Thermal conductivity of these magnetoplumbite-based oxide materials was also evaluated using steady-state laser heat flux test method.
The thermal conductivity of electron beam-physical vapor deposited (EB-PVD) ZrO2 8 wt.%Y2O3 thermal barrier coatings was determined by a steady-state laser heat flux technique.
The TBC with tailored microstructures were examined by various techniques including scanning electron microscopy (SEM), X-ray diffraction (XRD), steady-state laser heat flux technique, hemispherical reflectance and thermal cyclic oxidation tests.
When evaluated using a steady-state laser heat-flux technique under conditions ranging from room temperature to 1000 °C the materials demonstrated very low thermal conductivities (0.96 1.49 W m 1 K–1), especially Gd9.33(SiO4)6O2, which shows a value of 1.10 1.14 W m 1 K–1 in the measured temperature range.
For a small source of heat in an infinite homogenous medium, the steady-state laser-induced temperature increase outside the source decreases as the inverse of the distance to the source.
Samples have been cut at a variable angle with respect to the flakes plane and thermal conductivity has been measured by means of two standard techniques, namely, steady state technique and laser flash method.
The photochemical mechanisms are studied by steady state photolysis, fluorescence, cyclic voltammetry, laser flash photolysis and electron spin resonance spin-trapping techniques.
Time-resolved measurements were made by pumping the system at a steady state, then switching off the laser beam, and detecting how the PL signal at a fixed wavelength decreases as a function of time.
The model predicts multiple steady states for certain laser powers and scan speeds when the optical properties of the film are a nonlinear function of the fractional conversion in the film.
The photochemical properties as well as the chemical mechanisms associated with these catalysts are investigated by ESR spin-trapping, laser flash photolysis, steady state photolysis, cyclic voltammetry and luminescence experiments.
In the photochemistry of 1a, intervention of cyclobutylidene 8 is strongly supported by circumstantial evidences provided by steady-state and laser flash photolytic investigations.
