May 1, 2019 · The detailed Raman spectra of the tetragonal YSZs show six vibrational modes, as shown in Table 1 [25]. 3YSZ and 6YSZ shows the tetragonal phase with the Raman bands (147, 259, 321, 465, 609 and 639 cm −1) indicating tetragonal ZrO 2 while 8YSZ shows the active bands representative of cubic ZrO 2.

May 12, 2020 · The Raman peaks of metastable yttria-stabilized zirconia changed with annealing at high temperatures even before the onset of transformation to any monoclinic phase, leading to ambiguous determination of stress-free references.

Jan 1, 2024 · To understand the strong Raman scattering intensity of metastable t′-YSZ thermal barrier coatings, about three times than other phases of yttria doped zirconia, a careful investigation of high temperature phase is performed by …

The effect of yttria content on structural and thermal stability of zirconia in yttria-stabilized zirconia (YSZ) polycrystalline ceramics was systematically investigated by Raman spectroscopy and...

Apr 1, 2024 · Molybdenum matrix ceramic-metal (cermet) composites containing 40–70 vol% yttria stabilized zirconia (YSZ) particles (as a surrogate for ceramic fuel particles) were produced via spark plasma sintering (SPS) and exposed to flowing hydrogen at …

The crystallinity, morphological and optical properties of the YSZ nanoparticles were studied by using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron...

Mar 15, 2005 · The structural properties of polycrystalline yttria-stabilized zirconia (YSZ) have been studied using FT-Raman spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy (XPS). Yttria content was varied between 8 and 15% (by mole fraction) to determine compositional effects on YSZ phonon …

Jan 1, 1995 · The temperature dependence of Raman spectra of cubic yttria-stabilized zirconia (YSZ) for three yttria concentrations (10, 15, and 20 wt %) is investigated in the range 40–1470 K.

Sep 16, 2015 · Raman spectroscopic studies confirmed the outward diffusion of Ni from the adjacent Ni rich multilayer to YSZ top coat and the formation of NiO at the surface of the Ni-YSZ nanocomposite.

In this work, the evolution of the Raman bands of metastable YSZ with annealing for different times at different high temperatures were analyzed using the tetragonality variation, which was consequent on the cation redistribution activated by thermal diffusion.