title: Surface tension and density of Si-Ge melts.
abstract: In this work, the surface tension and density of Si-Ge liquid alloys were determined by the pendant drop method. Over the range of measurements, both properties show a linear temperature dependence and a nonlinear concentration dependence. Indeed, the density decreases with increasing silicon content exhibiting positive deviation from ideality, while the surface tension increases and deviates negatively with respect to the ideal solution model. Taking into account the Si-Ge phase diagram, a simple lens type, the surface tension behavior of the Si-Ge liquid alloys was analyzed in the framework of the Quasi-Chemical Approximation for the Regular Solutions model. The new experimental results were compared with a few data available in the literature, obtained by the containerless method.
authors.affiliation: Consiglio Nazionale delle Ricerche-Istituto per l'Energetica e le Interfasi, Via de Marini 6, Genoa, Italy.
authors.forename: Enrica
authors.initials: E
authors.lastname: Ricci
authors.affiliation: Consiglio Nazionale delle Ricerche-Istituto per l'Energetica e le Interfasi, Via de Marini 6, Genoa, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Amore
authors.affiliation: Consiglio Nazionale delle Ricerche-Istituto per l'Energetica e le Interfasi, Via de Marini 6, Genoa, Italy.
authors.forename: Donatella
authors.initials: D
authors.lastname: Giuranno
authors.affiliation: Consiglio Nazionale delle Ricerche-Istituto per l'Energetica e le Interfasi, Via de Marini 6, Genoa, Italy.
authors.forename: Rada
authors.initials: R
authors.lastname: Novakovic
authors.affiliation: Corso Promessi Sposi, 29 Lecco, Italy.
authors.forename: Ausonio
authors.initials: A
authors.lastname: Tuissi
authors.affiliation: Foundry Research Institute (CHTS), 73 Zakopianska Street, 30-418 Krakow, Poland.
authors.forename: Natalia
authors.initials: N
authors.lastname: Sobczak
authors.affiliation: Foundry Research Institute (CHTS), 73 Zakopianska Street, 30-418 Krakow, Poland.
authors.forename: Rafal
authors.initials: R
authors.lastname: Nowak
authors.affiliation: Foundry Research Institute (CHTS), 73 Zakopianska Street, 30-418 Krakow, Poland.
authors.forename: Bartłomiej
authors.initials: B
authors.lastname: Korpala
authors.affiliation: Foundry Research Institute (CHTS), 73 Zakopianska Street, 30-418 Krakow, Poland.
authors.forename: Grzegorz
authors.initials: G
authors.lastname: Bruzda