US 11,942,245 B2
Grain boundary engineering of sintered magnetic alloys and the compositions derived therefrom
Miha Zakotnik, Austin, TX (US)
Assigned to Noveon Magnetics Inc., Perryville, MD (US)
Filed by Noveon Magnetics Inc., Perryville, MD (US)
Filed on Dec. 21, 2022, as Appl. No. 18/069,321.
Application 18/069,321 is a division of application No. 16/073,521, granted, now 11,557,411, previously published as PCT/US2017/014488, filed on Jan. 23, 2017.
Claims priority of provisional application 62/324,501, filed on Apr. 19, 2016.
Claims priority of provisional application 62/288,243, filed on Jan. 28, 2016.
Prior Publication US 2023/0154657 A1, May 18, 2023
Int. Cl. C22C 33/02 (2006.01); B22F 1/052 (2022.01); B22F 1/17 (2022.01); B22F 3/10 (2006.01); B22F 3/24 (2006.01); B22F 5/00 (2006.01); B22F 9/04 (2006.01); C22C 38/00 (2006.01); H01F 1/057 (2006.01); B22F 1/054 (2022.01); B22F 9/06 (2006.01); H01F 41/02 (2006.01)
CPC H01F 1/0577 (2013.01) [B22F 1/052 (2022.01); B22F 1/17 (2022.01); B22F 3/1035 (2013.01); B22F 3/24 (2013.01); B22F 5/00 (2013.01); B22F 9/04 (2013.01); C22C 33/02 (2013.01); C22C 33/0207 (2013.01); C22C 38/00 (2013.01); B22F 1/054 (2022.01); B22F 1/056 (2022.01); B22F 2003/248 (2013.01); B22F 2009/044 (2013.01); B22F 9/06 (2013.01); B22F 2201/013 (2013.01); B22F 2201/20 (2013.01); B22F 2202/05 (2013.01); B22F 2207/07 (2013.01); B22F 2998/10 (2013.01); B22F 2999/00 (2013.01); C22C 2202/02 (2013.01); H01F 41/0293 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A composition comprising a GBM alloy represented by the formula (Nd0.01-0.18Pr0.01-0.18Dy0.3-0.5Tb0.3-0.5)aa (Co0.85-0.95Cu0.04-0.15Fe0.01-0.08)bb (Zr0.00-1.00)cc; wherein:
(i) aa is a value in a range of from 42 atom % to 75 atom %;
(ii) bb is a value in a range of from 6 atom % to 60 atom %; and
(iii) cc is a value in a range of from 0.01 atom % to 18 atom %;
wherein the combined amount of Nd+Pr is greater than 12 atom %;
wherein, within aa, the combined amounts of Nd+Pr+Dy+Tb is from about 95 atom % to about 100 atom %;
wherein, within bb, the combined amounts of Co+Cu+Fe is from about 95 atom % to about 100 atom %; and
wherein aa+bb+cc is from about 0.995 to about 1.