High strength, ductile, Co-Fe-C soft magnetic alloy
US5741374A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 1997 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | May 14, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/147
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A magnetically soft, Co--Fe--C alloy is disclosed which contains in weight percent, about ______________________________________ Carbon 0.05-0.50 Manganese 0.5 max. Silicon 0.5 max. Phosphorus 0.01 max. Sulfur 0.01 max. Chrominum 1.0 max. Nickel 1.0 max. Molybdenum 0.25 max. Cobalt 14-28 Vanadium 0.1 max. Niobium 0.1 max. Tungsten 0.1 max. ______________________________________ and the balance is essentially iron. The alloy provides a yield strength of up to about 580 MPa (84 ksi) while maintaining ductility and magnetic induction comparable to the known 27Co--Fe soft magnetic alloy. Magnetic and mechanical properties are developed through an annealing heat treatment which is performed after the alloy has been mechanically worked and machined to final shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.