[log in to unmask] wrote:
> Theophilus mentions (in chapter 92) a method of hard soldering iron with copper as solder, all packed into a clay-shell before heatened.
> ....
> Concerning earlier research on this technology, I haven´t been able to find much in available literature. ....
This method of soldering iron seems to date back to pre-Roman times in Central Europe (Latène C-D1). It has been prooved by examination of the molten silicate debris ("furnace bottoms", "smithing slags") which vary extremely in their (chemical) Fe-oxide contents. Soldered iron objects have not been excavated at Steinbuehl but are known from other sites of similar age (oppidum Manching, Heuneburg). The copper used at Steinbuehl contained some As and Sb.
KEESMANN, I. und HEEGE, A. (1990): Archäometallurgische Untersuchungen an
Material der Ausgrabung 1984 am "Steinbühl" bei Nörten-Hardenberg, Ldkr.
Northeim. Nachrichten aus Niedersachsens Urgeschichte 59, 87-109 (1990).
KEESMANN, I., MAIER, P. und HEEGE, A. (1995) : Kupfer in den Schlacken
der Eisenverarbeitung vom "Steinbühl" bei Nörten-Hardenberg, Ldkr. Northeim,
Bundesrepublik Deutschland. Paléometallurgie du fer et cultures. Syposium
international du comité pour la sidérurgie anciénne, Belfort-Sevenans, 1.-3.
November 1990 (Hrsg. P. Benoît und P. Fluzin). Seiten 465-473. Vulcain, Belfort
1995.
Ingo Keesmann
__________________________________________________________
Arbeitsgruppe Archaeometallurgie
Institut fuer Geowissenschaften
Johannes Gutenberg-Universitaet Mainz
D-55099 Mainz (Germany)
Telefon (+49) 6131 39 3 0181
Telefax (+49) 6131 39 2 3070
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http://www.uni-mainz.de/FB/Geo/Geologie/archaeo/
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