High-strength ceramics through colloidal control to remove defects

Potato starch consolidation of aqueous HA suspension

“…The total solid loading (HA and potato starch) of all suspensions was kept constant at 59 vol.%. Taking into consideration that the density of potato starch is ∼1.45 g/cm 3 , which is much lower than that of hydroxyapatite of 3.156 g/cm 3 . The adjustment of the solid loading was achieved via the addition of predetermined amounts of distilled water during the addition of potato starch to the HA suspension.…”

“…Among these techniques, colloidal processing of the advanced ceramics has received an increased amount of attention [3]. The attention is not only for the improved microstructural control and homogeneity that is achievable through this approach, but also for its potential to apply some emerging approaches or innovative concepts of processing [4][5][6].…”

Barium strontium titanate dielectric helical resonators

“…7 The dough, incorporating the BST powder, polymer binder and solvent mixed and de-agglomerated on a twin-roll mill, was extruded through a circular die to form a flexible wire. The wire was wound onto a former of the appropriate diameter to form a helix, and then dried at room temperature to harden the dough and fix the shape of the helix.…”

A comparative study of viscous polymer processed ceramics based on aqueous and non-aqueous binder systems

“…More recently, it has also been used to fabricate structural and functional ceramics which exhibited excellent mechanical properties and improved electrical properties (Alford et al, 1987;Su et al, 2001a). The VPP technique utilises a strong shear stress within a viscoelastic ceramic/polymer paste to deagglomerate the starting powders and to facilitate the forming of ceramic green bodies.…”