Microstructure and mechanical properties of ZrB₂-based composites with laminated structure
by Chang-An Wang, Hailong Wang, Lei Yu, Yong Huang
International Journal of Materials and Product Technology (IJMPT), Vol. 37, No. 3/4, 2010

Abstract: Laminated ZrB₂/SiC ceramic composites were fabricated through roll-compaction and hot-pressing. To improve the densification of SiC interlayers, a small amount of B and C were added into SiC interlayers. The results showed that the addition of B and C was beneficial to the densification of SiC layers and could avoid cracking from interlayers. The laminated composites showed the highest bending strength and nominal fracture toughness of 288 ± 32 MPa and 9.73 ± 0.43 Mpa m^1/2, respectively. The laminated structure mainly contributed to high toughness of the laminated ZrB₂/SiC composites through crack deflection along the interfacial layer repeatedly.

Online publication date: Wed, 03-Feb-2010

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