Invention Grant
- Patent Title: Rare earth permanent magnetic material and method of preparing the same
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Application No.: US15192246Application Date: 2016-06-24
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Publication No.: US10340064B2Publication Date: 2019-07-02
- Inventor: Xiaoxia Deng , Bo Chen , Failang Zhang
- Applicant: BYD COMPANY LIMITED
- Applicant Address: CN Shenzhen
- Assignee: BYD COMPANY LIMITED
- Current Assignee: BYD COMPANY LIMITED
- Current Assignee Address: CN Shenzhen
- Agency: Anova Law Group, PLLC
- Priority: CN201310740581 20131227
- Main IPC: H01F1/057
- IPC: H01F1/057 ; B22F3/24 ; B22F9/04 ; H01F1/055 ; H01F41/02 ; C22C1/02 ; C22C28/00 ; C22C33/04 ; C22C38/00 ; C22C38/06 ; C22C38/10 ; C22C38/12 ; C22C38/14 ; C22C38/16 ; B22D7/00 ; B22F3/16 ; C22C30/02 ; C22C30/04 ; B22F9/02 ; C22C33/02

Abstract:
A rare earth permanent magnetic material contains a main phase of R1x1R2y1Fe1-x1-y1-z1-u1Coz1Bu1, and an auxiliary phase including a first auxiliary phase of R3x2R4y2Fe1-x2-y2-z2-u2-v1Coz2Bu2Mv1 and a second auxiliary of R5x3R6y3Fe1-x3-y3-z3-u3-v2Coz3Bu3Mv2. Each of R1, R3 and R5 is Pr and/or Nd. Each of R2, R4 and R6 is at least one of Dy, Tb and Ho. M is at least one of Zr, Ga, Cu, Nb, Sn, Mo, Al, V, W, Si, Hf, Ti, Zn, Bi, Ta and In. 26 wt %≤x1+y1≤34 wt %, 0.01 wt %≤y1≤4 wt %, 0≤z1≤6 wt %, and 0.78 wt %≤u1≤1.25 wt %. 35 wt %≤x2+y2≤82 wt %, 5 wt %≤y2≤42 wt %, 0≤z2≤40 wt %, 0≤u2≤1.25 wt %, and 0≤v1≤10 wt %. 10 wt %≤x3+y3≤32 wt %, 0≤y3≤4.8 wt %, 0≤z3≤40 wt %, 0≤u3≤1.25 wt %, and 31 wt %≤v2≤50 wt %.
Public/Granted literature
- US20160307676A1 RARE EARTH PERMANENT MAGNETIC MATERIAL AND METHOD OF PREPARING THE SAME Public/Granted day:2016-10-20
Information query
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