| 简介 |
PROBLEM TO BE SOLVED : To provide a half-hard bond magnet which can obtain sufficient torque even at an ordinary temperature and a high temperature. SOLUTION : The composition of the half-hard magnetic powder of a half-hard bond magnet is expressed by a chemical formula, Fe100-a-b-c-d-e-Ra-Cob-Bc-Tid-Nbe, wherein, R is a rare earth element, a is 2.5-4.0 at%, b is 0.1-11.0 at%, c is 3.0-12.0 at%, d is 0-2.5 at% (0 at% is included), and e is 0-2.0 at% (0 at% is included). The coercive force (iHc) of the magnetic powder is 25.0-160.0 kA/m. Remanent magnetic flux density (Br) is 1.0 T or higher. A curie temperature is 310°C or higher. COPYRIGHT : (C)2010, JPO&INPIT |
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