Wide iron-based amorphous alloy thin strip, and method of...

Details Wide iron-based amorphous alloy thin strip, and method of... Wide iron-based amorphous alloy thin strip, and method of...

C - Chemistry, Metallurgy

22

C

C22C 45/02 (2006.01) C21D 8/02 (2006.01) H01F 1/153 (2006.01)

Patent

CA 2187498

A wide amorphous alloy thin strip having a width of 70 mm or above and useful as an iron core of electric power transformers, composed of Fe-Si-B-C amorphous alloy. Dispersion of an amorphous structure in the width direction is prevented and deterioration of the strip properties is suppressed by adding Mn or by casting in an atmosphere containing a carbonic acid gas in an amount of about 40 vol% or more to thereby control strip surface roughness to a center line average surface roughness of about 0.7 µm or less.

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