| Popis: |
The authors are members of an inter-disciplinary investigation team working in the field of Cultural Heritage Conservation. The aim of this project is the comparative study of grounds of works in the Prado National Museum by Rubens, during his time in Spain and at Ambers (Belgium), due to the peculiar characteristics of the materials used in the coloured grounds -which are of a complex and varied nature- and specifically the peculiarities that they present in Rubens’ canvases, require a detailed nanostructural characterization by means of high-resolution transmission electron microscopy (HRTEM), by using a 300 FEG JEOL electron microscope and an Energy Dispersive Xray Spectroscopy (EDS) microanalysis, in order to determine the nanostructure and chemical composition of the particles forming the pictorial materials [1]. The final properties of crystallized materials depend on different structural and chemical aspects. Furthermore, the presence of defects, crystal size, chemical composition, stechiometry, cationic substitutions and impurities, all lead to chemical and physical property changes. The data thus gathered will serve to compare the materials used with one another and with others of the author’s works, also located at “El Prado” National Museum, regarding which there are reasonable doubts as to whether they were executed in Spain during his second visit (1628–29). |
