A Novel Approach to Developing Biomimetic ("Nacre-Like") Metal-Compliant-Phase (Nickel-Alumina) Ceramics through Coextrusion
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.
R. P. Wilkerson et al., "A Novel Approach to Developing Biomimetic ("Nacre-Like") Metal-Compliant-Phase (Nickel-Alumina) Ceramics through Coextrusion," Advanced Materials, vol. 28, no. 45, pp. 10061-10067, Wiley-VCH Verlag, Dec 2016.
The definitive version is available at http://dx.doi.org/10.1002/adma.201602471
Materials Science and Engineering
Keywords and Phrases
bimimetics; coextrusion; fracture toughness; strength; structural ceramics
International Standard Serial Number (ISSN)
Article - Journal
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