Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1475445 | Journal of the European Ceramic Society | 2012 | 7 Pages |
Abstract
The basic mechanisms of the current activated/assisted sintering (ECAS) of yttrium-doped zirconia's currently is a controversial issue. To gather more experimental data, we performed two-electrode-experiments (2EE) on staked spherical granules of cubic yttria-stabilised zirconia (YSZ) of diameters ranging from 10 to 100 μm. The observations were focused on the initial welding stage, under currents smaller than 4 A cm−2. The impedance spectroscopy appears to be a sensitive technique to detect the very early welding stage. FEG-SEM analysis reveals protrusion formations at the granule surfaces which are probable intermediate microstructures in the neck formation.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Anne Cordier, Michel Kleitz, Marlu César Steil,