Polymer Cement Interaction
Phase composition of CaP-powders, CaP-ceramics and hydrated CaP-cements are quantified by the Rietveld refinement of XRD data. The link between mechanical strength and mineralogical phase composition is investigated. Influence of biocompatible additives on the hydration and strength is analysed with a combination of heat flow calorimetry and in-situ XRD at 37°C (body temperature).
Calcium Phosphate Cements
Calcium Carbonate Precursors
The understanding and interpretation of the connection of phase relations, crystal chemical aspects, dopands and resulting physical properties can be very nicely demonstraded in the case of phosphors. Suitable ions, such as Mn, Cr or REE like Eu, Ce or Tb, are chemically stable incorporated in suitable hosts.
In case of BAM (Ba-beta-alumina:Eu) as a blue phosphor the luminescence properties have been optimized. The study of Phase relations and crystal chemistry are important aspects of the mineralogical research.
Digitalization and characterization of the collections of Greek and Roman coins in the various Numismatic Collections at the FAU and providing them in an online database is an important step towards a Virtual Research Environment (VRE), providing input for the Semantic Web reacting to the demand of Open Linked Data.
3D laserscans provide the possibility to study these coins using non-destructive methods in order to trace the craftsmanship of ancient Greek and Roman metalworkers. Virtual sections of these coins provide information which cannot be collected otherwise without completely destroying these precious ancient artefacts.
In addition, a complete image composed by many single BSE (backscattered electron) images reveal possible exsolutions or alloy anomalies.
By mapping these BSE images onto the 3D model of the coin we achieve a unique insight and far more complete picture of these ancient masterpieces from a metallurgical point of view.
Dr. Martin Boß, Kurator Antikensammlung Erlangen,
Prof. Dr. Ing. Marc Stamminger, Lehrstuhl der Informatik 9 (graphische Datenverarbeitung),
Prof. Dr. Matthias Göbbels, Lehrstuhl für Mineralogie,
Andreas Murgan M.A., Antikensammlung Erlangen,
Dipl.-Ing. Christian Abe, Lehrstuhl für Mineralogie.
Kooperationspartner am Forschungsprojekt „NUMiD – Geschichte prägen/Werte bewahren” des Institutes für Geschichtswissenschaft 3 der Heinrich-Heine-Universität Düsseldorf.