Patent ID: 11923114
Assignee: YANTAI SHOUGANG MAGNETIC MATERIALS INC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A NdFeB alloy powder for forming high-coercivity sintered NdFeB magnets, the NdFeB alloy powder including NdFeB alloy core particles with a multi-layered coating, wherein the multi-layered coating comprises:
a first metal layer directly disposed on the NdFeB alloy core particles wherein the first metal layer consists of at least one of Tb and Dy;
a second metal layer directly disposed on the first metal layer, wherein the second metal layer consists of at least one of W, Mo, Ti, Zr, and Nb; and
a third metal layer directly disposed on the second metal layer, wherein the third metal layer consists of (i) at least one of Pr, Nd, La, and Ce; or (ii) a combination of one selected from the group consisting of Cu, Al, and Ga and at least one selected from the group consisting of Pr, Nd, La, and Ce.