Amorphous iron based alloy and method of manufacture

摘要

Disclosed are an amorphous iron based alloy having excellent magnetic characteristics as well as bendability and a method of manufacturing the amorphous iron based alloy. The amorphous iron based alloy has a mean centerline Ra surface roughness of about 0.8 mu m or less and the formula FeXBYSiZMna in approximate proportions wherein: 75 </= X </= 82 at% 7 </= Y </= 15 at%, 7 </= Z </= 17 at%, and 0.2 </= a </= 0.5 at%. The method of manufacturing the amorphous iron based alloy comprises quenching and solidifying said molten alloy in a CO2 atmosphere containing H2 in an amount of about 1 - 4% by volume. <IMAGE>