| 简介 |
PROBLEM TO BE SOLVED : To provide a rare-earth bond magnet having high strength, and keeping a magnetic characteristic high even when used at high temperature.
SOLUTION : This integrally-formed rare-earth bond magnet 10 includes a first region 12 containing magnetic particles each containing an R-T-B-based alloy (R is a rare-earth element and T is Fe and/or Co) having a heavy rare-earth element, and a second region 14 containing magnetic particles each containing an R-T-B-based alloy having a light rare-earth element. In the rare-earth bond magnet 10, the first region 12 contains magnetic particles higher in a mass ratio of the heavy rare-earth element with respect to all rare-earth elements in comparison with a mass ratio in the second region 14.
COPYRIGHT : (C)2012, JPO&INPIT |
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