Amorphous iron based alloy and method of manufacture
US5466304A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1994 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Nov 22, 2014 |
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: PA0 75.ltoreq.X.ltoreq.82 at % PA0 7.ltoreq.Y.ltoreq.15 at %, PA0 7.ltoreq.Z.ltoreq.17 at %, and PA0 0.2.ltoreq.a.ltoreq.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: PA0 75.ltoreq.X.ltoreq.82 at % PA0 7.ltoreq.Y.ltoreq.15 at %, PA0 7.ltoreq.Z.ltoreq.17 at %, and PA0 0.2.ltoreq.a.ltoreq.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.