The sculptures Pappagallo and Ranocchia present some conservation problems due to the presence of oxidation products on the surface which have modified the optical characteristics of the artworks. The deterioration of the constituent materials is an integral part of the creative process of the artist. With the aim of preserving the metal support of the sculptures, and because the artworks present the suitable physical-chemical characteristics, it was decided to start a research relating to cathodic protection, with particular attention to active protection through the use of sacrificial anodes. With this technique, which consists in reducing the speed of corrosion, the use of protective coatings - which can alter the aesthetic properties of the works - could be avoided. In order to evaluate the applicability of this protective technique, two experiments were conducted: one to identify the suitable type of anode based on the exhibition environment and one to determine a correct electrical connection method between the anodes and the artworks.
