Preparation of B4C-ZrB2  Laminated Composites by Non-Aqueous Tape Casting and Hot-Press Sintering

Wei Liang Liu; Z.T. Shi; Yang Cheng Li; Zhao Liang Xu

doi:10.4028/www.scientific.net/KEM.697.494

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 697Preparation of B4C-ZrB2 Laminated Composites by...

Preparation of B₄C-ZrB₂ Laminated Composites by Non-Aqueous Tape Casting and Hot-Press Sintering

Abstract:

B₄C and ZrB₂ ceramic tapes were prepared by non-aqueous tape casting with B₄C and ZrB₂ as main materials, xylene and n-butanol as binary solvent, castor oil as dispersant, polyvinyl butyral (PVB) as binder and dioctyl phthalate (DOP) as plasticizer. B₄C-ZrB₂ laminated composites were prepared by cutting, laminating, dumping and hot-press sintering. The experiment results indicated that ZrB₂ ceramic tapes with high solid content of 48 wt.% could be prepared with 0.8 wt.% castor oil, 3.4 wt.% PVB and 6.8 wt.% DOP. Ceramic tapes have smooth surface, no crack and good ductility. B₄C-ZrB₂ laminated composites with high relative density of 97.8% were prepared by hot-press sintering under 2020°C sintering temperature, 30MPa pressure, 35 min hold temperature and pressure time. Their bending strength and fracture toughness were 488.6 MPa and 5.85 MPa·m^1/2 respectively.

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Periodical:

Key Engineering Materials (Volume 697)

Pages:

494-497

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.697.494

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Online since:

July 2016

Authors:

Wei Liang Liu*, Z.T. Shi, Yang Cheng Li, Zhao Liang Xu

Keywords:

B₄C-ZrB₂ Ceramic Tapes, Laminated Composites, Non-Aqueous Tape Casting

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