PAOLO PICCARDO

Dal 2008 l'Ufficio beni archeologici è impegnato nella conduzione e promozione del progetto di ricerca multidisciplinare "Karnyx di Sanzeno". Si tratta di un progetto di ricostruzione sperimentale e di valorizzazione di una tromba da guerra celtica rinvenuta, in stato frammentario, nell'abitato retico di Sanzeno (Val di Non). Al progetto...

Bronze artifacts from Early Bronze Age in Europe often contain white inclusions in the metallic matrix, that are identified as tin oxides (SnO2 or Cassiterite). These inclusions are interpreted as un-smelted residues coming from the copper ore and are generally mixed with more complex oxidized inclusions, which contain sulfur,...

An in-depth investigation was performed on a metallic interconnect extracted from an SOFC stack operated for 40,000 h. The characterization was performed on the surface and the cross-section, paying attention to the evolution of the materials due to the interaction with the dual atmosphere of the stack under operating parameters. The...

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This research is focused on the study of the samples, approximatively 15 9 30 mm2 sized, that were mechanically cut from two sheets (0.4 and 0.2 mm thick, respectively) of AISI 444 Type ferritic stainless steel (FSS) (DIN 1.4521, Eu designation X2CrMoTi18-2); this material was in the 'as-rolled' state. Part of these specimens were...

Electrochemical Impedance Spectroscopy (EIS) is one of the most common techniques to characterize Solid Oxide Fuel Cells (SOFCs) during operation and to evaluate the influence on their performances of several working conditions and degradation effects. However, process overlapping in the frequency domain makes it difficult to...

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The performance of an anode supported SOFC during operation depends on the stability and reliability of the cell components vs. time. This paper focuses on the anode with special attention given to the active part at the interface with the electrolyte. An original method to quantify the local Ni content in the anode of solid oxide fuel cells is...

Artistic patination is a traditional colouring technique for metal sculpture, employed by artists in ancient and modern times for aesthetic purposes. Today, knowledge of the artistic value and the chemistry of this superficial chromatic layer, called 'artistic patina', can be successfully acquired through a close collaboration between living...

A categorization of corrosion morphologies of archaeological Sn bronzes was carried out on archaeological Iron Age objects. The objects come from a Celtic deposit located in central France (Tintignac, Corrèze) and are dated between 2nd and 3rd cent BC. Being samples of corroded metals taken from a single find spot, parameters connected to the...

Metallic interconnects represent the main component of a solid oxide fuel cell (SOFC) stack in terms of weight and volume. They are typically made of ferritic stainless steel (FSS) coated on the air side. At the stack operating conditions, the interconnect is exposed to a dual atmosphere: air at the cathode side; fuel (a hydrogen-rich mixture)...

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The investigations performed on state-of-the-art SOFC stacks operated at various electrical load for several thousand hours have underlined the importance to better understand how the sealant materials evolve during the operation period. The opportunity to operate a stack and to have access to post-experiment samples is quite unique and opened...