Microstructure geometry for thermal barrier coatings to mitigate CMAS attack
US11725523B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 30, 2020 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Jun 19, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/514
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Thermal barrier coatings and methods to make such coatings present improved resistance to CMAS infiltration. The method for forming a thermal barrier coating includes applying a layer of the thermal barrier coating to a component having a surface, forming a plurality of first channels in the thermal barrier coating, and forming a plurality of second channels in the thermal barrier coating. The first channels extend through a thickness of the thermal barrier coating from an interface with the surface of the component to a free surface opposite the interface. The second channels are disposed between the free surface and the interface and extending lengthwise generally parallel to the free surface of the thermal barrier coating, wherein the thermal barrier coating comprises a material comprising yttrium aluminum garnet (YAG) or yttria stabilized zirconia (YSZ).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.