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Plasma reduction of bronze corrosion developed under long-term artificial ageing

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Abstract

Reference Cu-based alloy with chemical composition and micro-chemical structure similar to that of ancient alloys has been used for carrying out the artificial long-term degradation test based on chloride enriched soil (chemical + soil) degradation. The results show that such degradation procedure produces natural like “patinas” as the ones grown on archaeological artefacts, from a chemical, structural and micro-morphological point of view. Glow discharge plasma technique has been employed for the treatment of the as-corroded bronze coupons. The gradual elimination of chloride-containing corrosion products in favour of the formation of more stable species and even the complete reduction back to copper has been observed. The chemical and metallurgical features have been determined by combined use of different analytical techniques such as scanning electron microscopy with energy dispersive X-ray micro-analysis (SEM-EDS), X-ray diffraction (XRD) and optical microscopy.

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Authors and Affiliations

  1. Laboratory of Physical Chemistry, National Technical University of Athens, Iroon Polytechneiou 9, 15780, Athens, Greece

    Jelica Novakovic, Olga Papadopoulou & Panayota Vassiliou

  2. Laboratory of Plasma Physics, Institute of Materials Science, NCSR “Demokritos” 15310 Ag. Paraskevi, Attiki, Greece

    Eleni Filippaki & Yannis Bassiakos

Authors
  1. Jelica Novakovic
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  2. Olga Papadopoulou
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  3. Panayota Vassiliou
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  4. Eleni Filippaki
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  5. Yannis Bassiakos
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Corresponding author

Correspondence to Panayota Vassiliou.

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Novakovic, J., Papadopoulou, O., Vassiliou, P. et al. Plasma reduction of bronze corrosion developed under long-term artificial ageing. Anal Bioanal Chem 395, 2235–2244 (2009). https://doi.org/10.1007/s00216-009-3015-2

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  • DOI: https://doi.org/10.1007/s00216-009-3015-2

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