CaF_2-CaO-SiO_2 系融体の密度と表面張力

概要

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Densities and surface tensions of CaF_2-CaO-SiO_2 melts were measured by the Archimedean method and the maximum bubble pressure method, respectively. From the measured densities, the molar volume was computed for the following binary systems ; CaF_2-CaO, CaF_2-3CaO・SiO_2, CaF_2-2CaO・SiO_2, and CaF_2-3CaO・SiO_2. For the systems, the molar volume obeyed the simple additive law on volume and it suggests that calcium fluoride in the melts behaves as a diluent. On the other hand, the surface tension for the binary systems changed approximately in accordance with the Guggenheim's equation for the regular solution. From the results, the iso-density curves and the iso-surface tension curves were proposed for the CaF_2-CaO-SiO_2 ternary melts having the ratio, CaO/SiO_2>1.5 at 1550℃.
社団法人日本鉄鋼協会の論文
1989-03-01