| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8148051 | Current Applied Physics | 2018 | 19 Pages |
Abstract
In this work, we investigated the influence of additional compounds of Nd-Cu-Al, Dy-Nb-Al, Dy-Zr-Al and Nb-Cu-Al on coercivity of sintered Nd-Fe-B magnets. The additional nanoparticles with size in the range of 40-80â¯nm was mixed with the micrometer Nd-Fe-B powder before sintering process. The results show that the coercivity of the sintered Nd-Fe-B magnets can be improved by introducing additional nanoparticles to their grain boundaries. The improvement of the coercivity of the magnets is clearly dependent on composition and fraction of the additional compounds. While the Dy-Nb-Al, Dy-Zr-Al and Nb-Cu-Al compounds degrade the coercivity of the sintered Nd-Fe-B magnets, the Nd-Cu-Al nanoparticles considerably improve this quantity. The coercivity the sintered Nd16.5Fe77B6.5 magnets has been enhanced about 40% by adding 3â¯wt% of the Dy-free compound of Nd40Cu30Al30.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Pham Thi Thanh, Nguyen Van Duong, Nguyen Hai Yen, Nguyen Huy Ngoc, Nguyen Mau Lam, Kieu Xuan Hau, Seong Cho Yu, Nguyen Huy Dan,