会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明专利
    • Magnetic material molded product and manufacturing method thereof
    • JP5125818B2
    • 2013-01-23
    • JP2008173879
    • 2008-07-02
    • 日産自動車株式会社
    • 宜郎 川下宏規 坂元哲朗 田湯
    • H01F1/08H01F1/057H01F1/09H01F41/02H02K1/27H02K15/03
    • Y02T10/641
    • PROBLEM TO BE SOLVED: To provide a magnetic substance formed body that reduces the usage of expensive elements while maintaining high coercive force and further has superior heat resistance in a motor environment etc. SOLUTION: A concentration phase containing a concentration element having higher element density than average density in magnetic particles is incorporated in the interface between the magnetic particles constituting the magnetic substance formed body and an insulating film. Further, when the magnetic substance formed body is manufactured by molding with a bulk magnet by forming the insulating film on a surface of magnetic powder and then heating it in a pressure applied state, the surface of the magnetic powder is coated with a prescribed low-fusion-point material or its precursor before the insulating film is formed. Then, the insulating film is formed and the magnetic substance formed body is obtained through the heating and pressure application processing (molding processing) at prescribed temperature. Alternatively, while oxygen concentration in an atmosphere is increased in a pressure-reduced state, ionized metal elements are vapor-deposited on the surface of the magnetic powder to form an insulating film containing the metal elements on the surface of the magnetic powder, thus obtaining insulating coating magnetic powder. Then the obtained insulating coating magnetic powder is heated in a pressure-reduced state to obtain the magnetic substance formed body. COPYRIGHT: (C)2009,JPO&INPIT