一种易面型Sm2(Fe1-xMnx)14B合金粉末及其制备方法和应用
The preparation of easily shaped Sm2(Fe1-xMnx)14B alloy powder by reduction diffusion method solves the problem of limited temperature range of magnetic refrigeration materials, achieves wide-temperature cooling effect and high-efficiency refrigeration, and has advantages in industrial production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- LANZHOU UNIV
- Filing Date
- 2023-06-02
- Publication Date
- 2026-07-17
AI Technical Summary
Existing magnetic refrigeration materials have limited application range in temperature, exhibiting large magnetic entropy only near a fixed phase transition temperature, and the preparation process and application of the easy-faceted Sm2(Fe1-xMnx)14B compound have not been reported.
Easy-faceted Sm2(Fe1-xMnx)14B alloy powder was prepared by reduction diffusion method. The Mn doping amount was controlled to regulate the Curie temperature through mixing, pressing, high-temperature reduction and high-temperature alloying steps, so as to achieve a cooling effect over a wide temperature range.
The prepared Sm2(Fe1-xMnx)14B alloy powder has a cooling effect in the range of 339℃ to -40℃, providing an energy efficiency improvement of about 30% in room temperature cooling compared with traditional materials. It is also environmentally friendly, low in cost, and suitable for mass production.
Smart Images
Figure CN116673483B_ABST