软磁性粉末、压粉磁芯、磁性元件以及电子设备
By using soft magnetic powder particles with specific composition and structural design, the problems of magnetic permeability and iron loss at high frequencies are solved, achieving efficient electromagnetic conversion and low coercivity, which is suitable for pressed magnetic cores and magnetic components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SEIKO EPSON CORP
- Filing Date
- 2023-01-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing soft magnetic powders are difficult to achieve stable and excellent soft magnetic properties and high electromagnetic conversion efficiency at high frequencies, and the permeability and loss (iron loss) at high frequencies need to be improved.
The soft magnetic powder particles with a specific composition, including Fe-Si crystals, Cu segregation and grain boundaries, are used to ensure the proportion of grain content and Cu segregation, and the uniformity of particle size distribution. Through heat treatment, fine and uniform grains are formed, which improves magnetic permeability and reduces coercivity.
A powder-pressed magnetic core with high permeability and low iron loss at high frequencies has been achieved, improving electromagnetic conversion efficiency and DC superposition characteristics.
Smart Images
Figure CN116504480B_ABST