Turbine superalloy component defect repair with low-temperature curing resin
Voids, cracks or other similar defects in substrates of thermal barrier coated superalloy components, such as turbine blades or vanes, are filled with resin, without need to remove substrate material surrounding the void by grinding or other processes. The resin is cured at a temperature under 200° C., eliminating the need for post void-filling heat treatment. The void-filled substrate and resin are then coated with a thermal barrier coating.
1. A turbine superalloy component, comprising:
a superalloy material turbine vane or blade temperature, resistant up to approximately 1100 degrees Celsius temperature, with a substrate surface having a void;
particle-filled, hardened and cured resin layer filling the void, the resin curable under 200 degrees Celsius temperature, and temperature resistant up to approximately 1100 degrees Celsius temperature;
a bond coat layer on the substrate surface and resin layer; and
a thermal barrier coating on the bond coat and resin layer;
sequential layers of the respective resin, bond coat, and thermal barrier coating remaining intact when exposed to turbine operating temperature up to approximately 1100 degrees Celsius.
2. The component of claim 1 , comprising an industrial gas turbine engine turbine section blade or vane.
3. The component of claim 1 , the resin selected from the group consisting of metallic-filled resin and ceramic-filled resin.
4. The component of claim 1 , the resin comprising metallic and ceramic-filled resin.
5. The component of claim 1 , the void comprising a surface defect remaining in the substrate filled with the resin.