Nacre-like alumina is a class of bio-inspired ceramic composite manufactured by field-assisted sintering of green bodies made primarily of alumina platelets with an anisotropic microstructure. Here we investigate the addition of zirconia particles to enhance the mechanical properties of the composite. ...
Nacre-like alumina composites based on heteroaggregationdiv> High strength and high toughness are usually mutually exclusive in materials. Among all material classes, ceramics exhibit a high stiffness and strength, but they present a limited plastic deformation, which results in a moderate toughness. ...
Here, we report a processing route to create metal-coated oxide platelets that can be assembled into bulk nacre-like composites that combine enhanced fracture toughness with magnetically-responsive functionalities. This is achieved by utilizing metallic iron as the continuous phase between alumina platelet...
Asperities on the Surface of Plate-like Alumina and their Effect on Nacre-inspired Alumina-PMMA Composites Natural materials often have unique mechanical properties, such as the hierarchical structure of nacre formed through mineral bridges or asperities created between an inorganic particle and a natural...
To produce the smart nacre, the Diels–Alder network polymer was infiltrated into the densified alumina scaffold in its liquid precursor form followed by thermal curing. For better comparison, nacre-like composites with less ordered alumina platelets were prepared by the unidirectional freezing method10...
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 sho... RP Wilkerson,B ...
Two ceramic microstructures, a conventional alumina (Al2O3) and a nacre-like alumina (MAINa), are compared in terms of dynamic fragmentation under impact. The nacre-alumina ceramic is a BM material conferring improved toughening mechanisms. The cracking behaviour of both materials is investigated by...
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 sho... RP Wilkerson,B ...
Following the same idea of fabrication of biomimetic materials at macro scales, Mayer [39] developed a segmented nacre-like composite made of almost 90 %v/v of alumina tablets that are bonded with adhesive tapes (Figure 3.7b). This material shows toughness six times higher than that of ...
We describe here how nacre-like materials can be obtained by controlling the freezing of ceramic slurries followed by subsequent ice sublimation and sintering, leading to multilayered porous ceramic structures will homogeneous and welldefined architecture, which can be subsequently filled with a selected...