Invention Grant
- Patent Title: Powder magnetic core with terminal and method for manufacturing the same
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Application No.: US16496125Application Date: 2018-03-23
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Publication No.: US11854727B2Publication Date: 2023-12-26
- Inventor: Akio Uchikawa
- Applicant: PROTERIAL, LTD.
- Applicant Address: JP Tokyo
- Assignee: PROTERIAL, LTD.
- Current Assignee: PROTERIAL, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP 17059694 2017.03.24
- International Application: PCT/JP2018/011860 2018.03.23
- International Announcement: WO2018/174268A 2018.09.27
- Date entered country: 2019-09-20
- Main IPC: H01F27/28
- IPC: H01F27/28 ; H01F1/24 ; H01F27/255 ; H01F41/02 ; H01F1/147 ; H01F27/29

Abstract:
A powder magnetic core with terminal includes: a powder magnetic core composed of Fe-based alloy particles including Fe and an element M (M is Cr and/or Al) which is more easily oxidizable than Fe; and at least two terminals formed at an interval on a surface of the powder magnetic core. The powder magnetic core includes the Fe-based alloy particles, and an underlayer including the element M (M is Cr and/or Al), Fe and O formed on a surface of the Fe-based alloy particles. A first layer including at least one of Cr or Al and O is formed on a surface including a region in which the terminals of the powder magnetic core are formed. The terminals are formed on a surface of the first layer. Each of the terminals includes a second layer including one of Au, Ag, Cu, Ti or Cr.
Public/Granted literature
- US20200098505A1 POWDER MAGNETIC CORE WITH TERMINAL AND METHOD FOR MANUFACTURING THE SAME Public/Granted day:2020-03-26
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