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Combined spectral analysis (EDXRF, ICP-AES, XRD, FTIR) for characterization of bronze Roman Mirror

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: RODICA-MARIANA ION, DOINA BOROS, MIHAELA-LUCIA ION, IRINA DUMITRIU, FIERASCU RADU-CLAUDIU, RADOVICICONSTANTIN, GINA FLOREA,CRISTIANA BERCU

Editorial: Metalurgia International, 5/2008, p.61-65, 2008.

Rezumat:

Archaeometallurgy is, to some extent, applied engineering
in a discipline of anthropology. It describes the properties and
production of metal objects from archaeological or at least
historical contexts. The chemical and structural examination of the
surface corrosion products grown on archaeological bronzes has
been the subject of study for at least 170 years. During the last
decades, scientists have made extensive use of different analytical
methods to investigate the complex structure and the composition of
the bronze corrosion products i.e., the patina and to find a
relationship between this information, the environment in which they
are formed and the micro-chemical structure of the alloys. This
innovative approach has been used in order to gain further insight
into the microchemical structure of the corrosion products as well as
for selecting the cleaning and restoration methods.
By means of the combined use X-ray diffraction (XRD),
Fourier-Transformed spectrometry (FTIR), energy dispersive X-ray
fluorescence (EDXRF), corrosion products, i.e., the patina, grown
on archaeological bronze artefacts used by Romans, have been
studied. For all of the archaeological artefacts, the results show that
via the innovative use of ICP-AES and EDXRF it is possible to
obtain reliable and reproducible quantitative elemental composition
depth profiles for the outermost corroded layers, which are briefly
discussed in combination with the microchemical features FTIR and
XRD.

Cuvinte cheie: XRF, spectrometrie, otel inoxidabil // XRF, spectrometry, stainless steel.

URL: http://www.metalurgia.ro/Metalurgia_International_5_2008.pdf