Nanocrystalline ZrO2 Ceramics with Idealized Macropores
- SANTA CRUZ Hernan
- SPINO JOSE LUIS
- GRATHWOHL G.
DOIAbstract
Macroporous nanocrystalline 4 mol% yttria-stabilised zirconia ceramics were fabricated by a novel colloidal processing technique, using a commercially available nano-powder with modified surface and polymethylmethacrylate (PMMA) sacrificial templates as starting materials. Monolithic bodies obtained by gel-casting of nano-powder/PMMA-templates suspensions presented remarkably homogeneous microstructures after sintering characterized by grain size <200 nm, macropore diameter around 1 m, and closed porosity varying between 10 and 20%. The achieved microstructure highly resembles the high burn-up structure of highly irradiated light water reactor UO2 fuel, the properties of which are aimed to be assessed via the present model material. The sin...
Add to ORKG