| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7912075 | Scripta Materialia | 2016 | 4 Pages |
Abstract
The grain boundary diffusion process was applied to the commercial sintered Nd-Fe-B magnets using Pr68Cu32, Dy70Cu30 and Pr35Dy35Cu30 ribbons as direct diffusion source. The coercivities increased from 1114.4Â kA/m for the original magnet to 1642.8Â kA/m for the processed magnet by Pr68Cu32, higher than 1402.7Â kA/m by Dy70Cu30. Microstructural investigations showed that the evident coercivity enhancement for the sample by Pr68Cu32 was mainly attributed to continuous intergranular layers isolating Nd2Fe14B grains. Nevertheless, the coercivity enhancement of the sample by Dy70Cu30 was mainly resulted from the magnetic strengthening of the extensive layers in Nd2Fe14B grains.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Minghui Tang, Xiaoqian Bao, Kechao Lu, Lu Sun, Jiheng Li, Xuexu Gao,