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Magnetic Properties of Fe-Based Ribbons and Toroidal Cores Prepared by Continuous Joule Heating Under Tensile Stress

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Title: Magnetic Properties of Fe-Based Ribbons and Toroidal Cores Prepared by Continuous Joule Heating Under Tensile Stress
Authors: Yanai, Takeshi / Shimada, A. / Takahashi, Kenichiro / Nakano, Masaki / Yoshizawa, Y. / Fukunaga, Hirotoshi
Issue Date: Oct-2006
Publisher: Institute of Electrical and Electronics Engineers
Citation: IEEE transactions on magnetics. 42(10), pp.2781-2783; 2006
Abstract: Nanocrystallized Fe73.5Cu1Nb3Si15.5B7 ribbons with controlled permeability were prepared by using continuous stress-annealing by Joule heating (CSA-JH) method. An optimization of the annealing conditions revealed that a completely developed anisotropy perpendicular to the ribbon axis can be obtained stably in the moving velocity range from 1 to 200 cm/min at the current density of 37.5 A/mm2. In particular, the highest velocity of 200 cm/min achieved the significant reduction in effective annealing time. The core made from the above-mentioned ribbon had good ac-magnetic properties such as constant permeability up to 2 MHz and low magnetic loss compared with those for different types of cores with controlled permeability. Consequently, it was clarified that the CSA-JH method is one of effective techniques for production of high performance toroidal cores with controlled permeability.
Keywords: Continuous stress-annealing / controlled permeability / Joule heating / magnetic toroidal core / nano-crystalline / stressinduced anisotropy
URI: http://hdl.handle.net/10069/20057
ISSN: 00189464
DOI: 10.1109/TMAG.2006.880078
Rights: (c)2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/20057

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