Method of forming an insulating film on a grain-oriented silicon steel sheet
US4242155A · kind A · utility
8Cited by
7References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1979 |
| Grant date | Dec 30, 1980 |
| Priority date | — |
| Expiry date | Apr 23, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23D5/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A highly adhesive and uniform insulating film can be formed on a grain-oriented silicon steel sheet without deteriorating the iron loss of the steel sheet by the use of a magnesia series annealing separator containing a strontium compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.