Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5440438 | Journal of the European Ceramic Society | 2017 | 9 Pages |
Abstract
The possibility to fabricate nanoceramic materials by techniques based on colloidal processing requires the use of effectively working deflocculants (dispersing agents) which are able to stabilize and decrease the viscosity of aqueous nanopowders suspensions. Galacturonic and lactobionic acids have been used in the research as deffloculants for nanoalumina; they allowed to obtain ceramic suspensions of high solid loading (50 vol%) and relatively low viscosity (ca. 4 Pa s at a shear rate 10 sâ1). High solid loading could be achieved through combining three factors: the application of sugar acids as deflocculants, water leaching of the nanopowders from the surface impurities and precise defoaming of the slurries. Density of sintered bodies equalled 98% TD.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Paulina Wiecinska, Anna Wieclaw, Filip Bilski,