The presented paper is focused on the experimental study of the surface properties of selected commercial steels (three alloys based on Fe – C – Cr). The surface tension of given steels and their wetting with alumina substrate in the temperature interval from the melting point to the temperature of 1600 °C were determined using the sessile drop technique. The effect of the temperature and the chemical composition on the surface properties of the steels was studied. For an assessment of the influence of the major elements (carbon and chromium), the steels with different carbon and chromium contents, which varied in the range of 0.077 – 0.381 wt. % and 0.049 – 4.990 wt. %, respectively, were chosen. It was shown that higher content of both abovementioned components increased the surface tension of the investigated steels and their contact angle with alumina substrate. The interaction of the steel samples with the alumina substrate was studied using SEM, EDX and XRD methods.Keywords: Sessile drop method, surface tension, wetting angle, interaction, steels
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