POWDER MAGNETIC CORE AND HIGH FREQUENCY REACTOR USING THE SAME

WIPO Patent Application WO/2003/060930

A1

A powder magnetic core prepared by the compression molding of a magnetic powder, wherein the magnetic powder is made of an alloy having a composition: Si: 1 to 10 wt %, O: 0.1 to 1.0 and balance: Fe, and the magnetic core comprises the above magnetic powder having a particle diameter of 150 μm or less and, caused to be present between particles constituting the powder, an insulator containing SiO₂ and MgO as main components.

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Fujiwara, Teruhiko c/o NEC TOKIN CORPORATION 7-1 (Koriyama 6-chome Taihaku-ku Sendai-shi, Miyagi, 982-8510, JP)
Ishii, Masayoshi c/o NEC TOKIN CORPORATION 7-1 (Koriyama 6-chome Taihaku-ku Sendai-shi, Miyagi, 982-8510, JP)
Saito, Yoshitaka c/o NEC TOKIN CORPORATION 7-1 (Koriyama 6-chome Taihaku-ku Sendai-shi, Miyagi, 982-8510, JP)

PCT/JP2002/000292

July 24, 2003

January 17, 2002

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NEC TOKIN CORPORATION (7-1 Koriyama 6-chome Taihaku-ku, Sendai-shi, Miyagi, 982-8510, JP)

B22F1/00; C22C38/02; H01F1/147; H01F1/24; H01F1/26; H01F1/33; H01F27/255; H01F41/02; H01F3/08; H01F3/14; H01F17/04; H01F37/00; B22F1/00; C22C38/02; H01F1/12; H01F27/255; H01F41/02; H01F3/00; H01F17/04; H01F37/00; (IPC1-7): H01F1/24; H01F41/02

Goto, Yosuke (The Third Mori Building 4-10, Nishishinbashi 1-chome Minato-ku, Tokyo, 105-0003, JP)

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