Abstract
The soft magnetic properties of the nanocrystalline Fe-Zr-Nb-B alloys, which are mixed Fe-Zr-B alloy with negative magnetostricton and Fe-Nb-B alloy with positive one, have been investigated. The magnetostricton and the grain size of the Fe-Zr-Nb-B alloys show intermediate values between those of the Fe-Zr-B and Fe-Nb-B alloys. The soft magnetic properties are strongly affected by Zr + Nb amount and Zr/Nb ratio. The best soft magnetic properties have been obtained for the Fe85.5Zr2Nb4B8.5 alloy. The alloy shows a high permeability of 60 000 at 1 kHz, a high saturation magnetic flux density of 1.64 T and zero-magnetostriction, simultaneously. The alloy also exhibits a very low core loss of 0.09 W/kg at 1.4 T and 50 Hz, which is extremely lower than that of Fe-Si-B amorphous, and good thermal stability of the core loss. The nanocrystalline Fe-Zr-Nb-B alloy is therefore suitable for a core material for pole transformers.
| Original language | English |
|---|---|
| Pages (from-to) | 1083-1086 |
| Number of pages | 4 |
| Journal | Materials Science and Engineering A |
| Volume | 304-306 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 2001 May 31 |
| Externally published | Yes |
Keywords
- Core loss
- Crystallization
- Melt-spun ribbon
- Nanocrystalline alloy
- Permeability
- Saturation magnetic flux density
- Soft magnetic properties
- Thermal stability
- Zero-magnetostriction
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering