J Mater Sci Technol ›› 2000, Vol. 16 ›› Issue (02): 127-128.

• Research Articles • Previous Articles     Next Articles

High energy and high coercivity sintered NdFeB magnets by low oxygen process

Kaihong DING, Guozheng LIU, Zhejun LI, Jieming YAN, Yingjie TAO, Bing WU   

  1. Baotou Research Institute of Rare Earth, Baotou 014010, China
  • Received:1999-07-02 Revised:2000-01-05 Online:2000-03-28 Published:2009-10-10
  • Contact: Kaihong DING

Abstract: Using ball milling and single direction pressing, we can produce high performance NdFeB sintered' magnets. The oxygen content of sintered magnets can be controlled under 1500x10(-6) and the magnetic performance can be improved by using low oxygen processing. The high performance NdFeB sintered magnets with B-r=(1.4+/-0.2)T, (j)H(c)greater than or equal to 796kA/m and (BH)(max)=(390+/-16) kJ/m(3), have been batch produced.

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