压粉磁芯制备英文文献.pdf

SCIENCE CHINA Technological Sciences • RESEARCH PAPER • May 2010 Vol.53 No.5: 1290–1293 doi: 10.1007/s11431-010-0055-y Novel Fe-based amorphous magnetic powder cores with ultra-low core losses ZHANG Liang1,2, LI DeRen1,2*, LU ZhiChao1,2, LU CaoWei1,2, LIU TianCheng1,2, 2 1 2 1,2 GUO Feng , LIU KaiHuang , WANG Jun ZHOU ShaoXiong 1 Central Iron and Steel Research Institute, Beijing 100081, China; 2 Advanced Technology and Materials Co., Ltd., Beijing 100081, China Received September 3, 2009; accepted September 20, 2009; published online April 15, 2010 Amorphous magnetic alloy powders were prepared from bulk metallic glasses Fe Cr Mo Sn P Si B C with supercooled liq- 74 2 2 2 10 4 4 2 uid region of 32 K by water atomization. Amorphous magnetic powder core precursor was produced from a mixture of the amorphous alloy powder with addition of insulation and bonding materials by mold compacting at room temperature. After annealing the core precursor, the amorphous magnetic core exhibits superior magnetic properties as compared with molyper- malloy powder core. The initial permeability up to 1 MH