Unusual high Bs for Fe-based amorphous powders produced by a gas-atomization technique
K. Yoshida,
M. Bito,
J. Kageyama,
Y. Shimizu,
M. Abe,
A. Makino
Affiliations
K. Yoshida
Sendai Research & Development Center, Alps Electric Co., Akedori 3-31, Izumi-ku, Sendai 981-3280, Japan and Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
M. Bito
Sendai Research & Development Center, Alps Electric Co., Akedori 3-31, Izumi-ku, Sendai 981-3280, Japan and Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
J. Kageyama
Sendai Research & Development Center, Alps Electric Co., Akedori 3-31, Izumi-ku, Sendai 981-3280, Japan and Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
Y. Shimizu
Sendai Research & Development Center, Alps Electric Co., Akedori 3-31, Izumi-ku, Sendai 981-3280, Japan and Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
M. Abe
Sendai Research & Development Center, Alps Electric Co., Akedori 3-31, Izumi-ku, Sendai 981-3280, Japan and Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
A. Makino
Sendai Research & Development Center, Alps Electric Co., Akedori 3-31, Izumi-ku, Sendai 981-3280, Japan and Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
Fe-based alloy powders with a high Fe content of about 81 at.% were produced by a gas-atomization technique. Powders of Fe81Si1.9B5.7P11.4 (at.%) alloy showed a good glass forming ability and exhibited unusual high saturation magnetic flux density of 1.57 T. The core-loss property at a frequency of 100 kHz for the compacted core made of the Fe81Si1.9B5.7P11.4 powder is evaluated to be less than 500 kW/m3 under a maximum induction of 100 mT. Moreover, good DC-superposition characteristic of the core was also confirmed. These results suggest that the present Fe-based alloy powder is promising for low-loss magnetic-core materials and expected to contribute in miniaturization of electric parts in the near future.
