Producing Microscopic Permanent Magnet with Rapid Cooling Method(<Special Issue>Asia-Pacific Symposium on Applied Electromagnetics and Mechanics(APSAEM10))

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Abstract

Purpose of this study is to develop Nd-Fe-B microscopic permanent magnet wires by using rapid cooling techniques for applications in micro magnetic actuators. The Nd-Fe-B permanent magnets have been contributed to improve efficiency of electrical machines and magnetic actuators and to miniaturize their size and weight. Recently use of Nd-Fe-B based permanent magnets in micro machines is also paid attention to improve moving performance such as increasing torque and reducing energy losses. Our target is producing a 0.2mm diameter wire shape permanent magnet directly by using a spinning method in rotating liquid. Composition of mother alloy is Nd_6Fe_<79>B_<15> at.%. A ribbon sample was also made by single-role process in argon atmosphere for comparison. The magnetic property of the ribbon showed hard magnetic property. Referring this result, we produced Nd-Fe-B based wires with the spinning method in rotating liquid. The oxidation of Nd and cooling rate of melt jet affected the coercive force.

Journal

  • 日本AEM学会誌 = Journal of the Japan Society of Applied Electromagnetics

    日本AEM学会誌 = Journal of the Japan Society of Applied Electromagnetics 19(Supplement), S57-S62, 2011-09-10

    日本AEM学会

References:  7

Codes

  • NII Article ID (NAID)
    110008904223
  • NII NACSIS-CAT ID (NCID)
    AN10457520
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    09194452
  • NDL Article ID
    023429018
  • NDL Call No.
    Z15-B3
  • Data Source
    CJP  NDL  NII-ELS  IR 
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