Processing and Dielectric Properties of TiO
Abstract:Nanosized titanium dioxide (TiO2) powders (∼40 nm) were used for preparation of tape‐casting slurries. Effect of various solvents and dispersants on the dispersability of TiO2 slurries was studied by sedimentation tests and rheology measurements. TiO2 green tapes were prepared by tape‐casting method and densified at 1000°C with a sintered density >95%. Dielectric properties of TiO2 tapes were studied by measuring of dielectric constant, loss factor and dielectric breakdown strength (BDS) with respect to their microstructural development. BDS values as high as ∼1400 kV/cm were obtained for sintered tapes so that energy densities up to 14 J/cm3 could be achieved.
Document Type: Research Article
Affiliations: Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, Missouri 65401
Publication date: 2011-11-01