Fe Based soft magnetic glassy alloy
AssigneesAlps Electric Co., Ltd., Akihisa Inoue, Japan Science and Technology Corporation
InventorsAkihisa Inoue, Takao Mizushima, Kouichi Fujita, Oki Yamaguchi, Akihiro Makino
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Abstract
The present invention is directed to provide a Fe based glassy alloy which exhibits soft magnetic characteristics at room temperature, has a thickness greater than that of a conventional amorphous alloy prepared by a liquid quenching process and can be easily formed in bulk. The Fe based glassy alloy in accordance with the present invention has a temperature distance .DELTA.T.sub.x, expressed by the equation .DELTA.T.sub.x =T.sub.x -T.sub.g, of a supercooled liquid of not less than 35.degree. C., wherein Tx indicates crystallization temperature and Tg represents glass transition temperature.
Claims1
An Fe based soft magnetic glassy alloy ribbon characterized in that:
- a temperature difference, .DELTA.T.sub.x =T.sub.x -T.sub.g, is 35.degree. C. or more, wherein T.sub.x represents the crystallization temperature of the glassy alloy;
- T.sub.g represents the glass transition temperature of the glassy alloy;
- resistivity of 1.5 .mu..OMEGA.m or more;
- a ribbon thickness in the range of 25 to 250 .mu.m;
- comprising:
- 0 to 10 atomic percent of Al,
- 0.5 to 4 atomic percent of Ga,
- 9 to 15 atomic percent of P,
- 5 to 7 atomic percent of C,
- 2 to 10 atomic percent of B,
- 4 to 10 atomic percent of Si, and
- Fe.
Dependencies are inferred from the claim text.