Soft magnetic alloy for clock-making
US7195680B2 · kind B2 · utility
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4References
7Claims
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Key dates
| Filing date | Feb 14, 2003 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Nov 12, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/14708
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a soft magnetic alloy with the following composition in wt. %: 28%≦Ni≦34%, 0%≦Co≦4%, 0%≦Cu≦4%, 1%≦Cr, 0%≦Mo≦8%, 0%≦Nb≦1%, 0%≦Mn≦2%, 0%≦V≦5%, 0%≦W≦5%, 0%≦Si≦4%, 0%≦Al≦4%, 0%≦C≦0.4%, optionally one or several elements selected from magnesium and calcium the content of which is such as to remain below 0.1%, the rest being iron and impurities from production. The chemical composition furthermore satisfies the following relationships: 180.5≦6×Ni2.5×(Cr+Mo+V+W+Si+Al)+4×(Co+Cu)≦197.5 et Co+Cu≦4%. The invention relates to the use thereof for production of a stator for use in a motor for clock-making.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.