Strong and tough ZrB 2 materials using a heterogeneous ceramic–metal layered architecture

ZrB 2 ‐SiC w 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 (621 MPa) and fracture toughness (15.3 MPa·m 1/2 ) in uniaxial te...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2019-09, Vol.102 (9), p.5013-5019
Main Authors: Bai, Yuhang, Ma, Yiyuan, Sun, Mengyong, Fan, Shangwu, Cheng, Laifei
Format: Article
Language:English
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Summary:ZrB 2 ‐SiC w 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 (621 MPa) and fracture toughness (15.3 MPa·m 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.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.16424