Soft magnetic powder

Details Soft magnetic powder Soft magnetic powder

B - Operations, Transporting

22

F

B22F 1/00 (2006.01) H01F 1/24 (2006.01) H01F 3/08 (2006.01) C09C 1/22 (2006.01)

Patent

CA 2670732

The present invention concerns a powder magnetic core for operating at high frequencies obtained by pressure forming an iron-based magnetic powder covered with an insulation film, and a specific resistance less than 1000, preferably less than 2000 and most preferably less than 3000 µm, a saturation magnetic flux density B above 1.5, preferably above 1.7 and most preferably above 1.9 (T). The invention also concerns the preparation of such cores as well as a powder which is suitable for the preparation.

La présente invention concerne un noyau magnétique poudreux destiné à fonctionner à des fréquences élevées, obtenu par moulage sous pression d'une poudre de matériau magnétique doux non à base de fer, recouverte d'un film isolant, et ayant une résistance spécifique de moins de 1000, de préférence de moins de 2000 et idéalement de moins de 3000 µm, une densité de flux magnétique de saturation B supérieure à 1,5, de préférence supérieure à 1,7, et idéalement supérieure à 1,9 (T). L'invention concerne également la préparation de tels noyaux ainsi qu'une poudre qui convient pour sa préparation.

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