Standard Nature of the Passive Layers of Buried Archaeological Bronze - The Example of Two Roman Half-length Portraits

Luc Robbiola (1) , Loïc-Pierre Hurtel (2)

1 TRACES - Travaux et recherches archéologiques sur les cultures, les espaces et les sociétés
2 LRMF - Laboratoire des Musées de France

Study of the patinas of two Roman half-length portraits has been conducted in order to improve our understanding of the corrosion processes according to a standard model of the Cu-Sn corrosion structure. The chemical and physical nature of the patinas has been characterized from sampling of corrosion products but also on metallic cross-sections of the artefacts, using complementary physico-chemical methods. The effect of decuprification of the alloy has been determined and the influence of the soil composition investigated.

Domaines: Matériaux

Luc Robbiola, Loïc-Pierre Hurtel. Standard Nature of the Passive Layers of Buried Archaeological Bronze - The Example of Two Roman Half-length Portraits. METAL 95: International conference on metals conservation, Sep 1995, Semur-en-Auxois, France. pp.109-117. ⟨hal-00975718⟩