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Thermodynamics of nitrogen in CaO‐TiO 2 ‐TiO 1.5 slags
Author(s) -
Tanabe Jun,
Suito Hideaki
Publication year - 1992
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199201752
Subject(s) - tin , crucible (geodemography) , slag (welding) , nitrogen , solubility , partial pressure , nitride , metal , saturation (graph theory) , atmospheric temperature range , metallurgy , analytical chemistry (journal) , materials science , oxygen , titanium nitride , chemistry , inorganic chemistry , thermodynamics , environmental chemistry , layer (electronics) , computational chemistry , mathematics , combinatorics , composite material , physics , organic chemistry
The nitride capacities in CaO‐TiO 2 ‐TiO 1.5 slags, and nitrogen distribution ratio between these slags and liquid Cu ( L N = (mass‐% N)/[mass‐% N]) were measured by a gas‐slag‐metal equilibration technique, using a Mo crucible in the temperature range of 1823 to 1923 K under controlled partial pressures of oxygen and nitrogen . The values for , (mass‐% Ti 3+ )/(mass‐% Ti 4+ ) ratio, and solubility of TiN in CaO‐TiO 2 ‐TiO 1.5 slags were obtained as a function of slag composition ( X CaO = 0.24 ∼ 0.39) and temperature. Activity coefficients of TiN were evaluated from the values for activity coefficients of Ti in liquid Cu which were calculated from the results of TiN saturation experiments.