Fast firing of bismuth doped yttria-stabilized zirconia for enhanced densification and ionic conductivity

Effect of Bismuth Oxide on the Microstructure and Electrical Conductivity of Yttria Stabilized Zirconia

Bismuth oxide (Bi2O3)-doped yttria-stabilized zirconia (YSZ) were prepared via the solid state reaction method. X-ray diffraction and electron diffraction spectroscopy results indicate that doping with 2 mol% Bi2O3 and adding 10 mol% yttria result in a stable zirconia cubic phase. Adding Bi2O3 as a dopant increases the density of zirconia to above 96%, while reducing its normal sintering temper...

Morphology and thermal conductivity of yttria-stabilized zirconia coatings

An electron beam directed vapor deposition method was used to grow 7 wt.% Y2O3–ZrO2 (7YSZ) coatings and the effects of substrate rotation upon the coating porosity, morphology, texture, and thermal conductivity were explored. As the rotation rate was increased, the texture changed from Æ111æ to Æ100æ. Under stationary deposition, the coatings were composed of straight columns, while low-frequen...

Defect structure of yttria-stabilized zirconia and its influence on the ionic conductivity at elevated temperatures

The defect structure of cubic fluorite structured yttria-stabilized zirconia (ZrO2)12x(Y2O3)x has been investigated over the composition range 0.100(4)<x<0.241(10) and temperatures T(K) up to 2780~10! K, using single-crystal specimens. Analysis of neutron and x-ray diffraction data, including both Bragg and coherent diffuse scattering components, has identified three principal types of defects ...

Ionic conductivity and thermal stability of magnetron-sputtered nanocrystalline yttria- stabilized zirconia

Ionic conductivity of nanocrystalline yttria-stabilized zirconia: Grain boundary and size effects

O. J. Durá,1 M. A. López de la Torre,1 L. Vázquez,2 J. Chaboy,3 R. Boada,3 A. Rivera-Calzada,4 J. Santamaria,4 and C. Leon4 1Departamento de Física Aplicada and INEI, Universidad de Castilla-la Mancha, 13071 Ciudad Real, Spain 2Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain 3Instituto de Ciencia de Materiales de Aragón, Consejo Superior de Investigaciones C...