A Novel Approach to Developing Biomimetic ("Nacre‐Like") Metal‐Compliant‐Phase (Nickel–Alumina) Ceramics through Coextrusion. Issue 45 (30th September 2016)

• Record Type: Journal Article
• Authors: Wilkerson, Ryan P.; Gludovatz, Bernd; Watts, Jeremy; Tomsia, Antoni P.; Hilmas, Gregory E.; Ritchie, Robert O.
• Is Part Of: Advanced materials. Volume 28:Issue 45(2016)
• Page Start: 10061
• Page End: 10067
• Publication Date: 2016-09-30
• Subjects: bimimetics -- coextrusion -- fracture toughness -- strength -- structural ceramics; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201602471
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : Bioinspired "brick‐and‐mortar" alumina ceramics containing a nickel compliant phase are synthesized by coextrusion of alumina and nickel oxide. Results show that these structures are coarser yet exhibit exceptional resistance‐curve behavior with a fracture toughness three or more times higher than that of alumina, consistent with significant extrinsic toughening, from crack bridging and "brick" pull‐out, in the image of natural nacre.