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chun tie ye zhong y o y s ping heng
Author(s): Xiang Changxiang Yang si fu Han Qiyong
Pages: 78-
86
Year: 1987
Issue:
2
Journal: Journal of University of Science and Technology Beijing
Keyword: Iron liquid; yttrium; oxygen; sulphur; equilibrium constant; activity coefficient; free energy;
Abstract: The dissolved rare earth content in iron was determined by means of electrolysis of the sample in the organic electrolyte at low temPera-ture and radioassay technique. The oxygen activity in the molten iron was measured by solid electrolyte sensors made of ZrO2 ( MgO ) tube. The dissolved sulphur content was determined by aid of H2S evolution method. The relationship between the Y-O equilibrium constant in molten iron and temPerature at 1560-1600℃ and the Y-S equilibrium constant in molten iron at 1600℃ were determined. The interaction coefficients of eOY, eSY and other thermodynamic data were also determin-ed.
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