Mold coating
US6702886B2 · kind B2 · utility
7Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2002 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Nov 20, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2237/72
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A coating for a mold surface of a casting mold includes a metallic bond coat bonded to the mold surface and having a continuous, uniform thickness of between about 0.002 to 0.005 inch on the mold surface. A topcoat of yttria stabilized zirconia is located on top of the metallic bond coat and has a continuous, uniform thickness of between about 0.005 to 0.030 inch. The topcoat has a porosity between 5-15%. The topcoat has a surface layer having a thickness of between about 0.001 to 0.002 inch and a porosity of less than 1%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.