发明授权
- 专利标题： Ferrite sintered magnet, ferrite particles, bonded magnet, motor, and generator
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申请号： US16469833申请日： 2017-12-22
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公开(公告)号： US11810699B2公开(公告)日： 2023-11-07
- 发明人: Junnichi Nagaoka , Hitoshi Taguchi , Yuichi Sugawara , Jo Sato
- 申请人： TDK Corporation
- 申请人地址： JP Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Faegre Drinker Biddle & Reath LLP
- 优先权： JP 16249675 2016.12.22
- 国际申请： PCT/JP2017/046220 2017.12.22
- 国际公布： WO2018/117261A 2018.06.28
- 进入国家日期： 2019-06-14
- 主分类号： H01F1/11
- IPC分类号： H01F1/11 ; C04B35/26 ; C04B35/626 ; C04B35/64 ; H02K1/02 ; H01F1/113 ; H01F1/10
摘要：
Provided is a ferrite sintered magnet including a ferrite phase having a magnetoplumbite-type crystal structure. x, y, and m satisfy the following Equations (1), (2), and (3) when composition of the ferrite sintered magnet is represented by R1-xAxFem-yCoy, where R denotes at least one kind of element selected from rare earth elements including Y and A denotes Ca or Ca and elements including at least one kind selected from Sr or Ba. The content of B in the ferrite sintered magnet is from 0.1% to 0.6% by mass in terms of B2O3.
0.2≤x≤0.8 (1)
0.1≤y≤0.65 (2)
3≤m
0.2≤x≤0.8 (1)
0.1≤y≤0.65 (2)
3≤m
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