Fe基バルク金属ガラスの作製と磁気特性

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This paper reviews our recent results on the formation and soft magnetic properties of bulk Fe_<70>AL_5Ga_2P_<9.65>C_<5.75>B_<4.6>Si_3 amorphous alloys prepared by copper mold casting and consolidating amorphous alloy powder. The cast sample with the shape of φ10×φ6×1^t consists only of a single amorphous phase, and has more excellent soft magnetic properties than the corresponding melt-spun ribbon. On the other hand, the disk shape sample with φ18×1^t prepared by sintering in the temperature range of the supercooled liquid region also consists only of a single amorphouse phase and has good soft magnetic properties. It is presumed that the good soft magnetic properties of these bulk amorphous samples are due to their high structural homogeneity and high workability based on the large glass-forming ability caused by the appearance of a supercooled liquid region below the crystallization temperature.
社団法人日本磁気学会の論文
2000-04-01