Abstract
The surface tension and density of Co-Sn and Co-Sb melts with introduced Al2O3 nanoparticles (dmid = 41 nm) were studied by the large drop method. A related change in the structural properties of the metal, in particular the inversion of the surface tension temperature coefficient, has been revealed. The influence of Co+ (Al2O3-Sn/Sb) ensembles formed on the density of melts is considered in the framework of the metallic melts quasi-chemical theory. So, if for the Co-Sn-Al2O3 system, looseness, as a rule, decreases, then in the Co-Sb-Al2O3 system, on the contrary, it increases. This indicates a different influence of the ensembles Co+(Al2O3-Sn) and Co+ (Al2O3-Sb) on the change in the cluster structure of the melt and its surface properties.
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