Charakterizace fázového rozhraní kovová tavenina/žáruvzdorný materiál prostřednictvím smáčivosti za vysokých teplot

Abstract

The thesis deals with the determination of surface properties, such as surface tension and wetting angles, of low alloy steels by means of the sessile drop method performed on a refractory corundum substrate. For this purpose, a CLASIC observational high-temperature furnace was used. Specifically, three steel series differing in chromium, nickel, and carbon content were analyzed. It was found that the elemental content affected the surface tension, wetting angles, and their temperature dependence. Furthermore, the interaction of the low-alloy steels with the corundum substrate was investigated by scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), and X-ray diffraction analysis (RDX). In this regard, it was found that the interaction is mainly influenced by carbon, the presence of which is related to the formation of new crystalline phases.