Scanning electron microscopy and energy dispersive spectrometry analyses of ancient bronze artefacts of the Urartian period from Yegheghnadzor region, Armenia.
OM
SEM-EDS
Urartu
bowl
bronze belts
Journal
Journal of microscopy
ISSN: 1365-2818
Titre abrégé: J Microsc
Pays: England
ID NLM: 0204522
Informations de publication
Date de publication:
02 2022
02 2022
Historique:
received:
08
07
2021
accepted:
02
09
2021
pubmed:
10
9
2021
medline:
10
9
2021
entrez:
9
9
2021
Statut:
ppublish
Résumé
The results of the analysis on some fragments of bronze belts and a bowl discovered from southwestern Armenia, Yegheghnadzor archaeological site, are discussed. The samples are dated to the 7 and 6 BCE from the Urartian period. The artefacts were corroded, and a multilayer structure was formed. To study the stratigraphy of layers and their composition, the samples were analysed using scanning electron microscopy and energy dispersive spectrometry (scanning electron microscopy (SEM)-EDS) and optical microscopy techniques. The bronze finds appear with the typical incrustations, rich in alloy alteration compounds. Concentrations of copper and tin in the alloys were quantified by SEM-EDS: The pattern and the percentage of the alloy are the same for the belts. Regarding the bowl sample, it is constituted by two foils, perfectly in contact but different in colour, thickness and composition. The results evidenced that only two elements participate in forming alloy composition in the samples: Cu and Sn. The tin content is variable from 7.75% to 13.56%. Other elements such as Ag, As, Fe, Ni, P, Pb, Sb and Zn are lower and more than 1% and can be considered as impurities.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
68-84Informations de copyright
© 2021 Royal Microscopical Society.
Références
Bobokhyan, A., Kunze, R., Kh M., & Pernicka, E. (2013). Subartu XXXVIII At the Northern Frontier of Near Eastern Archaeology. Proceedings of the International Humboldt-Kolleg Venice, January 9-12. Turnhout, Belgium: Brepols.
Bobokhyan, A., Kh M., Gasparyan, B., Avetisyan, P., Ch C., & Pernicka, E. (2014). Transition to extractive metallurgy and social transformation in Armenia at the end of the Stone Age. In B. Gasparyan & M. Arimura (Eds.), Stone Age of Armenia: A Guide-book to the Stone Age Archaeology in the Republic of Armenia (pp. 501-525). Kanazawa, Japan: Center for Cultural Resource Studies, Kanazawa University.
Mazzeo, R., Prati, S., Quaranta, M., & Sciuto, G. (2012). An overview of analytical techniques and methods for the study and preservation of artistic and archaeological bronzes. Mediterranean Archaeology and Archaeometry, 12(2), 261-271.
Bertolotti, G. Bersani, D., Lottici, P. P., Alesiani, M., & Malcherek, T. (2012). Micro-Raman study of copper hydroxyl-chlorides and other corrosion products of bronze samples mimicking archaeological coins. Analytical and Bioanalytical Chemistry, 402(4), 1451-1457. https://doi.org/10.1007/s00216-011-5268-9
Doménech, A., Doménech-Carbó, M. T., & Pasies, M. d. B. C. (2012). Modeling corrosion of archaeological silver-copper coins using the voltammetry of immobilized particles. Electroanalysis, 24, 1945-1955. https://doi.org/10.1002/elan.201200252
Rizzo, F., Cirrone, G. P., Cuttone, G., Esposito, A., Garraffo, S., Pappalardo, G., … & Russo, S. (2011). Non-destructive determination of the silver content in Roman coins (nummi), dated to 308-311 A.D., by the combined use of PIXE-alpha, XRF and DPAA techniques. Microchemical Journal, 97, 286-290, https://doi.org/10.1016/j.microc.2010.09.017.
Ingo, G. M., De Caro, T., Riccucci, C., & Khosroff, S. (2006). Uncommon corrosion phenomena of archaeological bronze alloys. Applied Physics A: Materials Science & Processing, 83, 581-588.
Scott, D. A. (2002). Copper and bronze in art: corrosion, colorants and conservation. Los Angeles: Getty Conservation Institute Publications.
Scott, D. A. (1994). An examination of the patina and corrosion morphology of some Roman bronzes. Journal of the American Institute of Conservation, 33(1), 1-23.
Martirosyan, A. (1964). Armenia in Iron and Bronze Ages. Armenia: Yerevan.
Esayan, C. A., & Khnkikyan, O. C. (1990). Discovery of Biainil rests at Yegheghnadzor. Banber Yerevani Hamalsarani, 3(72), 37-43.
Manukyan, S. (2015). Bronze belts of Lchashen-Metsamor culture in the sculptures of the same period. Arvestagir, April 18.
Meliksetian, Kh., & Pernicka, E. (2006). Geochemical characterisation of Armenian Early Bronze Age metal artefacts and their relation to copper ores. In S. Hansen, A. Hauptmann, I. Motzenbäcker & E. Pernicka (Eds.), Gewinnung und Verbreitung von Metallen und Obsidian in Kaukasien (pp. 41-58). Boonn: Habelt.
Meliksetian, Kh., Pernicka, E., Badalyan, R., & Avetisyan, P. (2003). Geochemical characterisation of Armenian early bronze age metal artefacts and their relation to copper ores. Proceedings of the International Conference on Archaeometallurgy in Europe, Milan, Italy, 24-26 September.
Meliksetian, Kh., Pernicka, E., Avetisyan, P., & Simonyan, H. (2003). Chemical and lead isotope characterisation of Middle Bronze Age bronzes and some Iron Age antimony objects (Armenia). International conference on Archaeometallurgy in Europe, Milan, Italy, 24-26 September.
Meliksetian, Kh., Kraus, S., Pernicka, E., Avetissyan, P. Devejian, S., & Petrosyan, L. (2011). Metallurgy of prehistoric Armenia, Anatolian Metal V. Bochum: Ünsal Yalçın.
Lalli, C., Lanterna, G., Pinna, D., Porcinai, S., Rizzi, M., & Tosini, I. (2006). Indagini diagnostiche. In M. Michellucci (Ed.), Apoxyomenos, the athlete of Croatia (pp. 117-118). Florence: Giunt.
Bertholon, R. (2001). The original surface of corroded metallic archaeological objects: Characterization and location. Revue de Métallurgie (Paris), 9, 817-823.
Robbiola, A. L. Blengino, J. M., & Fiaud, C. (1998). Morphology and mechanisms of formation of natural patinas on archaeological CuSn alloys. Corrosion Science, 40, 2083-2111.
Oddy, W. A., & Meeks, N. D. (1982). Unusual phenomena in the corrosion of ancient bronzes. In N. S. Brommelle & G. Thomas (Eds.), Science and Technologies (pp. 119-124). Washington: IIC Washington Congress.
Scott, D. A. (1991). Corroded microstructures. In D. A. Scott (Ed.), Metallography and microstructure of ancient and historic metals (pp. 43−48). Malibu, CA: Paul Getty Conservation Institute.
Robbiola, L., & Fiaud, C. (1992). Corrosion structures of long-term burial Cu-Sn alloys: Influence of the selective dissolution of copper. Revue de Métallurgie (Paris), 6, 157-162.
Michelucci, M. (2007). Archaeological and archaeometric data in the study of the athlete of Croatia. VII International Conference on Science, Arts and Culture, Veli Lošinj, Croatia, 28-31 August.
Bernard, M. C., & Joiret, S. U. (2009). Understanding corrosion of ancient metals for the conservation of cultural heritage. Electrochimica Acta, 54, 5199-5205.
Robbiola, L., Fiaud, C., & Harch, A. (1994). Characterization of passive layers of bronze patinas (Cu-Sn alloys) in relation with the tin content in the alloy. In P. Marcus, B. Baroux & M. Keddam (Eds.), Modifications of passive films (European Federation of corrosion publications, number 12) (pp. 150-154). London: The Institute of Materials.
Sandu, I., Ursulescu, N., Sandu, I. G., Bounegru, O., Sandu, I. C. A., & Alexandru, A. (2008). Pedological stratification effect of corrosion and contamination products on Byzantine bronze artefacts. Corrosion Engineering, Science and Technology, 43(3), 256-267.
Scott, D. A. (2002). Corrosion and environment. In Copper and Bronze in Art: Corrosion, Colorants, Conservation (pp. 10− 80). Malibu, CA: Paul Getty Conservation Institute.
Selwyn, L. S. (2006). Corrosion of metal artefacts in buried environments. In S. D. Cramer & B. S. Covino Jr. (Eds.), Corrosion: Environments and industries, ASM handbook (Vol. 13C, pp. 306-322). Materials Park, OH: ASM International.
Cushing, D. (1967). Principles of corrosion applicable to ancient metals and methods of identifying corrosion products. Boston: Application of Science in the Examination of Works of Art.
Wadsak, M., Constantinides, I., Vittiglio, G., Adriaens, A., Janssens, K., Schreiner, M., Adams, F. C., Brunella, P., & Wuttmann, M. (2000). Multianalytical study of patina formed on archaeological metal objects from Bliesbruck-Reinheim. Microchimica Acta, 133, 159-164.