| 摘要 |
PURPOSE:To provide a good power transmission characteristic from an initial period without requiring a pretreatment by mixing specific Co-based amorphous and Fe based amorphous alloy powders at a prescribed ratio and using the resulted powder mixture for a magnetic powder type power transmission device. CONSTITUTION:The soft magnetic metal powder to be used as a medium for this powder transmission is formed of the powder mixture composed of 5-95wt.% Co-based amorphous alloy powder and 5-95wt.% Fe-based amorphous alloy powder. The Co-based alloy powder is the scaly, planar or spherical powder having >=700Hv hardness, <=10 aspect ratio and 20-300mum major axis and has -10X10-6=+10X10<-6> magnetorestriction. The Fe-based alloy powder is the scaly, planar or spherical powder having >=700Hv hardness, <=10 aspect ratio, and 20-300mum major axis and has 2-20atomic% >=1 kinds among Co, Cr, Ni, Mo, and Nb and >=0.8T saturation magnetic flux density.
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