Thermal barrier coatings (TBCs) have been widely used to protect
the superalloy components from the hot gas stream in gas turbine
engines. Driven by the higher inlet temperature of modern gas
turbine engines for higher efficiency and less harmful gas
emission, exploration of TBC new materials and thermal radiation
effects of TBCs have recently attracted more attentions. This
research explored the potential application of gadolinium zirconate
as a promising new TBC material due to its lower thermal
conductivity, higher phase stability, and higher CMAS-resistance
than conventional YSZ material. The thermal cycling tests were
performed using a novel test rig which was designed to mimic the
complex working condition of TBCs, and the thermal radiation
properties were characterized in the wavelength range where turbine
engine thermal radiation is most concentrated. This book is
suitable for both beginners and professions in the field of TBCs,
as it covers both the brief introduction of TBC system, deposition
methods, recent development and the in-depth analysis of failure
mechanisms and different models to determine the coating absorption
and scattering coefficients.
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