Patent ID: 6919121
Filing Date: 2005-07-19
Classification: C23C,Y02T,Y10T

Abstract:
1. A component having a thermal barrier coating that had suffered localized spallation and was repaired by a method comprising the steps of: cleaning a surface area of the component without removing any adherent residual fragments of the thermal barrier coating exposed by the localized spallation; applying a ceramic paste on the surface area of the component exposed by the localized spallation, the ceramic paste comprising a ceramic powder in a binder, the ceramic powder comprising alumina and zirconia particles, the binder being chosen from the group consisting of ceramic precursor binders that thermally decompose to form a refractory material; and then heating the ceramic paste to thermally decompose the ceramic precursor binders and yield a repair coating that covers the surface area of the component and the adherent residual fragments on the surface area, the repair coating comprising the alumina and zirconia particles in a matrix that comprises the refractory material formed by thermally decomposing the ceramic precursor binders.