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Title:
PERMANENT MAGNET AND MANUFACTURING METHOD FOR PERMANENT MAGNET
Document Type and Number:
WIPO Patent Application WO/2011/125595
Kind Code:
A1
Abstract:
Disclosed are a permanent magnet and a manufacturing method for the permanent magnet in which the grain growth of magnet grains having a single-domain particle is inhibited during sintering, and in which the magnetic properties are improved. An organometallic compound solution, to which an organometallic compound represented by the formula M-(OR)x has been added, is added to a powder of a pulverized neodymium magnet, and the organometallic compound is uniformly deposited on the surface of the neodymium magnet grains. Afterwards, the dried magnet powder is calcined by plasma heating, and a permanent magnet (1) is manufactured by sintering the calcined pulvulerent calcined body after the formation thereof. (In the formula, M is V, Mo, Zr, Ta, Ti, W, or Nb. R is a substituent group comprising a hydrocarbon, R is a C2-6 alkyl group and can be a straight chain or a branched chain. x is an arbitrary integer.)

Inventors:
OZEKI Izumi (1-1-2 Shimohozumi, Ibaraki-sh, Osaka 80, 〒5678680, JP)
尾関 出光 (〒80 大阪府茨木市下穂積1丁目1番2号 日東電工株式会社内 Osaka, 〒5678680, JP)
KUME Katsuya (1-1-2 Shimohozumi, Ibaraki-sh, Osaka 80, 〒5678680, JP)
久米 克也 (〒80 大阪府茨木市下穂積1丁目1番2号 日東電工株式会社内 Osaka, 〒5678680, JP)
HIRANO Keisuke (1-1-2 Shimohozumi, Ibaraki-sh, Osaka 80, 〒5678680, JP)
平野 敬祐 (〒80 大阪府茨木市下穂積1丁目1番2号 日東電工株式会社内 Osaka, 〒5678680, JP)
Application Number:
JP2011/057576
Publication Date:
October 13, 2011
Filing Date:
March 28, 2011
Export Citation:
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Assignee:
NITTO DENKO CORPORATION (1-1-2, Shimohozumi Ibaraki-sh, Osaka 80, 〒5678680, JP)
日東電工株式会社 (〒80 大阪府茨木市下穂積1丁目1番2号 Osaka, 〒5678680, JP)
OZEKI Izumi (1-1-2 Shimohozumi, Ibaraki-sh, Osaka 80, 〒5678680, JP)
尾関 出光 (〒80 大阪府茨木市下穂積1丁目1番2号 日東電工株式会社内 Osaka, 〒5678680, JP)
KUME Katsuya (1-1-2 Shimohozumi, Ibaraki-sh, Osaka 80, 〒5678680, JP)
久米 克也 (〒80 大阪府茨木市下穂積1丁目1番2号 日東電工株式会社内 Osaka, 〒5678680, JP)
HIRANO Keisuke (1-1-2 Shimohozumi, Ibaraki-sh, Osaka 80, 〒5678680, JP)
International Classes:
H01F41/02; B22F1/00; B22F1/02; C22C33/02; C22C38/00; H01F1/053; H01F1/08
Attorney, Agent or Firm:
NEXT INTERNATIONAL (7th Floor, Daiei Building11-20, Nishiki 1-chome, Naka-k, Nagoya-shi Aichi 03, 〒4600003, JP)
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Claims: