The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. http://http://dspace.unitus.it:80 2013-05-19T03:00:16Z 2013-05-19T03:00:16Z Pelosi, Claudia Santamaria, Ulderico Morresi, Fabio Agresti, Giorgia De Santis, Alberto Mattei, Elisabetta http://hdl.handle.net/2067/1323 2011-03-18T01:30:43Z 2007-08-31T22:00:00Z

Title: I gialli di piombo, stagno, antimonio: le opere di Poussin a Saraceni Authors: Pelosi, Claudia; Santamaria, Ulderico; Morresi, Fabio; Agresti, Giorgia; De Santis, Alberto; Mattei, Elisabetta Abstract: In order to characterize the yellow pigments utilized by Carlo Saraceni in The Martyrdom St Erasmus (1612-14), Cathedral of Gaeta (Lt),and by Nicolas Poussin in The Gedeone’s Victory over Madianiti (1623-26) and The Martyrdom St Erasmus both finding at Vatican’s Museum had been applied: micro-Raman spectroscopy, fluorescence X, SEM with micro-analysis EDS, observations at optic-mineralogical microscope and spectro colorimetric analysis; some of these methods were applied on artworks directly, others by micro-pattern taken over paintings. The same investigations had been applied also over others patterns of yellow pigments having the same typology of materials employed by painters and that had been retrieved by commerce from the firms of Kremer and Zecchi.

2007-08-31T22:00:00Z Pelosi, Claudia Santamaria, Ulderico Agresti, Giorgia Morresi, Fabio Cibin, Francesca De Filippo, Barbara http://hdl.handle.net/2067/1335 2011-03-18T01:30:24Z 2008-05-31T22:00:00Z

Title: Colore e materia: i gialli di piombo, stagno, antimonio Authors: Pelosi, Claudia; Santamaria, Ulderico; Agresti, Giorgia; Morresi, Fabio; Cibin, Francesca; De Filippo, Barbara Abstract: The aim of this work is to investigate the methods used for producing artificial yellow pigments (‘type I’ and ‘type II’ lead-tin yellow, lead antimonate yellow or Naples yellow, and lead-tin-antimony yellow), starting from various recipes and the more recent literature, and to characterize the materials produced by utilising different analytical techniques. The artificial yellow pigments were obtained from pure chemicals (PbO, Pb3O4, SnO2, Sb3O4). The effects produced were tested by varying the stoichiometric ratios, melting temperatures and times, and crucible typologies. The powders obtained were characterized by means of SEM-EDS, XRD, XRF and DTA analyses. In order to evaluate the colour changes due to different melting temperatures and stoichiometric ratios, the colour measurements were taken using CIExy 1931 and CIE 1976Lab coordinates.

2008-05-31T22:00:00Z