Abstract
We have prepared Nd2Fe14B/Fe3B bulk nanocomposite magnets at the compositions Nd4Fe77.5B 18.5-xMx (M=Si, C) by substituting other elements M for B. For the sample substituted with 1 at.%Si, the coercivity exhibits the highest value of 227 kA/m when sintered at 600 °C. In addition, the grain sizes of the Nd2Fe14B and the Fe3B phases are found to depend on the ramp-up time during sintering and the reduction of the grain size leads to an increase of the coercivity. On the other hand, the samples substituted with C exhibit soft magnetic behaviors, which is attributed to the suppression of the Nd2Fe14B hard phase.
Original language | English |
---|---|
Pages (from-to) | 92-98 |
Number of pages | 7 |
Journal | Materials Research Society Symposium Proceedings |
Volume | 1032 |
Publication status | Published - 2008 |
Event | Nanoscale Magnetic Materials and Applications - Boston, MA, United States Duration: 2007 Nov 26 → 2007 Nov 30 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering