Back to results
US 2021/0340677 A1Published application
A method to increase the thermal stress capability of a porous ceramic coating and a layer system
AssigneeSiemens Energy Global GmbH & Co. KG
InventorsPeter Stuart Hollingsworth, Alexandr Sadovoy, Dimitrios Zois
Life of this patent
Estimating the term…
Abstract
A method to increase the thermal stress capability of a porous TBC and layer system. Due to a post treatment step to a pose TBC coating cracks are produced inside the post TBC advantages manner to increase the thermal stress capability of the ceramic coating by only heating the surface of the ceramic coating.
Claims22
A method to produce cracks into a porous ceramic coating in order to increase the thermal stress capability of the ceramic coating, the method comprising:
- coating or providing a component with a porous ceramic coating, wherein the ceramic coating shows no or almost no vertical microcracks, wherein the component comprises a substrate and a bond coat, and the ceramic coating is on the bond coat,
- heating up in a first step the surface of the ceramic coating to sinter the ceramic coating at the surface so that vertical cracks are produced starting from a surface rim,
- force cooling in a final step the sintered rim and the coating.
Dependencies are inferred from the claim text.