title: Thermal Conductivity Measurement of an Electron-Beam Physical-Vapor-Deposition Coating.
abstract: An industrial ceramic thermal-barrier coating designated PWA 266, processed by electron-beam physical-vapor deposition, was measured using a steady-state thermal conductivity technique. The thermal conductivity of the mass fraction 7 % yttria-stabilized zirconia coating was measured from 100 °C to 900 °C. Measurements on three thicknesses of coatings, 170 μm, 350 μm, and 510 μm resulted in thermal conductivity in the range from 1.5 W/(m·K) to 1.7 W/(m·K) with a combined relative standard uncertainty of 20 %. The thermal conductivity is not significantly dependent on temperature.
authors.affiliation: National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80303.
authors.forename: A J
authors.initials: AJ
authors.lastname: Slifka
authors.affiliation: National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80303.
authors.forename: B J
authors.initials: BJ
authors.lastname: Filla
keywords: EB-PVD; thermal barrier coating; thermal conductivity; yttria-stabilized zirconia