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Publisher DOI: 10.1038/srep02322
Title: A novel method for a multi-level hierarchical composite with brick-and-mortar structure
Language: English
Authors: Brandt, Kristina 
Wolff, Michael F. H. 
Salikov, Vitalij 
Heinrich, Stefan 
Schneider, Gerold A. 
Keywords: Bioinspired materials;Characterization and analytical techniques;Design, synthesis and processing;Organic–inorganic nanostructures
Issue Date: 31-Jul-2013
Publisher: Nature Publishing Group
Source: Scientific Reports 3, Article number: 2322 (2013)
Journal or Series Name: Scientific reports 
Abstract (english): The fascination for hierarchically structured hard tissues such as enamel or nacre arises from their unique structure-properties-relationship. During the last decades this numerously motivated the synthesis of composites, mimicking the brick-and-mortar structure of nacre. However, there is still a lack in synthetic engineering materials displaying a true hierarchical structure. Here, we present a novel multi-step processing route for anisotropic 2-level hierarchical composites by combining different coating techniques on different length scales. It comprises polymer-encapsulated ceramic particles as building blocks for the first level, followed by spouted bed spray granulation for a second level, and finally directional hot pressing to anisotropically consolidate the composite. The microstructure achieved reveals a brick-and-mortar hierarchical structure with distinct, however not yet optimized mechanical properties on each level. It opens up a completely new processing route for the synthesis of multi-level hierarchically structured omposites, giving prospects to multi-functional structure-properties relationships.
DOI: 10.15480/882.1398
ISSN: 2045-2322
Institute: Keramische Hochleistungswerkstoffe M-9 
Feststoffverfahrenstechnik und Partikeltechnologie V-3 
Type: (wissenschaftlicher) Artikel
Project: SFB 986: Teilprojekt A3 - Herstellung höherer hierarchischer Ebenen von Materialsystemen mit der Wirbelschicht-granulation und Diskrete-Elemente-Modellierung der Materialien 
SFB 986, Teilproject A6 - Herstellung und Charakterisierung hierarchischer, multi-funktionaler Keramik/Metall-Polymer Materialsysteme 
License: In Copyright In Copyright
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