Amorphous iron based alloy and method of manufacture
US5522947A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1995 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Apr 24, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C45/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
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 Fe.sub.X B.sub.Y Si.sub.Z Mn.sub.a 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 a molten alloy having the formula Fe.sub.X B.sub.Y Si.sub.Z Mn.sub.a in approximate proportions wherein: 75<X<82 at % 7<Y<15 at %, 7<Z<17 at %, and 0.2<a<0.5 at %, and effecting the quenching and solidifying steps in a Co.sub.2. atmosphere containing H.sub.2 in an amount of about 1-4% by volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.