Journal
CORROSION SCIENCE
Volume 145, Issue -, Pages 249-261Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2018.10.010
Keywords
K-Ca-Si glass alteration; ToF-SIMS; mu-Raman; mu-FTIR; Cultural heritage
Funding
- Portuguese Science Foundation [PEst-OE/EAT/UI0729/2011, PEst-OE/EAT/UI0729/2014, SFRH/BD/84675/2012]
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Several K-Ca-Si glass compositions typical of Central-European glassworks are susceptible to damage beyond recall, even in mild museum conservative conditions. In order to provide a comprehensive picture of the deterioration process, replica samples were produced and exposed to four different museum-like environments. The corrosion experiment was followed by the use of ToF-SIMS, mu-Raman and mu-FTIR, performing a systematic compositional and structural study for the early stages (one year) of surface alteration. This work demonstrates the dominant role of Pb2+ and Ca2+ content for the inferable existence of connected conduction pathways, with strong implications on the surface's hydration, alkali-diffusion and hydrolysis.
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