Archaeological Arsenical Bronzes and Equilibrium in the As-Cu System
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11663_2018_1322_ReferencePDF.pdf
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Author(s)
Mödlinger, Marianne
Cziegler, Andreas
Macció, Daniele
Schnideritsch, Holger
Sabatini, Benjamin
Date Issued
July 2018
Journal
Metallurgical and Materials Transactions B
Publisher
Springer Science and Business Media LLC
Citation
Mödlinger, Marianne et al. "Archaeological Arsenical Bronzes and Equilibrium in the As-Cu System." Metallurgical and Materials Transactions B 49, 5 (July 2018): 2505–2513 © 2018 The Minerals, Metals & Materials Society and ASM International
Version
Author's final manuscript
Abstract
Understanding the effects of impurities, segregation, undercooling, and solidification velocity is necessary to reconstruct prehistoric As-Cu alloy manufacturing processes and practices. Moreover, these alloys often contain a wide variety of minor and trace elements such that the binary As-Cu equilibrium phase diagram does not adequately represent arsenical bronze artifacts as-cast in ancient molds. Furthermore, the variable cooling rates present in as-cast alloys of predominantly arsenic and copper, due to the thermal properties of differing mold materials, would have had profound effects on the formation of inversely segregated arsenic. Alloys with 1 to 15 wt pct arsenic were prepared and studied using differential thermal analysis, metallography, and scanning electron microscopy with energy-dispersive X-ray spectroscopy. Equilibrium diagrams were established and the potential influence of trace elements discussed. A new liquidus curve for the equilibrium diagram in this compositional range, measuring slightly higher in temperature, was established.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1007/s11663-018-1322-8
