Multianalytical Study of Patina Formed on Archaeological Metal Objects from Bliesbruck-Reinheim. Wadsak, M., Constantinides, I., Vittiglio, G., Adriaens, A., Janssens, K., Schreiner, M., Adams, F. C., Brunella, P., & Wuttmann, M. Microchimica Acta, 133(1-4):159–164, June, 2000.
Multianalytical Study of Patina Formed on Archaeological Metal Objects from Bliesbruck-Reinheim [link]Paper  doi  abstract   bibtex   
Patinas naturally formed on archaeological bronze alloys were characterized using light microscopy (LM), micro energy dispersive X-ray ¯uorescence analysis ("-EDXRF), time of ¯ight secondary ion mass spectrometry (TOF-SIMS) and scanning electron microscopy in combination with energy dispersive X-ray microanalysis (SEM/EDX). The examinations carried out on cross-sections of samples have shown that in all samples the copper content in the corrosion layer is lower than in the bulk, while an increase of tin and lead could be observed. Two different types of corrosion were found: ®rst type, a corrosion formation leading to a three layer structure was observed on lead bronze. The outer layer consists mainly of Cu(II) compounds and soil material, followed by a fragmented layer of cuprous oxide and the surface layer of the alloy, where a depletion of copper and an enrichment of tin and high amounts of Cl could be detected. The second type of corrosion is characterized by a two layer structure on the tin bronze sample consisting of an outer layer with copper containing corrosion products and a layer with cracks, which reveals a depletion of copper whereas tin and lead are enriched. Also high amounts of Si were detected in this surface layer.
@article{wadsak_multianalytical_2000,
	title = {Multianalytical {Study} of {Patina} {Formed} on {Archaeological} {Metal} {Objects} from {Bliesbruck}-{Reinheim}},
	volume = {133},
	issn = {0026-3672, 1436-5073},
	url = {http://link.springer.com/10.1007/s006040070086},
	doi = {10.1007/s006040070086},
	abstract = {Patinas naturally formed on archaeological bronze alloys were characterized using light microscopy (LM), micro energy dispersive X-ray ¯uorescence analysis ("-EDXRF), time of ¯ight secondary ion mass spectrometry (TOF-SIMS) and scanning electron microscopy in combination with energy dispersive X-ray microanalysis (SEM/EDX). The examinations carried out on cross-sections of samples have shown that in all samples the copper content in the corrosion layer is lower than in the bulk, while an increase of tin and lead could be observed. Two different types of corrosion were found: ®rst type, a corrosion formation leading to a three layer structure was observed on lead bronze. The outer layer consists mainly of Cu(II) compounds and soil material, followed by a fragmented layer of cuprous oxide and the surface layer of the alloy, where a depletion of copper and an enrichment of tin and high amounts of Cl could be detected. The second type of corrosion is characterized by a two layer structure on the tin bronze sample consisting of an outer layer with copper containing corrosion products and a layer with cracks, which reveals a depletion of copper whereas tin and lead are enriched. Also high amounts of Si were detected in this surface layer.},
	language = {en},
	number = {1-4},
	urldate = {2021-05-07},
	journal = {Microchimica Acta},
	author = {Wadsak, Michael and Constantinides, Ina and Vittiglio, Guido and Adriaens, Annemie and Janssens, Koen and Schreiner, Manfred and Adams, Freddy C. and Brunella, Philippe and Wuttmann, Michel},
	month = jun,
	year = {2000},
	pages = {159--164},
}

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