Magnetic cores utilizing metallic glass ribbons and mica...

H - Electricity – 01 – F

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H01F 27/25 (2006.01) H01F 3/04 (2006.01) H01F 41/02 (2006.01)

Patent

CA 2079324

A magnetic core (2) is fabricated from ferromagnetic metallic glass ribbon and mica paper insulation (1), The ribbon and insulation are co-wound, so that layers comprise alternate concentric rings. The wound core is then annealed in a vacuum or an inert atmosphere such as dry nitrogen or argon gas. Co-wound cores of this type exhibit excellent magnetic properties at high magnetization rates and high voltage hold off between adjacent laminations, and are particularly suited for pulse power applications.

Noyau magnétique (2) fabriqué avec du ruban de verre métallique ferromagnétique et un isolant en papier de mica (1). Le ruban et l'isolant sont enroulés ensemble, de sorte que les couches comportent des anneaux concentriques de chacune des matières par alternance. Le noyau enroulé est ensuite recuit dans des conditions de vide ou dans une atmosphère inerte telle que de l'azote sec ou du gaz argon. Des noyaux enroulés de ce genre offrent d'excellentes propriétés magnétiques à des taux de magnétisation élevés et des blocages de courant élevés entre les structures lamifiées adjacentes; ils conviennent tout particulièrement pour les applications de courant pulsé.

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