Beschichtete Nanoteilchen: Ausgangsmaterial für neuartige Nanocomposites

摘要

The very special properties of nanomaterials are often properties of isolated particles. Macroscopic parts, exhibiting the properties of the isolated particles can be achieved by coating each particle with a second material, e.g. a ceramic or a polymer. This type of materials can be syn-thesised using the microwave plasma process developed at the Forschungszentrum Karlsruhe. Additionally, by proper selection of the coating material it is possible to avoid grain growth during densification of the powder by sintering or hot pressing. As an example the properties of macroscopic superparamagnetic parts are explained.