Method for improving magnesium oxide steel coatings
US4740251A · kind A · utility
4Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1986 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Dec 22, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/14783
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
This invention is directed to improved magnesium oxide slurries for use in coating silicon steels prior to high temperature annealing, comprising a calcination-modified magnesium oxide and water. Inorganic salts of barium, chromium, silicon, zinc or aluminum are added to magnesium hydroxide prior to calcination, resulting in a calcined magnesium oxide product having improved properties. This invention is also directed to an improved process for coating silicon steel, using the above described improved magnesium oxide product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.