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| ACTIVITY OF La_2O_3 IN LIQUID La_2O_3-Al_2O_3-CaF_2 SLAGS |
| WANG Changzhen; YE Shuqing; YU Dingyu; GUO Wenquan(Northeast University of Technology; Shenyang)(Manuscript 1 August; 1983; revised manuscript 20 December; 1983) |
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Cite this article:
WANG Changzhen; YE Shuqing; YU Dingyu; GUO Wenquan(Northeast University of Technology; Shenyang)(Manuscript 1 August; 1983; revised manuscript 20 December; 1983). ACTIVITY OF La_2O_3 IN LIQUID La_2O_3-Al_2O_3-CaF_2 SLAGS. Acta Metall Sin, 1984, 20(5): 357-364.
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Abstract The activity of La_2O_3 in liquid slags of various composition of La_2O_3-Al_2O_3-CaF_2 ternary system has been determined by equilibrating the slag with liquid Sn in a graphite crucible under one atmosphere of CO at 1600℃ in Mo-wire furnace. The iso-activity diagram and the liquid boundary for La_2O_3 at 1600℃ were ascertained. It was resulted that the activity of La_2O_3 increases with the increase of CaF_2 concentration or with the decrease of Al_2O_3 concentration when the La_2O_3 concentration remained constant; and with the increase of La_2O_3 concentration when the concentration of OaF_2 and Al_2O_3 remained constant.
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Received: 18 May 1984
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