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Evolution of Microstructure and Magnetic Properties of Isotropic Alnico 8 Ribbons with Various Ti Contents.
- Source :
-
Journal of Superconductivity & Novel Magnetism . Apr2024, Vol. 37 Issue 4, p791-798. 8p. - Publication Year :
- 2024
-
Abstract
- Optimizing the spinodal decomposition structure in Alnico magnets is a very effective way to improve the performance. Some elemental additives are extremely sensitive to the spinodal decomposition process. In this manuscript, the evolution of spinodal decomposition structure in isotropic Alnico 8 ribbons with various Ti contents and its effects on magnetic properties and service performance are investigated. Alnico 8 ribbons with nominal composition of different Ti content (3.5 wt%-7.5 wt%) were prepared by melt-spinning and simplified heat treatment. The optimum magnetic properties of the ribbons such as intrinsic coercivity, Hcj=860 Oe, remanence magnetization, Br =5.89 kGs, and maximum magnetic energy product, (BH)max=1.2 MGOe are obtained for 5.5 wt% Ti. The ribbons show excellent temperature stability, their magnetic properties are 100% reversible up to 800 K and can be maintained above 85% at 800 K. The increase of Ti decreases the Curie temperature of the ribbons slightly. The evolution of spinodal decomposition phases and its influence mechanisms on magnetic properties are studied. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15571939
- Volume :
- 37
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Journal of Superconductivity & Novel Magnetism
- Publication Type :
- Academic Journal
- Accession number :
- 176996130
- Full Text :
- https://doi.org/10.1007/s10948-024-06718-5