Abstract
Diffusion induced precipitation along grain boundaries has been observed in Zn-coated NdFeB magnets. It was found that the volume diffusion of Zn through the matrix Nd2Fe14B grains is negligible. Zn penetrates into a thin outer layer of each Nd2Fe14B grain replacing Fe atoms in the Nd2Fe14B lattice and forming Nd-Fe-Zn (B) compounds. The displaced Fe moves to the boundaries, reacting with further Zn to produce Zn-Fe compounds. (C) 2002 Elsevier Science B.V. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 13-20 |
| Number of pages | 8 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 261 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 1 Apr 2003 |
Keywords
- tem
- diffusion
- grain boundaries
- Zn-coating
- NdFeB