Thermoelastic Characteristics in Thermal Barrier Coatings with a Graded Layer between the Top and Bond Coats

Table 1

Mechanical and thermal properties used in this study for analyzing thermoelastic characteristics.

Material/property	Elastic module (GPa)	Poisson’s ratio	Thermal expansion coefficient; (10^−6/°C)	Thermal conductivity; (W/m °C)
Top coat*; (8 wt% Y2O3 doped ZrO2)	100	0.2	9.5 (20–1300°C)	2.0
Bond coat; (AMDRY 995C)	200	0.3	14	11
Substrate; (NIMONIC 263)	221	0.3	11.1 (20–100°C)	11.7

*Properties of the top coat prepared using an air plasma spray with METCO 204 NS-G powder.