Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Ancient Roman nano-technology: Insight into the manufacture of mosaic tesserae opacified by calcium antimonate
Δημιουργός/Συγγραφέας:	Drünert F. Palamara E. Zacharias N. Wondraczek L. Möncke D.
Εκδότης:	Elsevier Ltd
Ημερομηνία:	2018
Γλώσσα:	Αγγλικά
ISSN:	0955-2219
DOI:	10.1016/j.jeurceramsoc.2018.06.031
Περίληψη:	Opaque mosaic glass tesserae containing calcium antimonates from Ancient Messene, Greece (1st–4th century CE) were investigated by scanning electron microscopy, Raman spectroscopy and X-ray diffraction. Both trigonal CaSb2O6 and cubic Ca2Sb2O7, with crystallite diameters below 1 μm, were identified as opacifying agents. To better understand ancient technologies, we prepared model glasses that were opacified by crystallisation via a secondary heat treatment, by direct crystallisation during the melting process, or by the addition of pre-reacted calcium antimonate to a base glass. We found that direct crystallisation replicated the antique glass artefacts most accurately. We demonstrated that 0.2 wt% of nucleating agents like TiO2 and SnO2 already exert significant influence on the crystallisation behaviour of calcium antimonates. Secondary scattering centres such as silica and carbonates contribute to the optical appearance. Concurrently, we reproduced opaque white glass ceramics in a reconstructed, wood-fired, Roman-type glass furnace built by Wiesenberg (2014).
Τίτλος πηγής δημοσίευσης:	Journal of the European Ceramic Society
Τόμος/Κεφάλαιο:	38
Τεύχος:	14
Σελίδες:	4799-4805
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Φασματοσκοπία[EN] Spectroscopy
Λέξεις-Κλειδιά:	Calcium antimonate Mosaic tesserae Nucleation Opacification Roman glass mosaics
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2018 Elsevier Ltd
Σημειώσεις:	Friedrich-Schiller-Universität Jena, FSU This work was financially supported by the ProChance program (A1) of the Friedrich Schiller University Jena .
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο