화학공학소재연구정보센터
Journal of the American Ceramic Society, Vol.102, No.9, 5013-5019, 2019
Strong and tough ZrB2 materials using a heterogeneous ceramic-metal layered architecture
ZrB2-SiCw ceramic sheets produced by tape casting and tailored ductile Ti foil were alternatively stacked and sintered by spark plasma to synthesize a multi-layered ceramic. Following mechanical processing, a high flexural strength (621MPa) and fracture toughness (15.3MPam(1/2)) in uniaxial tension were achieved in comparison to laminated ceramics with a weak BN interlayer. Scanning and transmission electron microscopy revealed a characteristic macroscopic heterogeneous lamella as well as a three-tier microstructured interface, termed the L-T structure. This novel structure provides a new path for the development of ceramic/metal layered composites with superior mechanical properties in the near future.