The activity coefficients of the nuclei components of the chemical reactions products in steelmaking processes

The chemical potentials of the nanoparticle components differ from the chemical potentials of the macro body components. Previously, the authors obtained a formula for its calculating based on the corresponding values in the bulk phases. The additional pressure in the nanophases and the dependence of the surface tension of the nanoparticle on its size were taken into account. This paper presents the results of research, based on the developed theory, on some aspects of the growth of non-metallic inclusions nuclei in steelmaking processes. It is shown that the surface effects play a fundamental role for particles smaller than100 nm. The activity coefficients of the components of such particles can range from 0.001 to 600. A method for calculating them for growing nuclei of chemical reaction products in steel making process is proposed.