul Yun, Yasuo Okazaki
exaly   +2 more sources

The enhanced magnetic properties of FeSiCr powder cores composited with carbonyl iron powder

Journal of Materials Science: Materials in Electronics, 2021
Toroid-shaped Fe-based soft magnetic powder cores (SMPCs) were prepared by cold pressing commercial FeSiCr and carbonyl iron powder (CIP) insulated with epoxy resin. The effect of the CIP mass ratio on the magnetic properties of powder cores, which included the dependences of the effective permeability (μe), DC bias characteristic, and core loss (Pcv),
Mengji Gong, Yaqiang Dong, Jianjun Huang, Liang Chang, Yan Pan, Falong Wang, Aina He, Jiawei Li, Xincai Liu, Xinmin Wang   +9 more
openaire   +1 more source

Permanent-magnet machines with powdered iron cores and prepressed windings

IEEE Transactions on Industry Applications, 2000
This paper presents a permanent magnet servo motor, built with a powdered iron stator, which has been designed to take full advantage of the properties of the material. There are a number of important design features which are not possible with laminated cores.
A.G. Jack, B.C. Mecrow, P.G. Dickinson, D. Stephenson, J.S. Burdess, J.N. Fawcett, T. Evans   +6 more
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Manufacture of magnetic cores from various iron powders

Soviet Powder Metallurgy and Metal Ceramics, 1982
Coercive force measurements were made on grades PZh4M3, PZhCh3SV, PZhCh3MV, NC 100.24, PZhR(0) and PZhE iron powders and magnetic cores heat treated in the temperature range 750–1200°C. Iron powders of large specific surface are characterized by greater coercive forces compared with powders of small specific surface.
A. S. Petrov, A. B. Suchkov, T. N. Ermakova, Z. A. Tubyshkina, A. V. Trifonova   +4 more
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Powdered iron cores for RF magnetics

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035), 2003
Investigations were made to determine what are the effects of varying specific materials and conditions during manufacturing of powdered iron magnetic cores on the initial permeability and Q of the core. Discussions are limited to core material mixes used for RF frequency applications.
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Induction motor made of iron powder core

The 2010 International Power Electronics Conference - ECCE ASIA -, 2010
In this paper, induction motor made of iron powder core is presented. Almost all HEV and EV use rare earth permanent magnet motor as a traction motor. Nowadays, resource crisis of rare earth materials is coming. This paper proposes novel induction motor made of Soft Magnetic Composite (SMC).
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Improved Magnetic Properties of Silicon-Iron Alloy Powder Core

Materials Science Forum, 2007
Eventhough Fe-6.5 wt.% Si alloy shows excellent magnetic properties, magnetic components made of the alloy with the composition are not totally commercialized because of its extremely low ductility. In order to overcome this demerit of alloy, 6.7 wt.% Si alloy powders were produced by gas atomization and then post-processed to form magnetic cores.
Tae Kyung Lee, Gu Hyun Kim, Gwang Bo Choi, In Bum Jeong, Kwang Youn Kim, Pyung Woo Jang   +5 more
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Consolidated iron powder and ferrite cores

2019
This chapter discusses the production and applications of iron powder and ferrite magnetic cores. More recently, iron and SiFe bulk components have been developed and commercialised for applications requiring mass produced, cheap, mechanically strong and dimensionally accurate net shape cores for magnetic components.
openaire   +1 more source