溶融 Fe-C-Si 合金の表面張力

概要

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The surface tension of liquid iron, iron-carbon, iron-silicon and iron-carbon-silicon alloys was measured by sessile drop method. The surface tension and the density of pure liquid iron at 1550℃ were 1735dyne/cm and 7.05g/cm^3, respectively. The surface tension of iron-carbon alloys decreased linearly with temperature and the carbon content, and the temperature coefficient decreased with increase of carbon content. The surface tension and the density of iron-silicon alloys decreased with increase of silicon content, but abnormal phenomena were found at 50 at % Si, that is, the temperature coefficients of surface tension and density were positive. The surface tension of iron containing carbon reached a maximum value when some amounts of silicon was added, although individual addition of carbon or silicon decreased the surface tansion of iron.
社団法人日本鉄鋼協会の論文
1974-01-01