CPC C23C 4/18 (2013.01) [C04B 38/0074 (2013.01); C04B 41/0081 (2013.01); C23C 4/02 (2013.01); C23C 4/11 (2016.01); C23C 4/134 (2016.01)] | 20 Claims |
1. A method to produce cracks into a porous ceramic coating in order to increase a 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 an outer surface of the ceramic coating to form a sintered rim of the ceramic coating that defines the outer surface of the ceramic coating, and
force cooling in a final step the sintered rim and the ceramic coating to produce vertical cracks in the sintered rim.
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