查看文章

The phase composition of plasma-sprayed yttria stabilized zirconia (YSZ), ZrO₂ with 8% by mass Y₂O₃, was studied using neutron and X-ray diffraction. Comparison shows that neutron diffraction is superior for analysis of the phase composition as well as for the analysis of the yttria content of the tetragonal phase. The presence of large amounts of the cubic phase is probably often neglected or underestimated in standard XRD analysis due to scattering-related limitations and the inherent difficulty of the analysis. The importance of this fact needs to be addressed in future studies. The amount of monoclinic, tetragonal, and cubic phases was determined using neutron Rietveld refinement for feedstock powders, as-sprayed deposits and for samples annealed for 1 h at temperatures of 1100, 1200, 1300, and 1400°C. The two studied feedstock materials were manufactured by different production methods, and contained …