Grain-oriented silicon steel sheet and process for production thereof
US6475304B2 · kind B2 · utility
3Cited by
6References
4Claims
0Family size
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Key dates
| Filing date | Jul 18, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Jul 18, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/1283
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Grain-oriented silicon steel sheet with Bi as an auxiliary inhibitor and a forsterite coating film having a Cr spinel oxide subscale of FeCr2O4 or FexMn1-xCr2O4 (0.6≦x≦1), made from a steel slab containing 0.005-0.20 wt % of Bi and 0.1-1.0 wt % of Cr.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.