Amorphous alloy ribbon

Abstract

The invention provides an amorphous alloy ribbon consisting of Fe, Si, B, C, and unavoidable impurities, in which a content of Si is from 8.5 atom % to 9.5 atom %, and a content of B is from 10.0 atom % to less than 12.0 atom % when a total content of Fe, Si, and B is 100.0 atom %, a content of C relative to the total content of 100.0 atom % is from 0.2 atom % to 0.6 atom %, and the ribbon has a thickness of from 10 μm to 40 μm and a width of from 100 mm to 300 mm.

1 . An amorphous alloy ribbon consisting of Fe, Si, B, C, and unavoidable impurities, wherein:
 a content of Si is from 8.5 atom % to 9.5 atom %, and a content of B is from 10.0 atom % to less than 12.0 atom % when a total content of Fe, Si, and B is 100.0 atom %,
 a content of C relative to the total content of 100.0 atom % is from 0.2 atom % to 0.6 atom %, and 
 the ribbon has a thickness of from 10 μm to 40 μm and a width of from 100 mm to 300 mm. 
   
     
     
         2 . The amorphous alloy ribbon according to  claim 1 , wherein the content of C is from 0.3 atom % to 0.6 atom %. 
     
     
         3 . The amorphous alloy ribbon according to  claim 1 , wherein the content of B is from 10.0 atom % to 11.5 atom %. 
     
     
         4 . The amorphous alloy ribbon according to  claim 1 , wherein a space factor is 88% or more. 
     
     
         5 . The amorphous alloy ribbon according to  claim 1 , wherein a content of Fe is from 79.0 atom % to 80.0 atom %, a content of Si is from 8.5 atom % to 9.5 atom %, and a content of B is from 10.5 atom % to 11.5 atom % when a total content of Fe, Si, and B is 100.0 atom %. 
     
     
         6 . The amorphous alloy ribbon according to  claim 1 , which is produced by a single-roll method.