- 专利标题: Rare-earth permanent magnet and method of manufacturing the same
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申请号: US16951729申请日: 2020-11-18
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公开(公告)号: US11682506B2公开(公告)日: 2023-06-20
- 发明人: Do Hoon Kim , Hyung Ju Lee , Jae Hyuk Jang , Young Beom Kim , Dong Hwan Kim , Koon Seung Kong
- 申请人: Hyundai Motor Company , Kia Motors Corporation , Star Group Ind. Co. LTD
- 申请人地址: KR Seoul
- 专利权人: Hyundai Motor Company,Kia Motors Corporation,Star Group Ind. Co. Ltd.
- 当前专利权人: Hyundai Motor Company,Kia Motors Corporation,Star Group Ind. Co. Ltd.
- 当前专利权人地址: KR Seoul; KR Seoul; KR Daegu
- 代理机构: Fox Rothschild LLP
- 优先权: KR 20200042885 2020.04.08
- 主分类号: H01F1/057
- IPC分类号: H01F1/057 ; H01F41/02 ; B22F9/04 ; B22F3/24 ; B22F3/10 ; C22C38/00
摘要:
Disclosed are a rare-earth permanent magnet having improved magnetic properties and a method of manufacturing the same.
A method of manufacturing a rare-earth permanent magnet may include: preparing a mixed powder including i) a first alloy represented by R1aR2bBcMdFebal and ii) a second alloy represented by R2bBcMdFebal where R1 is one or two or more of La, Ce, and Y; R2 is a rare-earth element except for La, Ce, and Y; and M is a metal element; press-forming and sintering the prepared mixed powder in a magnetic field to prepare a sintered body; and performing a heat treatment based on diffusion temperature conditions of an R1 component and an R2 component contained in the prepared sintered body.
A method of manufacturing a rare-earth permanent magnet may include: preparing a mixed powder including i) a first alloy represented by R1aR2bBcMdFebal and ii) a second alloy represented by R2bBcMdFebal where R1 is one or two or more of La, Ce, and Y; R2 is a rare-earth element except for La, Ce, and Y; and M is a metal element; press-forming and sintering the prepared mixed powder in a magnetic field to prepare a sintered body; and performing a heat treatment based on diffusion temperature conditions of an R1 component and an R2 component contained in the prepared sintered body.
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