Temperature stable protective coating over a metallic substrate surface
US6720087B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2002 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Jul 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12944
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention describes a temperature-stable protective coating over a metallic substrate surface (1), which coating includes at least one layer of material (4) consisting of MCrAlY, where M represents at least one of the elements selected from the group of materials consisting of Fe, Co and Ni. The invention also describes a production process for this coating. The invention is distinguished by the fact that a multiplicity of local elevations, known as rivets (3), are provided distributed directly over the area of the substrate surface (1) or distributed indirectly over the area of the substrate surface, separated from the substrate surface (1) by means of at least one interlayer (2), which rivets are fixedly joined to the substrate surface (1) or the interlayer (2), that at least one layer of material (4) consisting of MCrAlY is deposited on the substrate surface (1) or interlayer (2) in such a manner that the layer of material (4) consisting of MCrAlY completely surrounds the rivets (3), completely fills regions which lie between adjacent rivets (3) and projects above the rivets (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.