Application of functionally graded interlayer on reducing the residual stress discontinuities at interfaces within a plasma-sprayed thermal barrier coating

This paper was aimed to investigate the effect of the functionally graded interlayer on reducing the residual stress discontinuities at interfaces within a plasma-sprayed ZrO2Y2O3/NiCrAlY thermal barrier coating using an analytical model. Some effects on the residual stresses within the substrate and the coating, such as the gradient exponent, the material properties of ZrO2Y2O3 ceramic component, the elastic properties and the thickness of alloy substrate, were discussed.