Process for producing an amorphous alloy ribbon

Details Process for producing an amorphous alloy ribbon Process for producing an amorphous alloy ribbon

C - Chemistry, Metallurgy

22

C

C22C 45/02 (2006.01) B22D 11/06 (2006.01) B22D 25/06 (2006.01)

Patent

CA 2130597

ABSTRACT A process for producing an amorphous alloy ribbon by the single roll method is disclosed, which comprises injecting through a slot disposed at a nozzle tip a molten alloy having the composition represented by the general formula: (Fe1-aMa)100-x-y-z-bCuxSiyBzM'b wherein M is Co and/or Ni, M' is at least one element selected from the group consisting of Nb, Mo, W and Ta, and a, x, y, z and b satisfy the relationships: 0?a?0.1, 0.5?x?2 (atomic %), 5?y?20 (atomic %), 5?z?11 (atomic %), 14?y+z?25 (atomic %) and 2?b?5 (atomic %), provided that the ratio of y to z (y/z) is in the range of 0.5?y/z?3, onto a cooling wheel comprising a Cu alloy containing Be in an amount of 0.05 to 3.0 % by weight. This process is advantageous in that the position of peel of the amorphous alloy ribbon formed on the cooling wheel can be controlled.

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