Ionic conductivity of eutectic mullite-zirconia fibres
authors Carvalho R.G.; Figueiredo F.M.; Silva R.F.; Costa F.M.
nationality International
journal Proceedings of 2012 21st IEEE Int. Symp. on Applications of Ferroelectrics held jointly with 11th IEEE European Conference on the Applications of Polar Dielectrics and IEEE PFM, ISAF/ECAPD/PFM 2012
abstract Mullite-stabilized zirconia fibres were synthesized by the laser floating zone (LFZ) method. Fibres grown at 100 mm/h have fine-interpenetrating mullite-zirconia eutectic grains surrounded by an amorphous phase rich in Al, Y and Si. The crystalline phases identified by XRD are mullite with an orthorhombic crystal structure and zirconia polymorphs, occurring in the tetragonal and transformable monoclinic forms. The activation energy for the conductivity of these composites determined from Arrhenius plots between 600C and 800C is 1.16 eV. 2012 IEEE.
isbn 9,78147E+12
year published 2012
digital object identifier (doi) 10.1109/ISAF.2012.6297832
unique article identifier 2-s2.0-84867909509