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MM: Fachverband Metall- und Materialphysik

MM 58: Topical session: X-ray and neutron scattering in materials science III - Real-time insights into fast heat treatment processes using diffraction methods

MM 58.5: Vortrag

Donnerstag, 3. April 2014, 17:00–17:15, BAR 205

Synchrotron radiation based non-destructive investigation of Neolithic and Early Bronze Age axe — •Leif Glaser¹, Mechtild Freudenberg², Karen Appel¹, Manuela Borchert¹, Joern Donges¹, Andrew King³, Thomas Lippmann⁴, Andre Rothkirch¹, and Norbert Schell⁴ — ¹DESY, Hamburg, Germany — ²Stiftung Schleswig-Holsteinische Landesmuseen, Schloß Gottorf, Schleswig, Germany — ³ESRF, Grenoble, France — ⁴HZG, Geesthacht, Germany

To understand the historic production methods bronze axe replicas were cast and treated using replicated stone tools for metalworking. To understand techniques for smoothing the surfaces, hardening the cutting edge, and cutting or embossing the elaborate ornaments of the surface, repeated investigations, using non-destructive SR-based techniques, as XRF and XRD in transmission and reflectance geometry were performed on the replicas and original ancient axes.

Based on our experiments the reproduction techniques for making replicas could be improved, while on the other hand some historic references could be identified as historic forgeries, but forgeries nonetheless. Further experiments concerning the actual casting process are ongoing, with emphasis on most likely casting inflicted variable stoichiometric bronze distribution within the individual object. Some replica were cast at the Howadtsche Metallgiesserei Kiel using modern casting techniques, others at the Archaeological Landesmuseum Schloß Gottorf using historic methods and tools only, while the experiments were performed in Hamburg at DESY.