溶融鉄合金と CaO-Al_2O_3 スラグとの間の界面張力の測定について

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An improved method for measurement of interfacial tension between liquid iron alloy and liquid slag has been developed. The method is based on simultaneous determination both surface tension of liquid iron alloy σ_<mg>, which is measured by use of large drop method, and contact angle of liquid slag droplet on the liquid iron alloy. The interfacial tension 'σ_<ms°>' between CaO-Al_2O_3 slag and liquid iron alloy was determined at 1570℃ by the method within 0.5 second after contacting the two liquids. Results obtained are as follows : (1) Oxygen dissolved in liquid iron brings about drastic decrement of σ_<ms°>, while both carbon and chromium in liquid iron lowers slightly σ_<ms°>. (2) Both decrement of σ_<ms°> and that of σ_<mg> by addition of one of the elements mentioned above into liquid iron are nearly equal to one another, and also both decrement of σ_<ms°> and that of surface tension of CaO-Al_2O_3-SiO_2 slag σ_<sg> by addition of SiO_2 component into the slag are nearly equal to one another. (3) Main cause of the interfacial tension character will be induced by independent contributions both of σ_<mg> and σ_<sg> respectively, while interaction between the slag and the iron alloy may play a minor role in the interfacial tension character. (4) Work of adhesion W_a between the slag and the iron alloy within 0.5 second after contacting the two liquids keeps constant value even when only one of the two liquids makes change in composition.
社団法人日本鉄鋼協会の論文
1973-01-01

溶融鉄合金と CaO-Al_2O_3 スラグとの間の界面張力の測定について

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