Abstract
The surface tensions of liquid Fe-Y and Fe-C-Y alloys containing 0 to 2 wt pct C and up to 0.8 wt pct Y were measured at 1550°C with a sessile drop technique. Yttrium was found to be surface active in both Fe-Y and Fe-C-Y alloys in the composition ranges studied. The addition of carbon reduces the surface tension of Fe-Y alloys.
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