| 摘要 |
PROBLEM TO BE SOLVED: To provide a base material for amorphous iron alloy with low Al content having neither linear flaw nor brittleness, even in case of using ferro- alloy having much Al content at low cost as a Nb source and a B source such as ferro-niobium, ferro-boron. SOLUTION: In a producing method of the base material for amorphous iron alloy, the constituting elements in the amorphous alloy and also, oxide of the constituting elements in the amorphous alloy, in which the absolute value of a standard formation free energy is smaller than that of Al2O3, are melted to obtain the base material having <=50 ppm Al content by removing the formed Al2O3. Further, in this producing method, the constituting elements in the amorphous alloy are melted to make molten metal, and thus, the formed Al2O3 is removed by blowing gas consisting essentially of oxygen into or on this molten metal.
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