FE-BASED AMORPHOUS ALLOY RIBBON FOR FE- BASED NANOCRYSTALLINE ALLOY, AND METHOD FOR MANUFACTURING THE SAME
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United States of America Patent
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Dec 3, 2020
app pub date -
Mar 28, 2018
filing date -
Mar 31, 2017
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Abstract
One embodiment of the present invention provides an Fe-based amorphous alloy ribbon for an Fe-based nanocrystalline alloy, the Fe-based amorphous alloy ribbon being a cooled body of a molten metal that has been applied to a surface of a chill roll, wherein the Fe-based amorphous alloy ribbon includes a recess having a depth of 1 μm or more in a 0.647 mm×0.647 mm region located in a central part, in the ribbon width direction, of a ribbon surface, which is a cooled surface, in which a maximum area of the recess having a depth of 1 μm or more is 3000 μm2 or less; and a method of manufacturing the same.
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