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Thermal Conductivity Imaging of Thermal Barrier Coatings
Author(s) -
Zheng X.,
Cahill D. G.,
Zhao J.C.
Publication year - 2005
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200500024
Subject(s) - thermal barrier coating , materials science , thermal conductivity , yttria stabilized zirconia , thermal conduction , isotropy , thermal , composite material , coating , cubic zirconia , optics , thermodynamics , ceramic , physics
Thermal conductivity images of thermal barrier coatings are measured using time‐domain thermoreflectance at a single delay time with micron‐scale resolution. We find that the thermal conductivity of electron‐beam physical vapor deposited 8 wt% yttria‐stablized zirconia coatings for heat flow along both the through‐thickness and in‐plane directions is isotropic and uniform throughout the depth of the coating.