Title:
COMPOSITE RARE EARTH ANISOTROPIC BOND MAGNET, COMPOUND FOR COMPOSITE RARE EARTH ANISOTROPIC BOND MAGNET, AND METHOD FOR MANUFACTURING THEM
Document Type and Number:
Japanese Patent JP3731597
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a bond magnet which is composed of Co loess R1 based d-HDDR anisotropic magnet powder and excellent in magnetic property and thermal resistance.
SOLUTION: This bond magnet is composed of Co loess R1 based d-HDDR coarse powder wherein mean particle diameter and compounding ratio are specified and surface coating is performed with surfactant, R2 based impalpable powder wherein surface coating is performed with surfactant, and resin which is binder (R1 and R2 are rare earth elements). Periphery of the Co loess R1 based d-HDDR coarse powder is surrounded with a ferromagnetic cushion object wherein R2 based impalpable powder is distributed equality in resin. The bond magnet shows superior thermal resistance together with high magnetic property in spite of the Co loess R1 based d-HDDR anisotropic magnet powder whose oxidation resistance is inferior and crack sensitivity is high is used.
Inventors:
Yoshinobu Honzo
Hironari Mitarai
Norihiko Hamada
Kenji Noguchi
Hironari Mitarai
Norihiko Hamada
Kenji Noguchi
Application Number:
JP2003367523A
Publication Date:
January 05, 2006
Filing Date:
October 28, 2003
Export Citation:
Assignee:
Aichi Steel Co., Ltd.
International Classes:
B22F1/02; H01F1/08; B22F3/00; H01F1/053; H01F41/02; (IPC1-7): H01F1/08; B22F1/02; B22F3/00; H01F1/053; H01F41/02
Domestic Patent References:
| JP8181015A | ||||
| JP2001076917A | ||||
| JP10289814A | ||||
| JP2003049204A | ||||
| JP5308007A | ||||
| JP3074810A | ||||
| JP10189319A | ||||
| JP9171916A | ||||
| JP10183308A |
Attorney, Agent or Firm:
Hiroshi Okawa