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摘要
Toroidal shape FeCuNbSiB nanocrystalline alloy powder cores were prepared by cold pressing using mechanically crushed and ball-milled powders, respectively. The morphologies and their effects on the magnetic properties of the compacted cores were investigated. Compared with ball-milled powders, mechanically crushed ones have more regular shapes and rounder edges, which lead to better inter-particle insulation. FeCuNbSiB nanocrystalline alloy powder cores fabricated from mechanically crushed powders exhibit remarkably lower core loss of about 248. 2 kW/m(3) at 100 kHz for maximum flux density B-m = 0. 1 T, and more stable permeability up to 10 MHz. Moreover, the dc-bias property could be improved significantly using mechanically crushed powders.
- 出版日期2014-3
- 单位钢铁研究总院
