PERMANENT MAGNET AND MANUFACTURING METHOD FOR PERM
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专利名称：PERMANENT MAGNET AND
MANUFACTURING METHOD FOR
PERMANENT MAGNET
发明人：OZEKI IZUMI,KUME KATSUYA,HIRANO KEISUKE,OMURE TOMOHIRO,TAIHAKU
KEISUKE,OZAKI TAKASHI
申请号：EP11765487
申请日：20110328
公开号：EP2503568A4
公开日：
20130403
专利内容由知识产权出版社提供
摘要：There are provided a permanent magnet and a manufacturing method thereof capable of decreasing an activity level of a calcined body activated by a calcination process. To fine powder of milled neodymium magnet is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M-(OR)x (M represents V, Mo, Zr, Ta, Ti, W or Nb, R represents a substituent group consisting of a straight-chain or branched-chain hydrocarbon, x represents an arbitrary integer) so as to uniformly adhere the organometallic compound to particle surfaces of the neodymium magnet powder. Thereafter, desiccated magnet powder is held for several hours in hydrogen atmosphere at 200 through 900 degrees Celsius. Thereafter, the powdery calcined body calcined through the calcination process in hydrogen is held for several hours in vacuum atmosphere at 200 through 600 degrees Celsius for a dehydrogenation process.
申请人：NITTO DENKO CORPORATION
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