Microstructure and phase composition of bronze Montefortino helmets discovered Mediterranean seabed to explain an unusual corrosion

Abstract Two Monterfortino helmets, recovered in the Mediterranean seabed, show unusual features with respect to the more common helmets of the same period and found in underwater environments. Hence, they were investigated by a multi-analytical approach, which allowed us to identify the compounds c...

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Autores principales:	Francesco Armetta, Maria Luisa Saladino, Antonella Scherillo, Eugenio Caponetti
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/faa1f47f66f14845955e504e58d6a89c
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spelling	oai:doaj.org-article:faa1f47f66f14845955e504e58d6a89c2021-11-28T12:21:07ZMicrostructure and phase composition of bronze Montefortino helmets discovered Mediterranean seabed to explain an unusual corrosion10.1038/s41598-021-02425-62045-2322https://doaj.org/article/faa1f47f66f14845955e504e58d6a89c2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02425-6https://doaj.org/toc/2045-2322Abstract Two Monterfortino helmets, recovered in the Mediterranean seabed, show unusual features with respect to the more common helmets of the same period and found in underwater environments. Hence, they were investigated by a multi-analytical approach, which allowed us to identify the compounds constituting the helmets and to make some considerations about their metallurgy, although all the metal was converted to degradation products. The helmets, originally made in bronze, have maintained their original shape because of copper sulphides formation. The observed differences in composition between the two helmets were attributed to the position modification, of one of them, into the seabed along centuries. For the first time, a microstructural investigation permits to reconstruct the history of the aging processes involved in the total oxidation of roman bronze helmet metal.Francesco ArmettaMaria Luisa SaladinoAntonella ScherilloEugenio CaponettiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Francesco Armetta Maria Luisa Saladino Antonella Scherillo Eugenio Caponetti Microstructure and phase composition of bronze Montefortino helmets discovered Mediterranean seabed to explain an unusual corrosion
description	Abstract Two Monterfortino helmets, recovered in the Mediterranean seabed, show unusual features with respect to the more common helmets of the same period and found in underwater environments. Hence, they were investigated by a multi-analytical approach, which allowed us to identify the compounds constituting the helmets and to make some considerations about their metallurgy, although all the metal was converted to degradation products. The helmets, originally made in bronze, have maintained their original shape because of copper sulphides formation. The observed differences in composition between the two helmets were attributed to the position modification, of one of them, into the seabed along centuries. For the first time, a microstructural investigation permits to reconstruct the history of the aging processes involved in the total oxidation of roman bronze helmet metal.
format	article
author	Francesco Armetta Maria Luisa Saladino Antonella Scherillo Eugenio Caponetti
author_facet	Francesco Armetta Maria Luisa Saladino Antonella Scherillo Eugenio Caponetti
author_sort	Francesco Armetta
title	Microstructure and phase composition of bronze Montefortino helmets discovered Mediterranean seabed to explain an unusual corrosion
title_short	Microstructure and phase composition of bronze Montefortino helmets discovered Mediterranean seabed to explain an unusual corrosion
title_full	Microstructure and phase composition of bronze Montefortino helmets discovered Mediterranean seabed to explain an unusual corrosion
title_fullStr	Microstructure and phase composition of bronze Montefortino helmets discovered Mediterranean seabed to explain an unusual corrosion
title_full_unstemmed	Microstructure and phase composition of bronze Montefortino helmets discovered Mediterranean seabed to explain an unusual corrosion
title_sort	microstructure and phase composition of bronze montefortino helmets discovered mediterranean seabed to explain an unusual corrosion
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/faa1f47f66f14845955e504e58d6a89c
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Microstructure and phase composition of bronze Montefortino helmets discovered Mediterranean seabed to explain an unusual corrosion

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