ИСТИНА

The aim of the present study is to analyze the surface composition and thermodynamics of the single phase solid solution of Cu in Ag. The surface tension of solid Ag–xCu alloys, where x varies from 0.41 to 7.95 at. %, was measured by zero-creep method. Growth of the surface tension with Cu content was detected. XPS studies revealed the depletion of the surface with copper relative to the bulk composition: 1.5 at. % of Cu was detected on the surface of Ag–2.2at.%Cu solid solution. At the same time the formation of copper-rich nanoparticles was detected by SEM on the surface of Ag–7.95at.%Cu solid solution. Wettability of pure Ag and Ag-Cu solid solution by Cu-Ag melt is analyzed