|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Biological Materials Science
||Fabrication and Characterization of Bioinspired Alumina with a Bulk Metallic Glass Matrix
||Amy Wat, Jein Lee, Bernd Gludovatz, Eun Soo Park, Robert O. Ritchie
|On-Site Speaker (Planned)
Theoretical studies on bioinspired ceramic materials modelled on nacre (Begley, et al. 2012) have suggested that a metallic “mortar” would lead to higher strength and toughness than a polymer “mortar” if the strength of the mortar is lower than the fracture strength of the ceramic “bricks”. One challenge for producing a ceramic with a metallic matrix is that metals typically do not wet ceramics. To resolve this issue, a freeze-cast alumina scaffold was infiltrated with a Zr-based bulk metallic glass that reacts with the surface of the alumina to create an interfacial layer the metal wets. This study focuses on how the mechanical properties of the materials change due to the infiltration temperature and ceramic content to find the optimal processing conditions that utilizes the brick-and-mortar architecture. The results illustrate a trade-off between the fracture toughness and the flexural strength of the resulting materials.
||Planned: Supplemental Proceedings volume