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Effect of sulfur on supersaturation in aluminum deoxidized liquid iron
Author(s) -
Tanabe Jun,
Suito Hideaki
Publication year - 1995
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199501103
Subject(s) - supersaturation , crucible (geodemography) , sulfur , chemistry , lime , aluminium , precipitation , oxygen , inorganic chemistry , metallurgy , materials science , computational chemistry , physics , organic chemistry , meteorology
The effect of sulfur addition on supersaturation observed in aluminum deoxidized liquid iron was studied at 1873 K, by using CaO‐Al 2 O 3 slags in an alumina or lime crucible. The contents of supersaturated oxygen for a given aluminum level were not influenced by the addition of sulfur (mass contents of 1×10 −5 ∼ 0.42%) in the experiments where the sample was rapidly quenched. However, in the experiments in which the sample was cooled from 1873 to 1723 K at a cooling rate of 2.7 K/min, the effect of sulfur on supersaturation was observed for mass contents of more than 0.01% sulfur. The critical supersaturation for alumina precipitation was discussed based on the variation of the interfacial energy between liquid iron and alumina.