Microstructure geometry for thermal barrier coatings to mitigate CMAS attack

Patent · Tue Aug 15 04:00:00 EDT 2023

OSTI ID:2222109

Jordan, Eric; Kumar, Rishi

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).

• Research Organization: Univ. of Connecticut, Farmington, CT (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: SC0007544
• Assignee: University of Connecticut (Farmington, CT)
• Patent Number(s): 11,725,523
• Application Number: 17/085,105
• OSTI ID: 2222109
• Country of Publication: United States
• Language: English