Abstract
The slurry of ZrB2-Mo-Si-B have been prepared using the polyethylene glycol-800 (PEG800) and polyvinyl butyral (PVB) as dispersant and binder respectively. The effects of different additive concentration on the fluidity of the slurry were studied. When the amount of dispersant and binder were 0.2wt%, 4wt% and R value were 1.0, the slurry was most suitable for casting, and the green tape were smooth and flexible. ZrB2-Mo-Si-Blaminated structure ceramics have been successfully prepared by tape casting and hot-pressure sintering at 1900°C for 1h under a pressure of 30 MPa in argon gas. The highest flexural strength and fracture toughness of sintered samples at room temperature were 490±10 MPa and 7.73 ± 0.56 MPa·m1/2, respectively.
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