The Importance of Scientific Investigation on the Corrosion Layers in Technical Studies of the Historical Metal Objects - Journal of Research on Archaeometry
year 1, Issue 1 (2015)                   JRA 2015, 1(1): 17-30 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Naeimi Taraei P, Vatandoust Haghighat R. The Importance of Scientific Investigation on the Corrosion Layers in Technical Studies of the Historical Metal Objects. JRA. 2015; 1 (1) :17-30
1- Ph.D. Candidate ,
2- Assistant Professor Islamic Azad University
Abstract:   (1631 Views)

In many cases it may be thought, corrosion products cover the unique characteristics of ancient metal objects that are desirable to display. While the scientific point of view, the corrosion products as well as metal substrates are important and maintain the original topography of metal that have been replaced. In technical studies of the historical metal objects, the dense layers of corrosion products are of particular interest due to technical values inherent in them. In the present research, a few metal objects from different historical sites of Iran are studied with the main aim of finding technical evidences recorded in the corrosion layers. For this purpose optical and scanning electron microscopy techniques and instrumental methods of analysis were used. Decuprification  phenomenon  and the fossilized structure, recorded in the corrosion layers, remaining metallic and non-metallic inclusions and evidence of the occurrence of Microscopic segregation or coring phenomenon, evidence of the occurrence of annealing twin lines, cyclical deposition of copper oxide and secondary copper corrosion products and A similar layer structure of copper and tin oxides as Unusual phenomenon, crystallized salts, a shift of the initial tin-enriched layer, Evidence of the occurrence of ferrite-pearlite structure in magnetite corrosion product of steel objects and carbon content gradient in ferrous alloys were the results of the studies. According to this, scientific study of corrosion layers of metal objects is very important in the analysis of Corrosion behavior of objects and study of their microstructure and method of production. So this scientific information is important in archaeometry studies. There are many signs, determine the position of original surface of objects. Evaluation of corrosion layers to identify the symptoms and distribution of them before cleaning of objects is necessary. In conclusion, emphasis is made on the need for designing a model for the study of corrosion processes at the archaeological sites. A correct policy is necessary to consider the information obtained from archeological studies, conservation and related sciences and to provide objectives and different priorities for future researchers in their research or conservation programs.

Full-Text [PDF 1643 kb]   (731 Downloads)    
Technical Note: Original Research | Subject: Archaeometry
Received: 2015/07/9 | Accepted: 2015/08/16 | Published: 2015/09/23 | ePublished: 2015/09/23

1. Bartuli, C., Cigna, R., Fumei, O. (1999). Pre‌diction of durability for outdoor exposed bronzes: Estimation of the corrosivity of the atmospheric environment of the Capitoline Hill in Rome. Studies in Conserva‌tion. 44. 245-252. [DOI]
2. Degrigny,C. (2007). Examination and conservation of historical and archaeological metal artifacts: a European overview. In: Corrosion of metallic heritage artifacts: inves‌tigation, Conservation and prediction for long-term behavior, P. Dillmann, G. Béran‌ger, PPiccardo and H.Matthiesen (eds.), European Federation of Corrosion Publica‌tions, 1-17.
3. Edwards,G. (1989). Guidelines for dealing with material from sites where organic re‌mains have been preserved by metal corro‌sion products. Evidence Preserved in Corro‌sion Products: New Fields in Artifact Studies. 8. The United Kingdom Institute for Con‌servation. 3-7.
4. Mcneil, M.B., Little, B.J.(1992). Corrosion mechanisms for copper and silver objects in near-surface environments. Journal of the American Institute for Conservation, 31(3), 7, 355-366. [DOI]
5. Oddy, W.A., Meeks, N.D. (1982). Unusual phenomena in the corrosion of ancient bronzes. Studies in Conservation, 27(1), 119–124. [DOI]
6. Oudbashi,O., Emami,S.M., Ahmadi,H. & Davami,P. (2013). Micro-stratigraphical in‌vestigation on corrosion layers in an-cient Bronze artefacts by Scanning electron mi‌croscopy energy dispersive spectrometry and optical microscopy. Heritage Science, 1(21) doi:10.1186/2050-7445-1-21. [DOI]
7. Piccardo, P., Mille, B., Robbiola, L. (2007). Tin and copper oxides in corroded archae‌ological bronzes. Corrosion of metallic herit‌age artifacts: Investigation, conservation and prediction for long-term behavior. European Federation of Corrosion Publications. 48, 239-262. [DOI]
8. Quaranta, M., Sandu, I. (2008). Micro-stra‌tigraphy of copper-based archaeological objects: Description of degradation mecha‌nisms by means of an integrated approach. 9th International Conference on NDT of Art, 1-8.
9. Rocca,E., Mirambet,F. (2007). Corrosion Inhibitors for metallic artifacts temporary protection. Corrosion of metallic heritage ar‌tifacts: Investigation, conservation and pre‌diction for long-term behavior, European Federation of Corrosion Publications. 48. 308-334. [DOI]
10. Scott, B. (1989). The retrieval of technological information from corrosion products on early wrought iron artifacts. Evidence Pre‌served in Corrosion Products: New Fields in Artifact Studies. 8. 8-14.
11. Scott, D.A. (1997). Copper compounds in metals and colorants: Oxides and hydrox‌ides. Studies in Conservation, 42, 93-100. [DOI]
12. Scott, David A. (2002). Copper and Bronze in Art: Corrosion, Colorants, Conservation. The Getty Conservation Institute. 352-392.
13. Scott,D.A., (1985). Periodic corrosion phe-nomena in bronze antiquities. Studies in Conservation. 30. 49-57. [DOI]
14. Snoek, W., Plimer, W. I. R., Reeves, S. (1999). Application of Pb isotope geo-chemistry to the study of the corrosion products of archaeological artifacts to con‌strain provenance. Journal of Geochemical Exploration, 66(1-2). 421-425. [DOI]
15. Soerensen, B., Gregory, D. (1998). In situ preservation of artifacts in Nydam Mose. Metal98. Proceeding of the International conference on Metals Conservation. 94-99.
16. Turgoose, S. (1989). Corrosion and structure: Modeling the preservation mechanisms. Evidence Preserved in Corrosion Products: New Fields in Artifact Studies. 8. The United Kingdom Institute for Conserva‌tion. 30-32.
17. Vega, E., Dillmann, P., Berger, P. (2007). Spe‌cies transport in the corrosion products of ferrous archaeological analogues: contri‌bu‌tion to the modelling of long term iron cor‌rosion mechanisms. In Corrosion of metallic heritage artifacts: Investigation, conservation and prediction for long-term behavior, P. Dillmann, G. Béranger, P. Piccardo & H. Matthiesen (eds.), European Federation of Corrosion Publications, 92-108.
18. Wang ,Q., Merkel, J. F. (2001). Studies on the redeposition of copper in Jin bronzes from Tianma – Qucun, Shanxi, China. Studies in Conservation, 46, 242-250.
19. Watkins, S.C., Shearman, F.N., Haith, C. (1998). Conservation of metal artifacts from an Anglo-Saxon cemetery at Buck-land, Kent, England. Metal 98. Proceeding of the international conference on Metals Conservation. 15-21.

Add your comments about this article : Your username or Email:

Send email to the article author

© 2018 All Rights Reserved | Journal of Research on Archaeometry

Designed & Developed by : Yektaweb