Homogeneity study of modern bronzes for artistic castings using PIXE and PLP (CROSBI ID 540595)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Šatović, Domagoj ; Desnica, Vladan ; Valek, Lidija ; Martinez, Sanja ; Fazinić, Stjepko ; Pastuović, Željko
engleski
Homogeneity study of modern bronzes for artistic castings using PIXE and PLP
Metal casting is the most efficient way of shaping metals both for industrial purposes, as well as in art modeling. However, when casting an art model in metal, focus is on shape and form, and quality of a cast is often neglected. Therefore, artistic casts may vary in composition and structure, and often exhibit poor homogeneity. Inhomogeneity in composition decreases mechanical properties of a cast alloy, and also has a negative affect on corrosion resistance of alloy due to formation of anodic and cathodic places. These can lead to very dangerous local (galvanic) corrosion. Modern bronzes, cast in typical art foundries today, often show a high degree of inhomogeneity and various compositions due to many different casting methods in use and because of, often very unrefined temperature control systems, in processes of melting and solidification. In this work, we have studied several specimens of cast statuary bronzes and compared the results with the results obtained from the industrial standard bronze cast. In order to examine distribution of Sn as a major alloying element and Zn, Pb and Fe as trace elements larger area line scans were performed using PIXE (proton induced X-ray emission). Furthermore, the PIXE elemental maps allowed calculation of the homogeneity factor. The areas which have showed large scale inhomogeneities were subsequently examined by the means of electrochemical measurements, which were able to confirmed higher potential appearance of galvanic corrosion for those regions.
bronze; corrosion; homogeneity; PIXE; linear polarization
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Podaci o prilogu
124-124.
2008.
objavljeno
Podaci o matičnoj publikaciji
Book of Abstracts, EXRS-2008 European Conference on X-Ray Spectrometry
Fazinić, Stjepko ; Jakšić, Milko
Zagreb: Institut Ruđer Bošković
978-953-6690-73-2
Podaci o skupu
European Conference on X-Ray Spectrometry
poster
16.06.2008-20.06.2008
Dubrovnik, Hrvatska; Cavtat, Hrvatska