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  • An electrochemical and spectroscopic study of surfaces on bronze sculptures exposed to urban environment [Elektronski vir]
    Mikić, Dajana ...
    Polluted urban environment enhances dissolution of patina and underlying bronze material of recent and historical bronze sculptures exposed outdoors. In this work, two bronze statues, situated in one ... of the most polluted Croatian cities, were examined in order to characterize composition of patina and its electrochemical stability. The composition of patina on several positions on each sculpture was determined by EDS, Raman spectroscopy, and FTIR measurements. Electrochemical impedance spectroscopy measurements were conducted in order to evaluate the corrosion stability of both patina and underlying bronze. Results obtained in this work show that the two examined bronze sculptures were covered with patina layer that was mainly composed of copper sulfides and sulphates, which is in accordance with the high concentrations of H2S and SO2 in the atmosphere. However, the variations in the appearance of FTIR and Raman spectra revealed that the amount of each species differed from spot to spot, as well as the fact that other compounds, such as carbonates, were present at some areas. This difference in patina composition was reflected in electrochemical behavior as observed by electrochemical impedance spectroscopy.
    Vir: Materials [Elektronski vir]. - ISSN 1996-1944 (Vol. 14, iss. 8, 2021, str. 1-18)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2021
    Jezik - angleški
    COBISS.SI-ID - 60871939

    Povezava(-e):

    https://www.mdpi.com/1996-1944/14/8/2063
    DiRROS - Digitalni repozitorij raziskovalnih organizacij Slovenije
    DOI

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