一种迅速获得高磁热性能的La-Fe-Co-Si稀土磁制冷合金制备方法
By incorporating BN nanosheets into La-Fe-Co-Si alloys and utilizing selective laser melting and annealing, the problems of long heat treatment time and poor formability of La-Fe-Co-Si alloys were solved, and the efficient preparation of rare earth magnetic refrigeration alloys with high magnetocaloric performance was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENYANG LIGONG UNIV
- Filing Date
- 2025-06-16
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, La-Fe-Co-Si rare earth magnetic refrigeration alloys have long high-temperature heat treatment times, poor formability, and low mechanical properties, making them difficult to apply in large quantities.
Selective laser melting technology was used to incorporate BN nanosheets into La-Fe-Co-Si alloys. Combined with annealing and air cooling heat treatment, the formation of the magnetocaloric phase La(Fe,Co,Si)13 was promoted, the heat treatment time was shortened, and the mechanical strength and magnetocaloric properties were improved.
The annealing time of La-Fe-Co-Si alloy is significantly shortened to 10-20 minutes, improving magnetocaloric properties and mechanical strength, enhancing the alloy's formability, and making it suitable for magnetic refrigeration applications.
Smart Images
Figure CN120624875B_ABST