Abstract
The rheological behaviors of the ZrO2/Al2O3 (ZTA) suspension were investigated using three kinds of Al2O3 with different particle morphology. ZrO2/Al2O3 green bodies and ceramics were prepared by using a low-toxicity monomer N, N-dimethyl acrylamide (DMAA) as gelling agent. The effect of dispersant dosage, milling time and solid loading on the rheological properties of suspension were discussed. Tabular Al2O3 powders have good effect on decreasing viscosity of slurries and clubbed Al2O3 powders are good for flexural strength of green bodies. The particles in ZrO2/Al2O3 green bodies are combined closely and their bending strength can reach 21.45, 19.87, 25.90 MPa, respectively. Granular Al2O3 powders are beneficial properties of sintered ceramics, and the mean bending strength and fracture toughness of sintered ceramics are 680 MPa and 7.49 MPa·m1/2, 453.1 MPa and 6.8 MPa·m1/2, 549.4 MPa and 6.34 MPa·m1/2.
Original language | English |
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Pages (from-to) | 416-422 |
Number of pages | 7 |
Journal | Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica |
Volume | 31 |
Issue number | 2 |
State | Published - Apr 2014 |
Keywords
- Gelcasting
- Particle morphology
- Viscosity