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COOLING AIR REQUIREMENT, PERCENT Figure 2. Thermal Barrier Coatings Improve Creep Life and Reduce High-Pressure Turbine Cooling Air Requirements.

This paper reviews the effects of processing on the resulting microstructure of PVD-stabilized zir-conia coatings. The strong influence between microstructure and ceramic coating durability in burner rig tests and engine mission environments is also discussed.

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