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Scanning Auger Microscopy and X Ray Photoemission Spectroscopy Studies of Metallic Archaeomaterials

Published online by Cambridge University Press:  26 February 2011

E. Paparazzo  and
L. Moretto
E. Paparazzo
Affiliation:
Istituto di Struttura della Materia del CNR, Via E. Fermi 38, 00044 Frascati, Italy, paparazzo@vaxism.ism.fra.cnr.it
L. Moretto
Affiliation:
Istituto di Struttura della Materia del CNR, Via E. Fermi 38, 00044 Frascati, Italy, paparazzo@vaxism.ism.fra.cnr.it
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Abstract

We report on the surface microchemistry of a Roman iron object and of a Roman lead pipe ‘fistula’. The original patina of the iron sample consists mainly of oxidic phases whose lateral distribution is imaged with a submicron spatial resolution. Metallic iron in the bare surface is covered with a Fe(lll)-Fe(ll) oxidic layer which is several times thicker than in a modern ferritic steel. We find that the presence of a flux minimizes lead oxidation in the joint of the fistula as well as in comparison, ‘modern’ lead soldered samples. In one of these comparison samples the lateral distribution of the chemical species present is imaged with a spatial resolution of about 1000 Å.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 462: Symposium DD – Materials Issues in Art and Archaeology V , 1996 , 53
Copyright
Copyright © Materials Research Society 1997

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References

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