Thermal conductivity of a zirconia thermal barrier coating

摘要

The conductivity of a thermal-barrier coating composed of atmospheric plasma sprayed 8 masspercent yttria partially stabilized zirconia has been measured. This coating was sprayed on a substrateof 410 stainless steel. An absolute, steady-state measurement method was used to measure thermalconductivity from 400 to 800K. The thermal conductivity of the coating is 0.62 W/(m.K). Thismeasurement has shown to be temperature independent.