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Microstructure and thermal analysis of Cu-Cu2O eutectic – Can we mimic archeological remains?

Fossé, Cécile and Castro-Román, Manuel Jesus and Freulon, Alexandre and Thebault, Yannick and Lacaze, Jacques and Robbiola, Luc Microstructure and thermal analysis of Cu-Cu2O eutectic – Can we mimic archeological remains? (2017) In: SP17 6th Decennial International Conference on Solidification Processing, Old Windsor, July 2017, 25 July 2017 - 28 July 2017 (Old Windsor, Beaumont Estate, United Kingdom). (Unpublished)

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Abstract

An attempt was performed to reproduce in laboratory the microstructure observed in ancient artefacts and metallurgical remains made of nearly pure copper cast under ambient atmosphere. Two samples of pure Cu were prepared for thermal analysis, then heated and held for various times in the liquid state under ambient air for oxidizing, and finally cooled down at given rate. It was observed that a thick Cu2O oxide layer developed around the samples which gives the metal the same outer appearance than reported for metallurgical remains, namely a highly oxidized surface with large voids. Further, the microstructure of the metal consisted of (Cu) or Cu2O dendrites and a (Cu)-Cu2O eutectic showing strong similarity with the observations made on remains and artefacts.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole des Hautes Etudes en Sciences Sociales - EHESS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Other partners > Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional - CINVESTAV-IPN (MEXICO)
French research institutions > Institut National de Recherches Archéologiques Préventives - INRAP (FRANCE)
Other partners > Ministère de la culture et de la communication (FRANCE)
Laboratory name:
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Deposited By: Luc Robbiola
Deposited On:31 Jan 2019 12:14

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